Editing Programmable Chip EEG
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That circuit inverts the common mode signal from the instrumentation amp, sums the result from each instrumentation amp, and sends the total back to the body. | That circuit inverts the common mode signal from the instrumentation amp, sums the result from each instrumentation amp, and sends the total back to the body. | ||
− | The ADCs | + | The ADCs simultaneously digitize all the analog signals ''(really?)'' I have to look into this.... |
The ADCs send bits of information (representing the original analog electrical signals) to the controller motherboard. | The ADCs send bits of information (representing the original analog electrical signals) to the controller motherboard. | ||
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The controller board can be programmed using AVR GCC. | The controller board can be programmed using AVR GCC. | ||
− | Here is the | + | [[image:UCschematicardunonmonolith.png]] |
+ | Here is the circuit board of it. | ||
look at [http://www.pceeg.sourceforge.net pceeg.sourceforge.net] | look at [http://www.pceeg.sourceforge.net pceeg.sourceforge.net] | ||
− | Partlist | + | Partlist |
look at [http://www.pceeg.sourceforge.net pceeg.sourceforge.net] | look at [http://www.pceeg.sourceforge.net pceeg.sourceforge.net] | ||
− | + | Exported from PCEEG_Version_1.02_Alpha_05-09-08_uC.sch at 6/16/2008 3:41:30 PM | |
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+ | EAGLE Version 5.0.0 Copyright (c) 1988-2008 CadSoft | ||
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+ | Part Value Device Package Library Sheet | ||
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+ | B2 RB1A RB1A rectifier 1 | ||
+ | C0 1000uf CPOL-USE5-13 E5-13 rcl 1 | ||
+ | C1 .1uf CAPNP-5@2 C-5@1 DISCRETE 1 | ||
+ | C2 1µF ELC-2,5 EL25B DISCRETE@2 1 | ||
+ | C3 330uf CPOL-USE5-10.5 E5-10,5 rcl 1 | ||
+ | C4 .1uf CAPNP-5 C-5 DISCRETE 1 | ||
+ | C5 47µF ELC-5 EL25B DISCRETE 1 | ||
+ | C6 .1uf CAPNP-5@2 C-5@1 DISCRETE 1 | ||
+ | C7 .01uf CAPNP-5 C-5 DISCRETE 1 | ||
+ | C8 .1uf CAPNP-5 C-5 DISCRETE 1 | ||
+ | C9 47µF ELC-5 EL25B DISCRETE 1 | ||
+ | C13 0.1uF C-US025-025X050 C025-025X050 minimidi 1 | ||
+ | C14 0.1uF C-US025-025X050 C025-025X050 minimidi 1 | ||
+ | D1 Green LED3MM LED3MM minimidi 1 | ||
+ | D2 RED LED5 LED5 LED 1 | ||
+ | IC1 78XXS 78XXS v-reg 1 | ||
+ | IC2 ATMEGA168P ATMEGA168PROUND DIL28/3 avr 1 | ||
+ | IC105 TMV0505S TMV0505 TMADCDC MODEEG 1 | ||
+ | J1 2.1MMJACK 2.1MