http://www.opencircuits.com/api.php?action=feedcontributions&user=69.169.172.71&feedformat=atomOpenCircuits - User contributions [en]2024-03-29T08:49:15ZUser contributionsMediaWiki 1.34.2http://www.opencircuits.com/index.php?title=Projects&diff=2029Projects2006-07-20T18:37:35Z<p>69.169.172.71: </p>
<hr />
<div>=== [[Programmable Chip EEG]] ===<br />
The Programmable Chip EEG is a Multi-channel electroencephalograph that could be a brain-computer interface.<br />
<br />
=== [[Open Mobile Gadgets]] ===<br />
An open source, open hardware mobile phone in its preliminary development.<br />
<br />
=== [[Music Player]]s including MP3 players ===<br />
<br />
[[TRAXMOD]] Open source MOD music player for dsPIC/ARM microcontrollers.<br />
<br />
=== [[PG31 GPS RS232 Dev Board]] ===<br />
A simple RS232 example project that takes 3.3V TTL serial and outputs to a super-common RS232 connection. Insto-NMEA!<br />
<br />
=== [[PG31 GPS USB Dev Board]] ===<br />
A great example project using the CP2102 USB to TTL UART IC as well as some basic battery holder info.<br />
<br />
=== [[Chalk Roach]] ===<br />
Ultra simple microcontroller development board for Atmel ATmega32 = 16MHz, 2KB SRAM, 16KB Flash<br />
<br />
=== LED displays ===<br />
<br />
* [[24" Wall Clock]] A really big wall clock. Why? Well, cause it might look cool? Probably not. But we do use GPS to get the time! Groovy.<br />
<br />
* [[POV display]] that spins around, giving the illusion of a large display. ([[User:DavidCary|DavidCary]])<br />
<br />
=== [[Cellular Rotary Phone]] ===<br />
An indepth breakdown of the Port-O-Rotary. Some clues to help you avoid audio problems with the GM862.<br />
<br />
=== [[Das Brewmeister!]] ===<br />
An attempt to wirelessly monitor temperatures of fermentation vessels<br />
<br />
=== [[Fermenter Controller]] ===<br />
A web available fermenter vessel controller. Uses PICs, i2c, Rs232 and python.<br />
<br />
=== [[Home controller]] ===<br />
Program your appliances to operate automatically in conjunction with your weekly and daily schedule, manually turn them on/off from your PC or use the controller as a process ON/OFF controller to regulate some kind of physical variable to the desired value.<br />
<br />
=== [[Interactive Lock Box]] ===<br />
An interesting project using an accelerometer and capacitive touch ICs.<br />
<br />
=== [[Motor driver]] (H-bridge) ===<br />
<br />
=== [[Atomic Microscope]] ===<br />
An atomic-resolution microscope.<br />
* STM (scanning tunnelling microscope)<br />
* AFM (atomic force microscope)<br />
<br />
=== [[BlueICE]] ===<br />
A bluetooth JTAG ICE debugger for AVR's!!!<br />
<br />
=== [[Sortof-Networked RFID Reader]] ===<br />
A 125Khz RFID Reader with a simple RS232 based ring network - to allow connection of multiple units to the same control computer.<br />
<br />
''Consider using [http://zytrax.com/tech/layer_1/cables/tech_rs232.htm#rj45 "RS-232D", aka "EIA/TIA-561"]. It has all the same wires and voltages as RS-232, but specifies a RJ45 connector.''<br />
<br />
''Also consider RS-485.''<br />
<br />
(What is the name of the standard for RS-485 on RJ14 ("4 wire RJ-11") or RJ45 ?)<br />
<br />
=== battery charger ===<br />
<br />
See [http://elecdesign.com/Article/ArticleID/1823/1823.html "Build A Smart Battery Charger Using A Single-Transistor Circuit"] by Ejaz ur Rehman.<br />
But be sure to read the "Reader Comments" at the end.<br />
The suggestion to add a zener diode is a good idea.<br />
<br />
<br />
----</div>69.169.172.71http://www.opencircuits.com/index.php?title=Programmable_Chip_EEG&diff=2028Programmable Chip EEG2006-07-20T17:53:58Z<p>69.169.172.71: </p>
<hr />
<div>== The Programmable Chip EEG ==<br />
Welcome to the PCEEG Wiki, where everyone can add to this EEG brain-computer interface!<br />
<br />
== What it is and what it can be used for ==<br />
[http://pceeg.sourceforge.net The Programmable Chip EEG] is a Modular Multi-channel electroencephalograph that could be used for a brain-computer interface, biofeedback.... <br />
<br />
[http://pceeg.sourceforge.net The Programmable Chip EEG] is programmable because it uses [http://opencircuits.com/Programmable_Potentiometers Digitally Programmable Potentiometers]. They are used to set the Gain, frequency range, and can calibrate multiple analog boards for different EEG tests.<br />
<br />
== Status ==<br />
We currently have a (preliminary?) [[circuit design]] and a (prelimary) [[PCB layout]]. Eventually, kits could be sold, if there were interest.<br />
More info is available at the PCEEG SourceForge home page at [http://pceeg.sourceforge.net/ PCEEG sourceforge.net].<br />
<br />
== News == <br />
The design is switching to EAGLE CAD, because the auto-router is excellent for open-source productivity. It will allow the design to evolve faster and with less work with a wider selection of PCB [[production houses to choose from]]. <br />
<br />
Here is a picture of the PCEEG being done in [http://www.cadsoft.de/freeware.htm EagleCAD].<br />
[[Image:Eagle_sample.GIF]]<br />
<br />
The ideas and monkey to robot arm interface by [http://www.answers.com/topic/miguel-nicolelis Miguel Nicolelis]is very inspiring. He used implanted electrodes to monitor and allow monkeys to control a robot arm as if it was their own. Could the PCEEG do the same with its electrodes on the scalp. Only the future will show.<br />
<br />
== Discription of How it Works ==<br />
The differential analog signal is amplified by the instramentation amplifier. Then the signal is amplified and conditioned by high pass and low pass filters.<br />
<br />
The common mode signal is inverted summed and sent back to the body to decrese common mode signal thsi is done by the driver right leg circuit.<br />
<br />
Band reject filters may be added soon in the future.<br />
<br />
Then the analog signals are simultaniously digitized and the digital values can be clocked to the digital board. <br />
<br />
== Parts used in the PCEEG: ==<br />
* [http://opencircuits.com/LT1168 LT1168 Programmable-Gain Precision Instrumentation Amplifier] is used to amplify the weak electric signals coming from the brain through electrodes attached to the scalp, etc.<br />
* Several [http://opencircuits.com/LT1114 LT1114 Low Power Precision OP-Amps] are used for amplification and filtering of the signal<br />
* The [http://opencircuits.com/Digitally_Programmable_Potentiometers Digitally Programmable Potentiometers AD5204] 4-Channel Digitally Controlled Potentiometer is used to make calibration of this device easier. (Historically, a weak point of homebrew designs has been their sensitivity to component value; tolerance and drift have made them require constant tweaking for good results.)<br />
<br />
To reduce noise in the readout of the analog part of this circuit, a common-mode feedback is passed back into the body by the driver right leg circuit. Band reject filter may also be used (to reject, for example, 60Hz noise from nearby A/C power wiring).<br />
<br />
The resulting analog signals will be passed into a digital circuit, based on the Cypress [[PSoC microcontrollers]], which will digitize the signals, further process them, and provide an interface to a computer.<br />
<br />
<br />
== Open Source Circuit Design ==<br />
[http://opencircuits.com/Programmable_Chip_EEG Open Source Circuit Design ]<br />
[http://www.thinkcycle.org/ Think Cycle]<br />
<br />
== Open source (public) results! ==<br />
PHP will be used to create a database of users and what they sample and choose to share with the open source community.<br />
<br />
The database will give statistical analysis on users recordings. <br />
<br />
Also the extension of SETI called BIONIC could be used as a distributed library creation of artifacts and data mining.<br />
<br />
Please contribute and make the PCEEG a great tool for researching brain computer interfaces.</div>69.169.172.71http://www.opencircuits.com/index.php?title=Programmable_Chip_EEG&diff=2027Programmable Chip EEG2006-07-20T17:52:28Z<p>69.169.172.71: </p>
<hr />
<div>== The Programmable Chip EEG ==<br />
Welcome to the PCEEG Wiki, where everyone can add to this EEG brain-computer interface!<br />
<br />
== What it is and what it can be used for ==<br />
[http://pceeg.sourceforge.net The Programmable Chip EEG] is a Modular Multi-channel electroencephalograph that could be used for a brain-computer interface, biofeedback.... <br />
<br />
[http://pceeg.sourceforge.net The Programmable Chip EEG] is programmable because it uses [http://opencircuits.com/Programmable_Potentiometers Digitally Programmable Potentiometers]. They are used to set the Gain, frequency range, and can calibrate multiple analog boards for different EEG tests.<br />
<br />
== Discription of How it Works ==<br />
The differential analog signal is amplified by the instramentation amplifier. Then the signal is amplified and conditioned by high pass and low pass filters.<br />
<br />
The common mode signal is inverted summed and sent back to the body to decrese common mode signal thsi is done by the driver right leg circuit.<br />
<br />
Band reject filters may be added soon in the future.<br />
<br />
Then the analog signals are simultaniously digitized and the digital values can be clocked to the digital board. <br />
<br />
== News == <br />
The design is switching to EAGLE CAD, because the auto-router is excellent for open-source productivity. It will allow the design to evolve faster and with less work with a wider selection of PCB [[production houses to choose from]]. <br />
<br />
Here is a picture of the PCEEG being done in [http://www.cadsoft.de/freeware.htm EagleCAD].<br />
[[Image:Eagle_sample.GIF]]<br />
<br />
The ideas and monkey to robot arm interface by [http://www.answers.com/topic/miguel-nicolelis Miguel Nicolelis]is very inspiring. He used implanted electrodes to monitor and allow monkeys to control a robot arm as if it was their own. Could the PCEEG do the same with its electrodes on the scalp. Only the future will show.<br />
<br />
== Parts used in the PCEEG: ==<br />
* [http://opencircuits.com/LT1168 LT1168 Programmable-Gain Precision Instrumentation Amplifier] is used to amplify the weak electric signals coming from the brain through electrodes attached to the scalp, etc.<br />
* Several [http://opencircuits.com/LT1114 LT1114 Low Power Precision OP-Amps] are used for amplification and filtering of the signal<br />
* The [http://opencircuits.com/Digitally_Programmable_Potentiometers Digitally Programmable Potentiometers AD5204] 4-Channel Digitally Controlled Potentiometer is used to make calibration of this device easier. (Historically, a weak point of homebrew designs has been their sensitivity to component value; tolerance and drift have made them require constant tweaking for good results.)<br />
<br />
To reduce noise in the readout of the analog part of this circuit, a common-mode feedback is passed back into the body by the driver right leg circuit. Band reject filter may also be used (to reject, for example, 60Hz noise from nearby A/C power wiring).<br />
<br />
The resulting analog signals will be passed into a digital circuit, based on the Cypress [[PSoC microcontrollers]], which will digitize the signals, further process them, and provide an interface to a computer.<br />
<br />
<br />
== Open Source Circuit Design ==<br />
[http://opencircuits.com/Programmable_Chip_EEG Open Source Circuit Design ]<br />
[http://www.thinkcycle.org/ Think Cycle]<br />
<br />
== Open source (public) results! ==<br />
PHP will be used to create a database of users and what they sample and choose to share with the open source community.<br />
<br />
The database will give statistical analysis on users recordings. <br />
<br />
Also the extension of SETI called BIONIC could be used as a distributed library creation of artifacts and data mining.<br />
<br />
Please contribute and make the PCEEG a great tool for researching brain computer interfaces.</div>69.169.172.71http://www.opencircuits.com/index.php?title=Programmable_Chip_EEG&diff=2026Programmable Chip EEG2006-07-20T17:50:45Z<p>69.169.172.71: </p>
<hr />
<div>== The Programmable Chip EEG ==<br />
Welcome to the PCEEG Wiki, where everyone can add to this EEG brain-computer interface!<br />
<br />
== What it is and what it can be used for ==<br />
[http://pceeg.sourceforge.net The Programmable Chip EEG] is a Modular Multi-channel electroencephalograph that could be used for a brain-computer interface, biofeedback.... <br />
<br />
[http://pceeg.sourceforge.net The Programmable Chip EEG] is programmable because it uses [http://opencircuits.com/Programmable_Potentiometers Digitally Programmable Potentiometers]. They are used to set the Gain, frequency range, and can calibrate multiple analog boards for different EEG tests.<br />
<br />
== Discription of How it Works ==<br />
The differential analog signal is amplified by the instramentation amplifier. Then the signal is amplified and conditioned by high pass and low pass filters.<br />
<br />
The common mode signal is inverted summed and sent back to the body to decrese common mode signal thsi is done by the driver right leg circuit.<br />
<br />
Band reject filters may be added soon in the future.<br />
<br />
Then the analog signals are simultaniously digitized and the digital values can be clocked to the digital board. <br />
<br />
<br />
== Parts used in the PCEEG: ==<br />
* [http://opencircuits.com/LT1168 LT1168 Programmable-Gain Precision Instrumentation Amplifier] is used to amplify the weak electric signals coming from the brain through electrodes attached to the scalp, etc.<br />
* Several [http://opencircuits.com/LT1114 LT1114 Low Power Precision OP-Amps] are used for amplification and filtering of the signal<br />
* The [http://opencircuits.com/Digitally_Programmable_Potentiometers Digitally Programmable Potentiometers AD5204] 4-Channel Digitally Controlled Potentiometer is used to make calibration of this device easier. (Historically, a weak point of homebrew designs has been their sensitivity to component value; tolerance and drift have made them require constant tweaking for good results.)<br />
<br />
To reduce noise in the readout of the analog part of this circuit, a common-mode feedback is passed back into the body by the driver right leg circuit. Band reject filter may also be used (to reject, for example, 60Hz noise from nearby A/C power wiring).<br />
<br />
The resulting analog signals will be passed into a digital circuit, based on the Cypress [[PSoC microcontrollers]], which will digitize the signals, further process them, and provide an interface to a computer.<br />
<br />
<br />
== Open Source Circuit Design ==<br />
[http://opencircuits.com/Programmable_Chip_EEG Open Source Circuit Design ]<br />
[http://www.thinkcycle.org/ Think Cycle]<br />
<br />
== Open source (public) results! ==<br />
PHP will be used to create a database of users and what they sample and choose to share with the open source community.<br />
<br />
The database will give statistical analysis on users recordings. <br />
<br />
Also the extension of SETI called BIONIC could be used as a distributed library creation of artifacts and data mining.<br />
<br />
Please contribute and make the PCEEG a great tool for researching brain computer interfaces.</div>69.169.172.71http://www.opencircuits.com/index.php?title=Programmable_Chip_EEG&diff=2025Programmable Chip EEG2006-07-20T17:49:50Z<p>69.169.172.71: </p>
<hr />
<div>== The Programmable Chip EEG ==<br />
Welcome to the PCEEG Wiki, where everyone can add to this EEG brain-computer interface!<br />
<br />
== What it is and what it can be used for ==<br />
[http://pceeg.sourceforge.net The Programmable Chip EEG] is a Modular Multi-channel electroencephalograph that could be used for a brain-computer interface, biofeedback.... <br />
<br />
[http://pceeg.sourceforge.net The Programmable Chip EEG] is programmable because it uses [http://opencircuits.com/Programmable_Potentiometers Digitally Programmable Potentiometers]. They are used to set the Gain, frequency range, and can calibrate multiple analog boards for different EEG tests.<br />
<br />
== Discription of How it Works ==<br />
The differential analog signal is amplified by the instramentation amplifier. Then the signal is amplified and conditioned by high pass and low pass filters.<br />
<br />
The common mode signal is inverted summed and sent back to the body to decrese common mode signal thsi is done by the driver right leg circuit.<br />
<br />
Band reject filters may be added soon in the future.<br />
<br />
Then the analog signals are simultaniously digitized and the digital values can be clocked to the digital board. <br />
<br />
<br />
== Parts used in the PCEEG: ==<br />
* [http://opencircuits.com/LT1168 LT1168 Programmable-Gain Precision Instrumentation Amplifier] is used to amplify the weak electric signals coming from the brain through electrodes attached to the scalp, etc.<br />
* Several [http://opencircuits.com/LT1114 LT1114 Low Power Precision OP-Amps] are used for amplification and filtering of the signal<br />
* The [http://opencircuits.com/Digitally_Programmable_Potentiometers Digitally Programmable Potentiometers AD5204] 4-Channel Digitally Controlled Potentiometer is used to make calibration of this device easier. (Historically, a weak point of homebrew designs has been their sensitivity to component value; tolerance and drift have made them require constant tweaking for good results.)<br />
<br />
To reduce noise in the readout of the analog part of this circuit, a common-mode feedback is passed back into the body by the driver right leg circuit. Band reject filter may also be used (to reject, for example, 60Hz noise from nearby A/C power wiring).<br />
<br />
The resulting analog signals will be passed into a digital circuit, based on the Cypress [[PSoC microcontrollers]], which will digitize the signals, further process them, and provide an interface to a computer.</div>69.169.172.71http://www.opencircuits.com/index.php?title=Programmable_Chip_EEG&diff=2024Programmable Chip EEG2006-07-20T17:48:46Z<p>69.169.172.71: </p>
<hr />
<div>== The Programmable Chip EEG ==<br />
Welcome to the PCEEG Wiki, where everyone can add to this EEG brain-computer interface!<br />
<br />
== What it is and what it can be used for ==<br />
[http://pceeg.sourceforge.net The Programmable Chip EEG] is a Modular Multi-channel electroencephalograph that could be used for a brain-computer interface, biofeedback.... <br />
<br />
[http://pceeg.sourceforge.net The Programmable Chip EEG] is programmable because it uses [http://opencircuits.com/Programmable_Potentiometers Digitally Programmable Potentiometers]. They are used to set the Gain, frequency range, and can calibrate multiple analog boards for different EEG tests.<br />
<br />
== Discription of How it Works ==<br />
The differential analog signal is amplified by the instramentation amplifier. Then the signal is amplified and conditioned by high pass and low pass filters.<br />
<br />
The common mode signal is inverted summed and sent back to the body to decrese common mode signal thsi is done by the driver right leg circuit.<br />
<br />
Band reject filters may be added soon in the future.<br />
<br />
Then the analog signals are simultaniously digitized and the digital values can be clocked to the digital board. <br />
<br />
<br />
Parts used in the PCEEG:<br />
* [http://opencircuits.com/LT1168 LT1168 Programmable-Gain Precision Instrumentation Amplifier] is used to amplify the weak electric signals coming from the brain through electrodes attached to the scalp, etc.<br />
* Several [http://opencircuits.com/LT1114 LT1114 Low Power Precision OP-Amps] are used for amplification and filtering of the signal<br />
* The [http://opencircuits.com/Digitally_Programmable_Potentiometers Digitally Programmable Potentiometers AD5204] 4-Channel Digitally Controlled Potentiometer is used to make calibration of this device easier. (Historically, a weak point of homebrew designs has been their sensitivity to component value; tolerance and drift have made them require constant tweaking for good results.)<br />
<br />
To reduce noise in the readout of the analog part of this circuit, a common-mode feedback is passed back into the body by the driver right leg circuit. Band reject filter may also be used (to reject, for example, 60Hz noise from nearby A/C power wiring).<br />
<br />
The resulting analog signals will be passed into a digital circuit, based on the Cypress [[PSoC microcontrollers]], which will digitize the signals, further process them, and provide an interface to a computer.</div>69.169.172.71http://www.opencircuits.com/index.php?title=Programmable_Chip_EEG&diff=2023Programmable Chip EEG2006-07-20T17:47:42Z<p>69.169.172.71: /* The Programmable Chip EEG */</p>
<hr />
<div>== The Programmable Chip EEG ==<br />
Welcome to the PCEEG Wiki, where everyone can add to this EEG brain-computer interface!<br />
<br />
== What it is and what it can be used for ==<br />
[http://pceeg.sourceforge.net The Programmable Chip EEG] is a Modular Multi-channel electroencephalograph that could be used for a brain-computer interface, biofeedback.... <br />
<br />
[http://pceeg.sourceforge.net The Programmable Chip EEG] is programmable because it uses [http://opencircuits.com/Programmable_Potentiometers Digitally Programmable Potentiometers]. They are used to set the Gain, frequency range, and can calibrate multiple analog boards for different EEG tests.<br />
<br />
Parts used in the PCEEG:<br />
* [http://opencircuits.com/LT1168 LT1168 Programmable-Gain Precision Instrumentation Amplifier] is used to amplify the weak electric signals coming from the brain through electrodes attached to the scalp, etc.<br />
* Several [http://opencircuits.com/LT1114 LT1114 Low Power Precision OP-Amps] are used for amplification and filtering of the signal<br />
* The [http://opencircuits.com/Digitally_Programmable_Potentiometers Digitally Programmable Potentiometers AD5204] 4-Channel Digitally Controlled Potentiometer is used to make calibration of this device easier. (Historically, a weak point of homebrew designs has been their sensitivity to component value; tolerance and drift have made them require constant tweaking for good results.)<br />
<br />
To reduce noise in the readout of the analog part of this circuit, a common-mode feedback is passed back into the body by the driver right leg circuit. Band reject filter may also be used (to reject, for example, 60Hz noise from nearby A/C power wiring).<br />
<br />
The resulting analog signals will be passed into a digital circuit, based on the Cypress [[PSoC microcontrollers]], which will digitize the signals, further process them, and provide an interface to a computer.</div>69.169.172.71http://www.opencircuits.com/index.php?title=Programmable_Chip_EEG&diff=2022Programmable Chip EEG2006-07-20T17:45:51Z<p>69.169.172.71: </p>
<hr />
<div>== The Programmable Chip EEG ==<br />
Welcome to the PCEEG Wiki, where everyone can add to this EEG brain-computer interface!<br />
<br />
[http://pceeg.sourceforge.net The Programmable Chip EEG] is a Modular Multi-channel electroencephalograph that could be a brain-computer interface.<br />
<br />
[http://pceeg.sourceforge.net The Programmable Chip EEG] is programmable because it uses [http://opencircuits.com/Programmable_Potentiometers Digitally Programmable Potentiometers]. They are used to set the Gain, frequency range, and can calibrate multiple analog boards for different EEG tests.<br />
<br />
Parts used in the PCEEG:<br />
* [http://opencircuits.com/LT1168 LT1168 Programmable-Gain Precision Instrumentation Amplifier] is used to amplify the weak electric signals coming from the brain through electrodes attached to the scalp, etc.<br />
* Several [http://opencircuits.com/LT1114 LT1114 Low Power Precision OP-Amps] are used for amplification and filtering of the signal<br />
* The [http://opencircuits.com/Digitally_Programmable_Potentiometers Digitally Programmable Potentiometers AD5204] 4-Channel Digitally Controlled Potentiometer is used to make calibration of this device easier. (Historically, a weak point of homebrew designs has been their sensitivity to component value; tolerance and drift have made them require constant tweaking for good results.)<br />
<br />
To reduce noise in the readout of the analog part of this circuit, a common-mode feedback is passed back into the body by the driver right leg circuit. Band reject filter may also be used (to reject, for example, 60Hz noise from nearby A/C power wiring).<br />
<br />
The resulting analog signals will be passed into a digital circuit, based on the Cypress [[PSoC microcontrollers]], which will digitize the signals, further process them, and provide an interface to a computer.</div>69.169.172.71http://www.opencircuits.com/index.php?title=Components&diff=2021Components2006-07-20T17:40:30Z<p>69.169.172.71: </p>
<hr />
<div>__NOTOC__<br />
<br />
[[Digital Potentiometers|digital Potentiometers(AD5204)]]<br />
The digital Potentiometers made by analog devices (AD5204) has 255 positions can be adjusted by the microcomputer that can receive commands from the computer. This is a great way for analog circuitry to have digital control. This is a chip with 4 digitally controlled POTs and the pots can be daisy chained to have multiple chips controled by a single SPI interface.<br />
<br />
=== [[Passives]] ===<br />
Resistors, Capacitors, Inductors, ...<br />
<br />
=== [[Integrated Circuits]] ===<br />
Op Amps, Microcontrollers, Voltage Regulators, Digitally Programmable Potentiometers, ...<br />
<br />
=== [[Transistors, Diodes, etc.]] ===<br />
<br />
=== [[Optoelectronics]] ===<br />
LEDs, photodiodes, optoisolators, ...<br />
<br />
=== [[Crystals and Oscillators]] ===<br />
Crystals, Ceramic Resonators, ...<br />
<br />
=== [[Connectors]] ===<br />
<br />
=== [[Batteries]] ===<br />
<br />
=== [[Enclosures]] ===<br />
<br />
=== [[Sensors]] ===<br />
Accelerometers, Gyroscopes, Temperature Sensors, Pressure Sensors, ...<br />
<br />
=== [[Switches]] ===<br />
<br />
=== [[Modules]] ===<br />
GPS, Mobile Phone, RF Transceiver, Bluetooth Modules, ...<br />
<br />
=== [[Manufacturers]] ===<br />
Links to homepages, phone numbers, contact info, ...<br />
<br />
=== [[Suppliers]] ===<br />
Good places to buy, numbers to call, people to talk to, ...</div>69.169.172.71http://www.opencircuits.com/index.php?title=Integrated_Circuits&diff=2020Integrated Circuits2006-07-20T17:39:51Z<p>69.169.172.71: </p>
<hr />
<div>== Digital Potentiometers ==<br />
[[Digital Potentiometers|Digital Potentiometers(AD5204)]]<br />
The digital Potentiometers made by analog devices (AD5204) has 255 positions can be adjusted by the microcomputer that can receive commands from the computer. This is a great way for analog circuitry to have digital control. This is a chip with 4 digitally controlled POTs and the pots can be daisy chained to have multiple chips controled by a single SPI interface.<br />
<br />
== voltage regulator ==<br />
<br />
[[Image:Main-LT1528.jpg|69px|LT1528]] [[LT1528]] High current, Variable Voltage Regulator<br />
<br />
[[Image:TPS-V-Reg.jpg|69px|TPS V-Reg]] [[TPS V-Regs]] These are 3.3V and 5V LDO, Low-Noise Voltage Regulators. Very small SOT-23 SMD package. 150mA max current. Best used in battery applications.<br />
<br />
[[Image:Main-LM7805.jpg|69px]] [[Basic Voltage Regulators]] Variable voltage regulators, set output regulators, we give you the whole breakdown. Perfect for use with an external wall-wart power supply.<br />
<br />
== microcontroller ==<br />
<br />
[[Image:lpc2103.jpg|69px|LPC2103]] [http://www.k9spud.com/arm/lpc2103/ LPC2103] Low cost 70MHz ARM7TDMI-S FLASH microcontroller from Philips.<br />
<br />
== Op Amps ==<br />
<br />
[[op amp]]s: great for amplifying weak signals from [[sensors]] to a more useful level. Also used in filters, integrators, etc. <br />
<br />
[[LT1168|LT1168 Programmable-Gain Precision Instrumentation Amplifier]] - Low Power, Single Resistor Gain Programmable, Precision Instrumentation Amplifier<br />
<br />
[[LT1114|LT1114 Low Power Precision OP-Amps]] are used for amplification and filtering of the signal<br />
- Dual/Quad Low Power Precision, Picoamp Input Op Amps<br />
<br />
[[Category:Components]]</div>69.169.172.71http://www.opencircuits.com/index.php?title=Integrated_Circuits&diff=2019Integrated Circuits2006-07-20T17:39:20Z<p>69.169.172.71: </p>
<hr />
<div>== Digital Potentiometers ==<br />
[[Digital Potentiometers|digital Potentiometers(AD5204)]]<br />
The digital Potentiometers made by analog devices (AD5204) has 255 positions can be adjusted by the microcomputer that can receive commands from the computer. This is a great way for analog circuitry to have digital control. This is a chip with 4 digitally controlled POTs and the pots can be daisy chained to have multiple chips controled by a single SPI interface.<br />
<br />
== voltage regulator ==<br />
<br />
[[Image:Main-LT1528.jpg|69px|LT1528]] [[LT1528]] High current, Variable Voltage Regulator<br />
<br />
[[Image:TPS-V-Reg.jpg|69px|TPS V-Reg]] [[TPS V-Regs]] These are 3.3V and 5V LDO, Low-Noise Voltage Regulators. Very small SOT-23 SMD package. 150mA max current. Best used in battery applications.<br />
<br />
[[Image:Main-LM7805.jpg|69px]] [[Basic Voltage Regulators]] Variable voltage regulators, set output regulators, we give you the whole breakdown. Perfect for use with an external wall-wart power supply.<br />
<br />
== microcontroller ==<br />
<br />
[[Image:lpc2103.jpg|69px|LPC2103]] [http://www.k9spud.com/arm/lpc2103/ LPC2103] Low cost 70MHz ARM7TDMI-S FLASH microcontroller from Philips.<br />
<br />
== Op Amps ==<br />
<br />
[[op amp]]s: great for amplifying weak signals from [[sensors]] to a more useful level. Also used in filters, integrators, etc. <br />
<br />
[[LT1168|LT1168 Programmable-Gain Precision Instrumentation Amplifier]] - Low Power, Single Resistor Gain Programmable, Precision Instrumentation Amplifier<br />
<br />
[[LT1114|LT1114 Low Power Precision OP-Amps]] are used for amplification and filtering of the signal<br />
- Dual/Quad Low Power Precision, Picoamp Input Op Amps<br />
<br />
[[Category:Components]]</div>69.169.172.71http://www.opencircuits.com/index.php?title=Digital_Potentiometers&diff=2018Digital Potentiometers2006-07-20T17:38:14Z<p>69.169.172.71: </p>
<hr />
<div>The digital Potentiometers made by analog devices (AD5204) has 255 positions can be adjusted by the microcomputer that can receive commands from the computer. This is a great way for analog circuitry to have digital control. This is a chip with 4 digitally controlled POTs and the pots can be daisy chained to have multiple chips controled by a single SPI interface.<br />
<br />
Digikey Part Number: AD5204BN10-ND<br />
<br />
<br />
AD5204 - 4-Channel, 256-Position Digital Potentiometer<br />
<br />
http://www.analog.com/images/Product_Descriptions/40826AD5204_S.jpg<br />
<br />
Datasheet: http://www.analog.com/UploadedFiles/Data_Sheets/140808745AD5204_6_0.pdf<br />
<br />
Availability:<br />
* Free samples: http://www.analog.com/en/prod/0,,761_797_AD5204,00.html#price<br />
* Digikey: http://www.digikey.com/scripts/DkSearch/dksus.dll?Detail?Ref=1480&Row=284443&Site=US (10k version - $5.02)<br />
<br />
Eagle footprint data:<br />
[[Image:AD5204a.png]]<br />
<br />
[[Media:AD5204.zip|Eagle library (footprint, schematic symbol)]]</div>69.169.172.71http://www.opencircuits.com/index.php?title=Integrated_Circuits&diff=2017Integrated Circuits2006-07-20T17:38:01Z<p>69.169.172.71: </p>
<hr />
<div>== Digital Potentiometers ==<br />
[[digital Potentiometers|digital Potentiometers(AD5204)]]<br />
The digital Potentiometers made by analog devices (AD5204) has 255 positions can be adjusted by the microcomputer that can receive commands from the computer. This is a great way for analog circuitry to have digital control. This is a chip with 4 digitally controlled POTs and the pots can be daisy chained to have multiple chips controled by a single SPI interface.<br />
<br />
== voltage regulator ==<br />
<br />
[[Image:Main-LT1528.jpg|69px|LT1528]] [[LT1528]] High current, Variable Voltage Regulator<br />
<br />
[[Image:TPS-V-Reg.jpg|69px|TPS V-Reg]] [[TPS V-Regs]] These are 3.3V and 5V LDO, Low-Noise Voltage Regulators. Very small SOT-23 SMD package. 150mA max current. Best used in battery applications.<br />
<br />
[[Image:Main-LM7805.jpg|69px]] [[Basic Voltage Regulators]] Variable voltage regulators, set output regulators, we give you the whole breakdown. Perfect for use with an external wall-wart power supply.<br />
<br />
== microcontroller ==<br />
<br />
[[Image:lpc2103.jpg|69px|LPC2103]] [http://www.k9spud.com/arm/lpc2103/ LPC2103] Low cost 70MHz ARM7TDMI-S FLASH microcontroller from Philips.<br />
<br />
== Op Amps ==<br />
<br />
[[op amp]]s: great for amplifying weak signals from [[sensors]] to a more useful level. Also used in filters, integrators, etc. <br />
<br />
[[LT1168|LT1168 Programmable-Gain Precision Instrumentation Amplifier]] - Low Power, Single Resistor Gain Programmable, Precision Instrumentation Amplifier<br />
<br />
[[LT1114|LT1114 Low Power Precision OP-Amps]] are used for amplification and filtering of the signal<br />
- Dual/Quad Low Power Precision, Picoamp Input Op Amps<br />
<br />
[[Category:Components]]</div>69.169.172.71http://www.opencircuits.com/index.php?title=Integrated_Circuits&diff=2016Integrated Circuits2006-07-20T17:22:23Z<p>69.169.172.71: </p>
<hr />
<div>== Digital Potentiometers ==<br />
<br />
The digital Potentiometers made by analog devices (AD5204) has 255 positions can be adjusted by the microcomputer that can receive commands from the computer. This is a great way for analog circuitry to have digital control. This is a chip with 4 digitally controlled POTs and the pots can be daisy chained to have multiple chips controled by a single SPI interface.<br />
<br />
Digikey Part Number: AD5204BN10-ND<br />
<br />
<br />
AD5204 - 4-Channel, 256-Position Digital Potentiometer<br />
<br />
http://www.analog.com/images/Product_Descriptions/40826AD5204_S.jpg<br />
<br />
Datasheet: http://www.analog.com/UploadedFiles/Data_Sheets/140808745AD5204_6_0.pdf<br />
<br />
Availability:<br />
* Free samples: http://www.analog.com/en/prod/0,,761_797_AD5204,00.html#price<br />
* Digikey: http://www.digikey.com/scripts/DkSearch/dksus.dll?Detail?Ref=1480&Row=284443&Site=US (10k version - $5.02)<br />
<br />
Eagle footprint data:<br />
[[Image:AD5204a.png]]<br />
<br />
[[Media:AD5204.zip|Eagle library (footprint, schematic symbol)]]<br />
<br />
== voltage regulator ==<br />
<br />
[[Image:Main-LT1528.jpg|69px|LT1528]] [[LT1528]] High current, Variable Voltage Regulator<br />
<br />
[[Image:TPS-V-Reg.jpg|69px|TPS V-Reg]] [[TPS V-Regs]] These are 3.3V and 5V LDO, Low-Noise Voltage Regulators. Very small SOT-23 SMD package. 150mA max current. Best used in battery applications.<br />
<br />
[[Image:Main-LM7805.jpg|69px]] [[Basic Voltage Regulators]] Variable voltage regulators, set output regulators, we give you the whole breakdown. Perfect for use with an external wall-wart power supply.<br />
<br />
== microcontroller ==<br />
<br />
[[Image:lpc2103.jpg|69px|LPC2103]] [http://www.k9spud.com/arm/lpc2103/ LPC2103] Low cost 70MHz ARM7TDMI-S FLASH microcontroller from Philips.<br />
<br />
== Op Amps ==<br />
<br />
[[op amp]]s: great for amplifying weak signals from [[sensors]] to a more useful level. Also used in filters, integrators, etc. <br />
<br />
[[LT1168|LT1168 Programmable-Gain Precision Instrumentation Amplifier]] - Low Power, Single Resistor Gain Programmable, Precision Instrumentation Amplifier<br />
<br />
[[LT1114|LT1114 Low Power Precision OP-Amps]] are used for amplification and filtering of the signal<br />
- Dual/Quad Low Power Precision, Picoamp Input Op Amps<br />
<br />
[[Category:Components]]</div>69.169.172.71http://www.opencircuits.com/index.php?title=Integrated_Circuits&diff=2015Integrated Circuits2006-07-20T17:21:17Z<p>69.169.172.71: </p>
<hr />
<div>The digital Potentiometers made by analog devices (AD5204) has 255 positions can be adjusted by the microcomputer that can receive commands from the computer. This is a great way for analog circuitry to have digital control. This is a chip with 4 digitally controlled POTs and the pots can be daisy chained to have multiple chips controled by a single SPI interface.<br />
<br />
Digikey Part Number: AD5204BN10-ND<br />
<br />
<br />
AD5204 - 4-Channel, 256-Position Digital Potentiometer<br />
<br />
http://www.analog.com/images/Product_Descriptions/40826AD5204_S.jpg<br />
<br />
Datasheet: http://www.analog.com/UploadedFiles/Data_Sheets/140808745AD5204_6_0.pdf<br />
<br />
Availability:<br />
* Free samples: http://www.analog.com/en/prod/0,,761_797_AD5204,00.html#price<br />
* Digikey: http://www.digikey.com/scripts/DkSearch/dksus.dll?Detail?Ref=1480&Row=284443&Site=US (10k version - $5.02)<br />
<br />
Eagle footprint data:<br />
[[Image:AD5204a.png]]<br />
<br />
[[Media:AD5204.zip|Eagle library (footprint, schematic symbol)]]<br />
<br />
== voltage regulator ==<br />
<br />
[[Image:Main-LT1528.jpg|69px|LT1528]] [[LT1528]] High current, Variable Voltage Regulator<br />
<br />
[[Image:TPS-V-Reg.jpg|69px|TPS V-Reg]] [[TPS V-Regs]] These are 3.3V and 5V LDO, Low-Noise Voltage Regulators. Very small SOT-23 SMD package. 150mA max current. Best used in battery applications.<br />
<br />
[[Image:Main-LM7805.jpg|69px]] [[Basic Voltage Regulators]] Variable voltage regulators, set output regulators, we give you the whole breakdown. Perfect for use with an external wall-wart power supply.<br />
<br />
== microcontroller ==<br />
<br />
[[Image:lpc2103.jpg|69px|LPC2103]] [http://www.k9spud.com/arm/lpc2103/ LPC2103] Low cost 70MHz ARM7TDMI-S FLASH microcontroller from Philips.<br />
<br />
== Op Amps ==<br />
<br />
[[op amp]]s: great for amplifying weak signals from [[sensors]] to a more useful level. Also used in filters, integrators, etc. <br />
<br />
[[LT1168|LT1168 Programmable-Gain Precision Instrumentation Amplifier]] - Low Power, Single Resistor Gain Programmable, Precision Instrumentation Amplifier<br />
<br />
[[LT1114|LT1114 Low Power Precision OP-Amps]] are used for amplification and filtering of the signal<br />
- Dual/Quad Low Power Precision, Picoamp Input Op Amps<br />
<br />
[[Category:Components]]</div>69.169.172.71http://www.opencircuits.com/index.php?title=Programmable_Chip_EEG&diff=2014Programmable Chip EEG2006-07-20T17:19:42Z<p>69.169.172.71: </p>
<hr />
<div>[http://pceeg.sourceforge.net The Programmable Chip EEG] is a Modular Multi-channel electroencephalograph that could be a brain-computer interface.<br />
<br />
[http://pceeg.sourceforge.net The Programmable Chip EEG] is programmable because it uses [http://opencircuits.com/Programmable_Potentiometers Digitally Programmable Potentiometers]. They are used to set the Gain, frequency range, and can calibrate multiple analog boards for different EEG tests.<br />
<br />
Parts used in the PCEEG:<br />
* [http://opencircuits.com/LT1168 LT1168 Programmable-Gain Precision Instrumentation Amplifier] is used to amplify the weak electric signals coming from the brain through electrodes attached to the scalp, etc.<br />
* Several [http://opencircuits.com/LT1114 LT1114 Low Power Precision OP-Amps] are used for amplification and filtering of the signal<br />
* The [http://opencircuits.com/Digitally_Programmable_Potentiometers Digitally Programmable Potentiometers AD5204] 4-Channel Digitally Controlled Potentiometer is used to make calibration of this device easier. (Historically, a weak point of homebrew designs has been their sensitivity to component value; tolerance and drift have made them require constant tweaking for good results.)<br />
<br />
To reduce noise in the readout of the analog part of this circuit, a common-mode feedback is passed back into the body by the driver right leg circuit. Band reject filter may also be used (to reject, for example, 60Hz noise from nearby A/C power wiring).<br />
<br />
The resulting analog signals will be passed into a digital circuit, based on the Cypress [[PSoC microcontrollers]], which will digitize the signals, further process them, and provide an interface to a computer.</div>69.169.172.71http://www.opencircuits.com/index.php?title=Programmable_Chip_EEG&diff=2013Programmable Chip EEG2006-07-20T17:18:31Z<p>69.169.172.71: </p>
<hr />
<div>[http://pceeg.sourceforge.net The Programmable Chip EEG] is a dual channel electroencephalograph that could be a brain-computer interface.<br />
<br />
[http://pceeg.sourceforge.net The Programmable Chip EEG] is programmable because it uses [http://opencircuits.com/Programmable_Potentiometers Digitally Programmable Potentiometers]. They are used to set the Gain, frequency range, and can calibrate multiple analog boards for different EEG tests.<br />
<br />
Parts used in the PCEEG:<br />
* [http://opencircuits.com/LT1168 LT1168 Programmable-Gain Precision Instrumentation Amplifier] is used to amplify the weak electric signals coming from the brain through electrodes attached to the scalp, etc.<br />
* Several [http://opencircuits.com/LT1114 LT1114 Low Power Precision OP-Amps] are used for amplification and filtering of the signal<br />
* The [http://opencircuits.com/Digitally_Programmable_Potentiometers Digitally Programmable Potentiometers AD5204] 4-Channel Digitally Controlled Potentiometer is used to make calibration of this device easier. (Historically, a weak point of homebrew designs has been their sensitivity to component value; tolerance and drift have made them require constant tweaking for good results.)<br />
<br />
To reduce noise in the readout of the analog part of this circuit, a common-mode feedback is passed back into the body by the driver right leg circuit. Band reject filter may also be used (to reject, for example, 60Hz noise from nearby A/C power wiring).<br />
<br />
The resulting analog signals will be passed into a digital circuit, based on the Cypress [[PSoC microcontrollers]], which will digitize the signals, further process them, and provide an interface to a computer.</div>69.169.172.71http://www.opencircuits.com/index.php?title=Programmable_Chip_EEG&diff=2012Programmable Chip EEG2006-07-20T17:16:54Z<p>69.169.172.71: </p>
<hr />
<div>[http://pceeg.sourceforge.net The Programmable Chip EEG] is a dual channel electroencephalograph that could be a brain-computer interface.<br />
<br />
[http://pceeg.sourceforge.net The Programmable Chip EEG] is programmable because it uses [http://opencircuits.com/Programmable_Potentiometers Digitally Programmable Potentiometers]. They are used to set the Gain, frequency range, and can calibrate multiple analog boards for different EEG tests.<br />
<br />
Parts used in the PCEEG:<br />
* [http://opencircuits.com/LT1168 LT1168 Programmable-Gain Precision Instrumentation Amplifier] is used to amplify the weak electric signals coming from the brain through electrodes attached to the scalp, etc.<br />
* Several [[LT1114|LT1114 Low Power Precision OP-Amps]] are used for amplification and filtering of the signal<br />
* The [http://opencircuits.com/Digitally_Programmable_Potentiometers Digitally Programmable Potentiometers AD5204] 4-Channel Digitally Controlled Potentiometer is used to make calibration of this device easier. (Historically, a weak point of homebrew designs has been their sensitivity to component value; tolerance and drift have made them require constant tweaking for good results.)<br />
<br />
To reduce noise in the readout of the analog part of this circuit, a common-mode feedback is passed back into the body by the driver right leg circuit. Band reject filter may also be used (to reject, for example, 60Hz noise from nearby A/C power wiring).<br />
<br />
The resulting analog signals will be passed into a digital circuit, based on the Cypress [[PSoC microcontrollers]], which will digitize the signals, further process them, and provide an interface to a computer.</div>69.169.172.71http://www.opencircuits.com/index.php?title=Programmable_Chip_EEG&diff=2011Programmable Chip EEG2006-07-20T17:15:34Z<p>69.169.172.71: </p>
<hr />
<div>[http://pceeg.sourceforge.net The Programmable Chip EEG] is a dual channel electroencephalograph that could be a brain-computer interface.<br />
<br />
[http://pceeg.sourceforge.net The Programmable Chip EEG] is programmable because it uses [http://opencircuits.com/Programmable_Potentiometers Digitally Programmable Potentiometers]. They are used to set the Gain, frequency range, and can calibrate multiple analog boards for different EEG tests.<br />
<br />
Parts used in the PCEEG:<br />
* [[LT1168|LT1168 Programmable-Gain Precision Instrumentation Amplifier]] is used to amplify the weak electric signals coming from the brain through electrodes attached to the scalp, etc.<br />
* Several [[LT1114|LT1114 Low Power Precision OP-Amps]] are used for amplification and filtering of the signal<br />
* The [http://opencircuits.com/Digitally_Programmable_Potentiometers Digitally Programmable Potentiometers AD5204] 4-Channel Digitally Controlled Potentiometer is used to make calibration of this device easier. (Historically, a weak point of homebrew designs has been their sensitivity to component value; tolerance and drift have made them require constant tweaking for good results.)<br />
<br />
To reduce noise in the readout of the analog part of this circuit, a common-mode feedback is passed back into the body by the driver right leg circuit. Band reject filter may also be used (to reject, for example, 60Hz noise from nearby A/C power wiring).<br />
<br />
The resulting analog signals will be passed into a digital circuit, based on the Cypress [[PSoC microcontrollers]], which will digitize the signals, further process them, and provide an interface to a computer.</div>69.169.172.71http://www.opencircuits.com/index.php?title=Programmable_Chip_EEG&diff=2010Programmable Chip EEG2006-07-20T17:14:44Z<p>69.169.172.71: </p>
<hr />
<div>[http://pceeg.sourceforge.net The Programmable Chip EEG] is a dual channel electroencephalograph that could be a brain-computer interface.<br />
<br />
[http://pceeg.sourceforge.net The Programmable Chip EEG] is programmable because it uses [http://opencircuits.com/Programmable_Potentiometers Digitally Programmable Potentiometers]. They are used to set the Gain, frequency range, and can calibrate multiple analog boards for different EEG tests.<br />
<br />
Parts used in the PCEEG:<br />
* [[LT1168|LT1168 Programmable-Gain Precision Instrumentation Amplifier]] is used to amplify the weak electric signals coming from the brain through electrodes attached to the scalp, etc.<br />
* Several [[LT1114|LT1114 Low Power Precision OP-Amps]] are used for amplification and filtering of the signal<br />
* The [http://opencircuits.com/Digitally_Programmable_Potentiometers Digitally Programmable Potentiometers] 4-Channel Digitally Controlled Potentiometer is used to make calibration of this device easier. (Historically, a weak point of homebrew designs has been their sensitivity to component value; tolerance and drift have made them require constant tweaking for good results.)<br />
<br />
To reduce noise in the readout of the analog part of this circuit, a common-mode feedback is passed back into the body by the driver right leg circuit. Band reject filter may also be used (to reject, for example, 60Hz noise from nearby A/C power wiring).<br />
<br />
The resulting analog signals will be passed into a digital circuit, based on the Cypress [[PSoC microcontrollers]], which will digitize the signals, further process them, and provide an interface to a computer.</div>69.169.172.71http://www.opencircuits.com/index.php?title=Programmable_Potentiometers&diff=2009Programmable Potentiometers2006-07-20T07:01:47Z<p>69.169.172.71: </p>
<hr />
<div>This is used in [[http://pceeg.sourceforge.net The Programmable Chip EEG project at sourceforge.net]].<br />
<br />
The digital Potentiometers made by analog devices (AD5204) has 255 positions can be adjusted by the microcomputer that can receive commands from the computer. This is a great way for analog circuitry to have digital control. This is a chip with 4 digitally controlled POTs and the pots can be daisy chained to have multiple chips controled by a single SPI interface.<br />
<br />
Digikey Part Number: AD5204BN10-ND<br />
<br />
<br />
AD5204 - 4-Channel, 256-Position Digital Potentiometer<br />
<br />
http://www.analog.com/images/Product_Descriptions/40826AD5204_S.jpg<br />
<br />
Datasheet: http://www.analog.com/UploadedFiles/Data_Sheets/140808745AD5204_6_0.pdf<br />
<br />
Availability:<br />
* Free samples: http://www.analog.com/en/prod/0,,761_797_AD5204,00.html#price<br />
* Digikey: http://www.digikey.com/scripts/DkSearch/dksus.dll?Detail?Ref=1480&Row=284443&Site=US (10k version - $5.02)<br />
<br />
Eagle footprint data:<br />
[[Image:AD5204a.png]]<br />
<br />
[[Media:AD5204.zip|Eagle library (footprint, schematic symbol)]]</div>69.169.172.71http://www.opencircuits.com/index.php?title=Integrated_Circuits&diff=2008Integrated Circuits2006-07-20T07:00:01Z<p>69.169.172.71: /* Op Amps */</p>
<hr />
<div>The digital Potentiometers made by analog devices (AD5204) has 255 positions can be adjusted by the microcomputer that can receive commands from the computer. This is a great way for analog circuitry to have digital control. This is a chip with 4 digitally controlled POTs and the pots can be daisy chained to have multiple chips controled by a single SPI interface.<br />
<br />
Digikey Part Number: AD5204BN10-ND<br />
<br />
<br />
AD5204 - 4-Channel, 256-Position Digital Potentiometer<br />
<br />
http://www.analog.com/images/Product_Descriptions/40826AD5204_S.jpg<br />
<br />
Datasheet: http://www.analog.com/UploadedFiles/Data_Sheets/140808745AD5204_6_0.pdf<br />
<br />
Availability:<br />
* Free samples: http://www.analog.com/en/prod/0,,761_797_AD5204,00.html#price<br />
* Digikey: http://www.digikey.com/scripts/DkSearch/dksus.dll?Detail?Ref=1480&Row=284443&Site=US (10k version - $5.02)<br />
<br />
Eagle footprint data:<br />
[[Image:AD5204a.png]]<br />
<br />
[[Media:AD5204.zip|Eagle library (footprint, schematic symbol)]]<br />
<br />
== voltage regulator ==<br />
<br />
[[Image:Main-LT1528.jpg|69px|LT1528]] [[LT1528]] High current, Variable Voltage Regulator<br />
<br />
[[Image:TPS-V-Reg.jpg|69px|TPS V-Reg]] [[TPS V-Regs]] These are 3.3V and 5V LDO, Low-Noise Voltage Regulators. Very small SOT-23 SMD package. 150mA max current. Best used in battery applications.<br />
<br />
[[Image:Main-LM7805.jpg|69px]] [[Basic Voltage Regulators]] Variable voltage regulators, set output regulators, we give you the whole breakdown. Perfect for use with an external wall-wart power supply.<br />
<br />
== microcontroller ==<br />
<br />
[[Image:lpc2103.jpg|69px|LPC2103]] [http://www.k9spud.com/arm/lpc2103/ LPC2103] Low cost 70MHz ARM7TDMI-S FLASH microcontroller from Philips.<br />
<br />
== Op Amps ==<br />
<br />
[[op amp]]s: great for amplifying weak signals from [[sensors]] to a more useful level. Also used in filters, integrators, etc. <br />
<br />
[[LT1168|LT1168 Programmable-Gain Precision Instrumentation Amplifier]] - Low Power, Single Resistor Gain Programmable, Precision Instrumentation Amplifier<br />
<br />
is used to amplify the weak electric signals coming from the brain through electrodes attached to the scalp, etc.<br />
<br />
http://www.linear.com/pc/images/products/thumbnails/1870.jpg<br />
<br />
Datasheet: http://www.linear.com/pc/downloadDocument.do?navId=H0,C1,C1154,C1009,C1045,P1870,D1608<br />
<br />
Availability:<br />
* Free samples: http://www.linear.com/samples/orderSamples.do?navId=H0,C1,C1154,C1009,C1045,P1870,D1608<br />
* Digikey: http://www.digikey.com/scripts/DkSearch/dksus.dll?Detail?Ref=1662&Row=452389&Site=US ($8.15 -- Non-stock item!)<br />
<br />
[[Image:LT1168.png]] [[Image:DIL08.png]] [[Image:SOIC8.png]]<br />
<br />
[[Media:LT1168.zip|Eagle library (footprint, schematic symbol)]]<br />
<br />
<br />
[[LT1114|LT1114 Low Power Precision OP-Amps]] are used for amplification and filtering of the signal<br />
- Dual/Quad Low Power Precision, Picoamp Input Op Amps<br />
<br />
http://www.linear.com/pc/images/products/thumbnails/1365.jpg<br />
<br />
Datasheet: http://www.linear.com/pc/downloadDocument.do?navId=H0,C1,C1154,C1009,C1100,P1365,D1714<br />
<br />
Availability:<br />
* Free samples: http://www.linear.com/samples/orderSamples.do?navId=H0,C1,C1154,C1009,C1100,P1365<br />
* Digikey: http://www.digikey.com/scripts/DkSearch/dksus.dll?Detail?Ref=9250&Row=451270&Site=US ($8.80)<br />
<br />
Schematic symbol:[[Image:LT1114.png]]<br />
<br />
Available packages: [[Image:DIL14.png]] [[Image:SO16.png]]<br />
[[Media:LT1114.zip|Eagle library (footprint, schematic symbol)]]<br />
<br />
<br />
[[Category:Components]]</div>69.169.172.71http://www.opencircuits.com/index.php?title=Integrated_Circuits&diff=2007Integrated Circuits2006-07-20T06:58:13Z<p>69.169.172.71: /* Op Amps */</p>
<hr />
<div>The digital Potentiometers made by analog devices (AD5204) has 255 positions can be adjusted by the microcomputer that can receive commands from the computer. This is a great way for analog circuitry to have digital control. This is a chip with 4 digitally controlled POTs and the pots can be daisy chained to have multiple chips controled by a single SPI interface.<br />
<br />
Digikey Part Number: AD5204BN10-ND<br />
<br />
<br />
AD5204 - 4-Channel, 256-Position Digital Potentiometer<br />
<br />
http://www.analog.com/images/Product_Descriptions/40826AD5204_S.jpg<br />
<br />
Datasheet: http://www.analog.com/UploadedFiles/Data_Sheets/140808745AD5204_6_0.pdf<br />
<br />
Availability:<br />
* Free samples: http://www.analog.com/en/prod/0,,761_797_AD5204,00.html#price<br />
* Digikey: http://www.digikey.com/scripts/DkSearch/dksus.dll?Detail?Ref=1480&Row=284443&Site=US (10k version - $5.02)<br />
<br />
Eagle footprint data:<br />
[[Image:AD5204a.png]]<br />
<br />
[[Media:AD5204.zip|Eagle library (footprint, schematic symbol)]]<br />
<br />
== voltage regulator ==<br />
<br />
[[Image:Main-LT1528.jpg|69px|LT1528]] [[LT1528]] High current, Variable Voltage Regulator<br />
<br />
[[Image:TPS-V-Reg.jpg|69px|TPS V-Reg]] [[TPS V-Regs]] These are 3.3V and 5V LDO, Low-Noise Voltage Regulators. Very small SOT-23 SMD package. 150mA max current. Best used in battery applications.<br />
<br />
[[Image:Main-LM7805.jpg|69px]] [[Basic Voltage Regulators]] Variable voltage regulators, set output regulators, we give you the whole breakdown. Perfect for use with an external wall-wart power supply.<br />
<br />
== microcontroller ==<br />
<br />
[[Image:lpc2103.jpg|69px|LPC2103]] [http://www.k9spud.com/arm/lpc2103/ LPC2103] Low cost 70MHz ARM7TDMI-S FLASH microcontroller from Philips.<br />
<br />
== Op Amps ==<br />
<br />
[[op amp]]s: great for amplifying weak signals from [[sensors]] to a more useful level. Also used in filters, integrators, etc. <br />
<br />
LT1168 - Low Power, Single Resistor Gain Programmable, Precision Instrumentation Amplifier<br />
<br />
http://www.linear.com/pc/images/products/thumbnails/1870.jpg<br />
<br />
Datasheet: http://www.linear.com/pc/downloadDocument.do?navId=H0,C1,C1154,C1009,C1045,P1870,D1608<br />
<br />
Availability:<br />
* Free samples: http://www.linear.com/samples/orderSamples.do?navId=H0,C1,C1154,C1009,C1045,P1870,D1608<br />
* Digikey: http://www.digikey.com/scripts/DkSearch/dksus.dll?Detail?Ref=1662&Row=452389&Site=US ($8.15 -- Non-stock item!)<br />
<br />
[[Image:LT1168.png]] [[Image:DIL08.png]] [[Image:SOIC8.png]]<br />
<br />
[[Media:LT1168.zip|Eagle library (footprint, schematic symbol)]]<br />
<br />
<br />
[[LT1114|LT1114 Low Power Precision OP-Amps]] are used for amplification and filtering of the signal<br />
- Dual/Quad Low Power Precision, Picoamp Input Op Amps<br />
<br />
http://www.linear.com/pc/images/products/thumbnails/1365.jpg<br />
<br />
Datasheet: http://www.linear.com/pc/downloadDocument.do?navId=H0,C1,C1154,C1009,C1100,P1365,D1714<br />
<br />
Availability:<br />
* Free samples: http://www.linear.com/samples/orderSamples.do?navId=H0,C1,C1154,C1009,C1100,P1365<br />
* Digikey: http://www.digikey.com/scripts/DkSearch/dksus.dll?Detail?Ref=9250&Row=451270&Site=US ($8.80)<br />
<br />
Schematic symbol:[[Image:LT1114.png]]<br />
<br />
Available packages: [[Image:DIL14.png]] [[Image:SO16.png]]<br />
[[Media:LT1114.zip|Eagle library (footprint, schematic symbol)]]<br />
<br />
<br />
[[Category:Components]]</div>69.169.172.71http://www.opencircuits.com/index.php?title=Integrated_Circuits&diff=2006Integrated Circuits2006-07-20T06:56:29Z<p>69.169.172.71: /* Op Amps */</p>
<hr />
<div>The digital Potentiometers made by analog devices (AD5204) has 255 positions can be adjusted by the microcomputer that can receive commands from the computer. This is a great way for analog circuitry to have digital control. This is a chip with 4 digitally controlled POTs and the pots can be daisy chained to have multiple chips controled by a single SPI interface.<br />
<br />
Digikey Part Number: AD5204BN10-ND<br />
<br />
<br />
AD5204 - 4-Channel, 256-Position Digital Potentiometer<br />
<br />
http://www.analog.com/images/Product_Descriptions/40826AD5204_S.jpg<br />
<br />
Datasheet: http://www.analog.com/UploadedFiles/Data_Sheets/140808745AD5204_6_0.pdf<br />
<br />
Availability:<br />
* Free samples: http://www.analog.com/en/prod/0,,761_797_AD5204,00.html#price<br />
* Digikey: http://www.digikey.com/scripts/DkSearch/dksus.dll?Detail?Ref=1480&Row=284443&Site=US (10k version - $5.02)<br />
<br />
Eagle footprint data:<br />
[[Image:AD5204a.png]]<br />
<br />
[[Media:AD5204.zip|Eagle library (footprint, schematic symbol)]]<br />
<br />
== voltage regulator ==<br />
<br />
[[Image:Main-LT1528.jpg|69px|LT1528]] [[LT1528]] High current, Variable Voltage Regulator<br />
<br />
[[Image:TPS-V-Reg.jpg|69px|TPS V-Reg]] [[TPS V-Regs]] These are 3.3V and 5V LDO, Low-Noise Voltage Regulators. Very small SOT-23 SMD package. 150mA max current. Best used in battery applications.<br />
<br />
[[Image:Main-LM7805.jpg|69px]] [[Basic Voltage Regulators]] Variable voltage regulators, set output regulators, we give you the whole breakdown. Perfect for use with an external wall-wart power supply.<br />
<br />
== microcontroller ==<br />
<br />
[[Image:lpc2103.jpg|69px|LPC2103]] [http://www.k9spud.com/arm/lpc2103/ LPC2103] Low cost 70MHz ARM7TDMI-S FLASH microcontroller from Philips.<br />
<br />
== Op Amps ==<br />
<br />
[[op amp]]s: great for amplifying weak signals from [[sensors]] to a more useful level. Also used in filters, integrators, etc. <br />
<br />
<br />
[[LT1114|LT1114 Low Power Precision OP-Amps]] are used for amplification and filtering of the signal<br />
- Dual/Quad Low Power Precision, Picoamp Input Op Amps<br />
<br />
http://www.linear.com/pc/images/products/thumbnails/1365.jpg<br />
<br />
Datasheet: http://www.linear.com/pc/downloadDocument.do?navId=H0,C1,C1154,C1009,C1100,P1365,D1714<br />
<br />
Availability:<br />
* Free samples: http://www.linear.com/samples/orderSamples.do?navId=H0,C1,C1154,C1009,C1100,P1365<br />
* Digikey: http://www.digikey.com/scripts/DkSearch/dksus.dll?Detail?Ref=9250&Row=451270&Site=US ($8.80)<br />
<br />
Schematic symbol:[[Image:LT1114.png]]<br />
<br />
Available packages: [[Image:DIL14.png]] [[Image:SO16.png]]<br />
[[Media:LT1114.zip|Eagle library (footprint, schematic symbol)]]<br />
<br />
<br />
[[Category:Components]]</div>69.169.172.71http://www.opencircuits.com/index.php?title=Integrated_Circuits&diff=2005Integrated Circuits2006-07-20T06:55:13Z<p>69.169.172.71: /* Op Amps */</p>
<hr />
<div>The digital Potentiometers made by analog devices (AD5204) has 255 positions can be adjusted by the microcomputer that can receive commands from the computer. This is a great way for analog circuitry to have digital control. This is a chip with 4 digitally controlled POTs and the pots can be daisy chained to have multiple chips controled by a single SPI interface.<br />
<br />
Digikey Part Number: AD5204BN10-ND<br />
<br />
<br />
AD5204 - 4-Channel, 256-Position Digital Potentiometer<br />
<br />
http://www.analog.com/images/Product_Descriptions/40826AD5204_S.jpg<br />
<br />
Datasheet: http://www.analog.com/UploadedFiles/Data_Sheets/140808745AD5204_6_0.pdf<br />
<br />
Availability:<br />
* Free samples: http://www.analog.com/en/prod/0,,761_797_AD5204,00.html#price<br />
* Digikey: http://www.digikey.com/scripts/DkSearch/dksus.dll?Detail?Ref=1480&Row=284443&Site=US (10k version - $5.02)<br />
<br />
Eagle footprint data:<br />
[[Image:AD5204a.png]]<br />
<br />
[[Media:AD5204.zip|Eagle library (footprint, schematic symbol)]]<br />
<br />
== voltage regulator ==<br />
<br />
[[Image:Main-LT1528.jpg|69px|LT1528]] [[LT1528]] High current, Variable Voltage Regulator<br />
<br />
[[Image:TPS-V-Reg.jpg|69px|TPS V-Reg]] [[TPS V-Regs]] These are 3.3V and 5V LDO, Low-Noise Voltage Regulators. Very small SOT-23 SMD package. 150mA max current. Best used in battery applications.<br />
<br />
[[Image:Main-LM7805.jpg|69px]] [[Basic Voltage Regulators]] Variable voltage regulators, set output regulators, we give you the whole breakdown. Perfect for use with an external wall-wart power supply.<br />
<br />
== microcontroller ==<br />
<br />
[[Image:lpc2103.jpg|69px|LPC2103]] [http://www.k9spud.com/arm/lpc2103/ LPC2103] Low cost 70MHz ARM7TDMI-S FLASH microcontroller from Philips.<br />
<br />
== Op Amps ==<br />
<br />
[[op amp]]s: great for amplifying weak signals from [[sensors]] to a more useful level. Also used in filters, integrators, etc. <br />
<br />
<br />
LT1114 - Dual/Quad Low Power Precision, Picoamp Input Op Amps<br />
<br />
http://www.linear.com/pc/images/products/thumbnails/1365.jpg<br />
<br />
Datasheet: http://www.linear.com/pc/downloadDocument.do?navId=H0,C1,C1154,C1009,C1100,P1365,D1714<br />
<br />
Availability:<br />
* Free samples: http://www.linear.com/samples/orderSamples.do?navId=H0,C1,C1154,C1009,C1100,P1365<br />
* Digikey: http://www.digikey.com/scripts/DkSearch/dksus.dll?Detail?Ref=9250&Row=451270&Site=US ($8.80)<br />
<br />
Schematic symbol:[[Image:LT1114.png]]<br />
<br />
Available packages: [[Image:DIL14.png]] [[Image:SO16.png]]<br />
[[Media:LT1114.zip|Eagle library (footprint, schematic symbol)]]<br />
<br />
<br />
[[Category:Components]]</div>69.169.172.71http://www.opencircuits.com/index.php?title=Integrated_Circuits&diff=2004Integrated Circuits2006-07-20T06:53:53Z<p>69.169.172.71: /* other */</p>
<hr />
<div>The digital Potentiometers made by analog devices (AD5204) has 255 positions can be adjusted by the microcomputer that can receive commands from the computer. This is a great way for analog circuitry to have digital control. This is a chip with 4 digitally controlled POTs and the pots can be daisy chained to have multiple chips controled by a single SPI interface.<br />
<br />
Digikey Part Number: AD5204BN10-ND<br />
<br />
<br />
AD5204 - 4-Channel, 256-Position Digital Potentiometer<br />
<br />
http://www.analog.com/images/Product_Descriptions/40826AD5204_S.jpg<br />
<br />
Datasheet: http://www.analog.com/UploadedFiles/Data_Sheets/140808745AD5204_6_0.pdf<br />
<br />
Availability:<br />
* Free samples: http://www.analog.com/en/prod/0,,761_797_AD5204,00.html#price<br />
* Digikey: http://www.digikey.com/scripts/DkSearch/dksus.dll?Detail?Ref=1480&Row=284443&Site=US (10k version - $5.02)<br />
<br />
Eagle footprint data:<br />
[[Image:AD5204a.png]]<br />
<br />
[[Media:AD5204.zip|Eagle library (footprint, schematic symbol)]]<br />
<br />
== voltage regulator ==<br />
<br />
[[Image:Main-LT1528.jpg|69px|LT1528]] [[LT1528]] High current, Variable Voltage Regulator<br />
<br />
[[Image:TPS-V-Reg.jpg|69px|TPS V-Reg]] [[TPS V-Regs]] These are 3.3V and 5V LDO, Low-Noise Voltage Regulators. Very small SOT-23 SMD package. 150mA max current. Best used in battery applications.<br />
<br />
[[Image:Main-LM7805.jpg|69px]] [[Basic Voltage Regulators]] Variable voltage regulators, set output regulators, we give you the whole breakdown. Perfect for use with an external wall-wart power supply.<br />
<br />
== microcontroller ==<br />
<br />
[[Image:lpc2103.jpg|69px|LPC2103]] [http://www.k9spud.com/arm/lpc2103/ LPC2103] Low cost 70MHz ARM7TDMI-S FLASH microcontroller from Philips.<br />
<br />
== Op Amps ==<br />
<br />
[[op amp]]s: great for amplifying weak signals from [[sensors]] to a more useful level. Also used in filters, integrators, etc. <br />
<br />
[[Category:Components]]</div>69.169.172.71http://www.opencircuits.com/index.php?title=Integrated_Circuits&diff=2003Integrated Circuits2006-07-20T06:50:28Z<p>69.169.172.71: /* Digitally Programmable Potentiometers */</p>
<hr />
<div>The digital Potentiometers made by analog devices (AD5204) has 255 positions can be adjusted by the microcomputer that can receive commands from the computer. This is a great way for analog circuitry to have digital control. This is a chip with 4 digitally controlled POTs and the pots can be daisy chained to have multiple chips controled by a single SPI interface.<br />
<br />
Digikey Part Number: AD5204BN10-ND<br />
<br />
<br />
AD5204 - 4-Channel, 256-Position Digital Potentiometer<br />
<br />
http://www.analog.com/images/Product_Descriptions/40826AD5204_S.jpg<br />
<br />
Datasheet: http://www.analog.com/UploadedFiles/Data_Sheets/140808745AD5204_6_0.pdf<br />
<br />
Availability:<br />
* Free samples: http://www.analog.com/en/prod/0,,761_797_AD5204,00.html#price<br />
* Digikey: http://www.digikey.com/scripts/DkSearch/dksus.dll?Detail?Ref=1480&Row=284443&Site=US (10k version - $5.02)<br />
<br />
Eagle footprint data:<br />
[[Image:AD5204a.png]]<br />
<br />
[[Media:AD5204.zip|Eagle library (footprint, schematic symbol)]]<br />
<br />
== voltage regulator ==<br />
<br />
[[Image:Main-LT1528.jpg|69px|LT1528]] [[LT1528]] High current, Variable Voltage Regulator<br />
<br />
[[Image:TPS-V-Reg.jpg|69px|TPS V-Reg]] [[TPS V-Regs]] These are 3.3V and 5V LDO, Low-Noise Voltage Regulators. Very small SOT-23 SMD package. 150mA max current. Best used in battery applications.<br />
<br />
[[Image:Main-LM7805.jpg|69px]] [[Basic Voltage Regulators]] Variable voltage regulators, set output regulators, we give you the whole breakdown. Perfect for use with an external wall-wart power supply.<br />
<br />
== microcontroller ==<br />
<br />
[[Image:lpc2103.jpg|69px|LPC2103]] [http://www.k9spud.com/arm/lpc2103/ LPC2103] Low cost 70MHz ARM7TDMI-S FLASH microcontroller from Philips.<br />
<br />
== other ==<br />
<br />
[[op amp]]s: great for amplifying weak signals from [[sensors]] to a more useful level. Also used in filters, integrators, etc. <br />
<br />
[[Category:Components]]</div>69.169.172.71http://www.opencircuits.com/index.php?title=AD5204&diff=2002AD52042006-07-20T06:43:16Z<p>69.169.172.71: </p>
<hr />
<div>The digital Potentiometers made by analog devices (AD5204) has 255 positions can be adjusted by the microcomputer that can receive commands from the computer. This is a great way for analog circuitry to have digital control. This is a chip with 4 digitally controlled POTs and the pots can be daisy chained to have multiple chips controled by a single SPI interface.<br />
<br />
AD5204 - 4-Channel, 256-Position Digital Potentiometer<br />
<br />
http://www.analog.com/images/Product_Descriptions/40826AD5204_S.jpg<br />
<br />
Datasheet: http://www.analog.com/UploadedFiles/Data_Sheets/140808745AD5204_6_0.pdf<br />
<br />
Availability:<br />
* Free samples: http://www.analog.com/en/prod/0,,761_797_AD5204,00.html#price<br />
* Digikey: http://www.digikey.com/scripts/DkSearch/dksus.dll?Detail?Ref=1480&Row=284443&Site=US (10k version - $5.02)<br />
<br />
Eagle footprint data:<br />
[[Image:AD5204a.png]]<br />
<br />
[[Media:AD5204.zip|Eagle library (footprint, schematic symbol)]]</div>69.169.172.71http://www.opencircuits.com/index.php?title=Digitally_Programmable_Potentiometers&diff=2001Digitally Programmable Potentiometers2006-07-20T06:42:41Z<p>69.169.172.71: </p>
<hr />
<div>The digital Potentiometers made by analog devices (AD5204) has 255 positions can be adjusted by the microcomputer that can receive commands from the computer. This is a great way for analog circuitry to have digital control. This is a chip with 4 digitally controlled POTs and the pots can be daisy chained to have multiple chips controled by a single SPI interface.<br />
<br />
Digikey Part Number: AD5204BN10-ND<br />
<br />
<br />
AD5204 - 4-Channel, 256-Position Digital Potentiometer<br />
<br />
http://www.analog.com/images/Product_Descriptions/40826AD5204_S.jpg<br />
<br />
Datasheet: http://www.analog.com/UploadedFiles/Data_Sheets/140808745AD5204_6_0.pdf<br />
<br />
Availability:<br />
* Free samples: http://www.analog.com/en/prod/0,,761_797_AD5204,00.html#price<br />
* Digikey: http://www.digikey.com/scripts/DkSearch/dksus.dll?Detail?Ref=1480&Row=284443&Site=US (10k version - $5.02)<br />
<br />
Eagle footprint data:<br />
[[Image:AD5204a.png]]<br />
<br />
[[Media:AD5204.zip|Eagle library (footprint, schematic symbol)]]</div>69.169.172.71http://www.opencircuits.com/index.php?title=Programmable_Chip_EEG&diff=1941Programmable Chip EEG2006-07-09T05:09:24Z<p>69.169.172.71: </p>
<hr />
<div>The Programmable Chip EEG is a dual channel electroencephalograph that could be a brain-computer interface.</div>69.169.172.71http://www.opencircuits.com/index.php?title=Programmable_Chip_EEG&diff=1940Programmable Chip EEG2006-07-09T05:09:03Z<p>69.169.172.71: </p>
<hr />
<div>The [http:\\pceeg.sourceforge.net Programmable Chip EEG] is a dual channel electroencephalograph that could be a brain-computer interface.</div>69.169.172.71http://www.opencircuits.com/index.php?title=Programmable_Chip_EEG&diff=1939Programmable Chip EEG2006-07-09T05:08:45Z<p>69.169.172.71: </p>
<hr />
<div>The [[http:\\pceeg.sourceforge.net Programmable Chip EEG]] is a dual channel electroencephalograph that could be a brain-computer interface.</div>69.169.172.71http://www.opencircuits.com/index.php?title=Programmable_Chip_EEG&diff=1938Programmable Chip EEG2006-07-09T05:08:01Z<p>69.169.172.71: </p>
<hr />
<div>The [[ http:\\pceeg.sourceforge.net Programmable Chip EEG]] is a dual channel electroencephalograph that could be a brain-computer interface.</div>69.169.172.71http://www.opencircuits.com/index.php?title=Programmable_Chip_EEG&diff=1937Programmable Chip EEG2006-07-09T05:07:46Z<p>69.169.172.71: </p>
<hr />
<div>The [[http:\\pceeg.sourceforge.net Programmable Chip EEG]] is a dual channel electroencephalograph that could be a brain-computer interface.</div>69.169.172.71http://www.opencircuits.com/index.php?title=Programmable_Chip_EEG&diff=1936Programmable Chip EEG2006-07-09T05:06:41Z<p>69.169.172.71: </p>
<hr />
<div>[[ http:\\pceeg.sourceforge.net The Programmable Chip EEG]] is a dual channel electroencephalograph that could be a brain-computer interface.</div>69.169.172.71http://www.opencircuits.com/index.php?title=Programmable_Chip_EEG&diff=1935Programmable Chip EEG2006-07-09T05:05:50Z<p>69.169.172.71: </p>
<hr />
<div>[[http:\\pceeg.sourceforge.net The Programmable Chip EEG]] is a dual channel electroencephalograph that could be a brain-computer interface.</div>69.169.172.71http://www.opencircuits.com/index.php?title=Programmable_Chip_EEG&diff=1934Programmable Chip EEG2006-07-09T05:04:46Z<p>69.169.172.71: </p>
<hr />
<div>[[The Programmable Chip EEG http:\\pceeg.sourceforge.net]] is a dual channel electroencephalograph that could be a brain-computer interface.</div>69.169.172.71http://www.opencircuits.com/index.php?title=Programmable_Chip_EEG&diff=1933Programmable Chip EEG2006-07-09T05:03:24Z<p>69.169.172.71: </p>
<hr />
<div>The [Programmable Chip EEG http:\\pceeg.sourceforge.net] is a dual channel electroencephalograph that could be a brain-computer interface.</div>69.169.172.71http://www.opencircuits.com/index.php?title=Programmable_Chip_EEG&diff=1932Programmable Chip EEG2006-07-09T05:01:48Z<p>69.169.172.71: </p>
<hr />
<div>The Programmable Chip EEG is a dual channel electroencephalograph that could be a brain-computer interface.</div>69.169.172.71http://www.opencircuits.com/index.php?title=Projects&diff=1931Projects2006-07-09T01:03:24Z<p>69.169.172.71: </p>
<hr />
<div>=== [[Programmable Chip EEG]] ===<br />
The Programmable Chip EEG is a dual channel electroencephalograph that could be a brain-computer interface.<br />
<br />
=== [[Open Mobile Gadgets]] ===<br />
An open source, open hardware mobile phone in its preliminary development.<br />
<br />
=== [[Music Player]]s including MP3 players ===<br />
<br />
[[TRAXMOD]] Open source MOD music player for dsPIC/ARM microcontrollers.<br />
<br />
=== [[PG31 GPS RS232 Dev Board]] ===<br />
A simple RS232 example project that takes 3.3V TTL serial and outputs to a super-common RS232 connection. Insto-NMEA!<br />
<br />
=== [[PG31 GPS USB Dev Board]] ===<br />
A great example project using the CP2102 USB to TTL UART IC as well as some basic battery holder info.<br />
<br />
=== [[Chalk Roach]] ===<br />
Ultra simple microcontroller development board for Atmel ATmega32 = 16MHz, 2KB SRAM, 16KB Flash<br />
<br />
=== LED displays ===<br />
<br />
* [[24" Wall Clock]] A really big wall clock. Why? Well, cause it might look cool? Probably not. But we do use GPS to get the time! Groovy.<br />
<br />
* [[POV display]] that spins around, giving the illusion of a large display. ([[User:DavidCary|DavidCary]])<br />
<br />
=== [[Cellular Rotary Phone]] ===<br />
An indepth breakdown of the Port-O-Rotary. Some clues to help you avoid audio problems with the GM862.<br />
<br />
=== [[Das Brewmeister!]] ===<br />
An attempt to wirelessly monitor temperatures of fermentation vessels<br />
<br />
=== [[Fermenter Controller]] ===<br />
A web available fermenter vessel controller. Uses PICs, i2c, Rs232 and python.<br />
<br />
=== [[Home controller]] ===<br />
Program your appliances to operate automatically in conjunction with your weekly and daily schedule, manually turn them on/off from your PC or use the controller as a process ON/OFF controller to regulate some kind of physical variable to the desired value.<br />
<br />
=== [[Interactive Lock Box]] ===<br />
An interesting project using an accelerometer and capacitive touch ICs.<br />
<br />
=== [[Motor driver]] (H-bridge) ===<br />
<br />
=== [[Atomic Microscope]] ===<br />
An atomic-resolution microscope.<br />
* STM (scanning tunnelling microscope)<br />
* AFM (atomic force microscope)<br />
<br />
=== [[BlueICE]] ===<br />
A bluetooth JTAG ICE debugger for AVR's!!!<br />
<br />
=== [[Sortof-Networked RFID Reader]] ===<br />
A 125Khz RFID Reader with a simple RS232 based ring network - to allow connection of multiple units to the same control computer.<br />
<br />
''Consider using [http://zytrax.com/tech/layer_1/cables/tech_rs232.htm#rj45 "RS-232D", aka "EIA/TIA-561"]. It has all the same wires and voltages as RS-232, but specifies a RJ45 connector.''<br />
<br />
''Also consider RS-485.''<br />
<br />
(What is the name of the standard for RS-485 on RJ14 ("4 wire RJ-11") or RJ45 ?)<br />
<br />
=== battery charger ===<br />
<br />
See [http://elecdesign.com/Article/ArticleID/1823/1823.html "Build A Smart Battery Charger Using A Single-Transistor Circuit"] by Ejaz ur Rehman.<br />
But be sure to read the "Reader Comments" at the end.<br />
The suggestion to add a zener diode is a good idea.<br />
<br />
<br />
----</div>69.169.172.71http://www.opencircuits.com/index.php?title=Integrated_Circuits&diff=1930Integrated Circuits2006-07-09T01:01:03Z<p>69.169.172.71: /* voltage regulator */</p>
<hr />
<div>== Programmable Potentiometers ==<br />
<br />
The digital POT made by analog devices (AD5204) has 255 positions can be adjusted by the microcomputer that can receive commands from the computer. This is a great way for analog circuitry to have digital control. This is a chip with 4 digitally controlled POTs and the pots can be daisy chained to have multiple chips controled by a single SPI interface. <br />
<br />
== voltage regulator ==<br />
<br />
[[Image:Main-LT1528.jpg|69px|LT1528]] [[LT1528]] High current, Variable Voltage Regulator<br />
<br />
[[Image:TPS-V-Reg.jpg|69px|TPS V-Reg]] [[TPS V-Regs]] These are 3.3V and 5V LDO, Low-Noise Voltage Regulators. Very small SOT-23 SMD package. 150mA max current. Best used in battery applications.<br />
<br />
[[Image:Main-LM7805.jpg|69px]] [[Basic Voltage Regulators]] Variable voltage regulators, set output regulators, we give you the whole breakdown. Perfect for use with an external wall-wart power supply.<br />
<br />
== microcontroller ==<br />
<br />
[[Image:lpc2103.jpg|69px|LPC2103]] [http://www.k9spud.com/arm/lpc2103/ LPC2103] Low cost 70MHz ARM7TDMI-S FLASH microcontroller from Philips.<br />
<br />
== other ==<br />
<br />
[[op amp]]s: great for amplifying weak signals from [[sensors]] to a more useful level. Also used in filters, integrators, etc. <br />
<br />
[[Category:Components]]</div>69.169.172.71http://www.opencircuits.com/index.php?title=Programmable_Potentiometers&diff=1929Programmable Potentiometers2006-07-09T00:53:50Z<p>69.169.172.71: </p>
<hr />
<div>The digital POT made by analog devices (AD5204) has 255 positions can be adjusted by the microcomputer that can receive commands from the computer. This is a great way for analog circuitry to have digital control. This is a chip with 4 digitally controlled POTs and the pots can be daisy chained to have multiple chips controled by a single SPI interface.<br />
<br />
This is used in [[http://pceeg.sourceforge.net The Programmable Chip EEG project at sourceforge.net]].</div>69.169.172.71http://www.opencircuits.com/index.php?title=Programmable_Potentiometers&diff=1928Programmable Potentiometers2006-07-09T00:53:02Z<p>69.169.172.71: </p>
<hr />
<div>The digital POT made by analog devices (AD5204) has 255 positions can be adjusted by the microcomputer that can receive commands from the computer. This is a great way for analog circuitry to have digital control. This is a chip with 4 digitally controlled POTs and the pots can be daisy chained to have multiple chips controled by a single SPI interface.<br />
<br />
This is used in The Programmable Chip EEG project at sourceforge [[http://pceeg.sourceforge.net The Programmable Chip EEG project at sourceforge]].</div>69.169.172.71http://www.opencircuits.com/index.php?title=Programmable_Potentiometers&diff=1927Programmable Potentiometers2006-07-09T00:52:29Z<p>69.169.172.71: </p>
<hr />
<div>The digital POT made by analog devices (AD5204) has 255 positions can be adjusted by the microcomputer that can receive commands from the computer. This is a great way for analog circuitry to have digital control. This is a chip with 4 digitally controlled POTs and the pots can be daisy chained to have multiple chips controled by a single SPI interface.<br />
<br />
This is used in The Programmable Chip EEG project at sourceforge [[The Programmable Chip EEG project at sourceforge http://pceeg.sourceforge.net]].</div>69.169.172.71http://www.opencircuits.com/index.php?title=Programmable_Potentiometers&diff=1926Programmable Potentiometers2006-07-09T00:51:58Z<p>69.169.172.71: </p>
<hr />
<div>The digital POT made by analog devices (AD5204) has 255 positions can be adjusted by the microcomputer that can receive commands from the computer. This is a great way for analog circuitry to have digital control. This is a chip with 4 digitally controlled POTs and the pots can be daisy chained to have multiple chips controled by a single SPI interface.<br />
<br />
This is used in The Programmable Chip EEG project at sourceforge [The Programmable Chip EEG project at sourceforge[http://pceeg.sourceforge.net]].</div>69.169.172.71http://www.opencircuits.com/index.php?title=Programmable_Potentiometers&diff=1925Programmable Potentiometers2006-07-09T00:51:31Z<p>69.169.172.71: </p>
<hr />
<div>The digital POT made by analog devices (AD5204) has 255 positions can be adjusted by the microcomputer that can receive commands from the computer. This is a great way for analog circuitry to have digital control. This is a chip with 4 digitally controlled POTs and the pots can be daisy chained to have multiple chips controled by a single SPI interface.<br />
<br />
This is used in The Programmable Chip EEG project at sourceforge[[http://pceeg.sourceforge.net]].</div>69.169.172.71http://www.opencircuits.com/index.php?title=Programmable_Potentiometers&diff=1924Programmable Potentiometers2006-07-09T00:51:09Z<p>69.169.172.71: </p>
<hr />
<div>The digital POT made by analog devices (AD5204) has 255 positions can be adjusted by the microcomputer that can receive commands from the computer. This is a great way for analog circuitry to have digital control. This is a chip with 4 digitally controlled POTs and the pots can be daisy chained to have multiple chips controled by a single SPI interface.<br />
<br />
This is used in The Programmable Chip EEG project at sourceforge [[http://pceeg.sourceforge.net]].</div>69.169.172.71http://www.opencircuits.com/index.php?title=Programmable_Potentiometers&diff=1923Programmable Potentiometers2006-07-09T00:49:48Z<p>69.169.172.71: </p>
<hr />
<div>The digital POT made by analog devices (AD5204) has 255 positions can be adjusted by the microcomputer that can receive commands from the computer. This is a great way for analog circuitry to have digital control. This is a chip with 4 digitally controlled POTs and the pots can be daisy chained to have multiple chips controled by a single SPI interface.<br />
<br />
This is used in http://pceeg.sourceforge.net[[The Programmable Chip EEG project at sourceforge]]http://pceeg.sourceforge.net.</div>69.169.172.71http://www.opencircuits.com/index.php?title=Programmable_Potentiometers&diff=1922Programmable Potentiometers2006-07-09T00:49:20Z<p>69.169.172.71: </p>
<hr />
<div>The digital POT made by analog devices (AD5204) has 255 positions can be adjusted by the microcomputer that can receive commands from the computer. This is a great way for analog circuitry to have digital control. This is a chip with 4 digitally controlled POTs and the pots can be daisy chained to have multiple chips controled by a single SPI interface.<br />
<br />
This is used in [[The Programmable Chip EEG project at sourceforge]]http://pceeg.sourceforge.net.</div>69.169.172.71http://www.opencircuits.com/index.php?title=Programmable_Potentiometers&diff=1921Programmable Potentiometers2006-07-09T00:48:27Z<p>69.169.172.71: </p>
<hr />
<div>The digital POT made by analog devices (AD5204) has 255 positions can be adjusted by the microcomputer that can receive commands from the computer. This is a great way for analog circuitry to have digital control. This is a chip with 4 digitally controlled POTs and the pots can be daisy chained to have multiple chips controled by a single SPI interface.<br />
<br />
This is used in [[The Programmable Chip EEG project at sourceforge]http://pceeg.sourceforge.net].</div>69.169.172.71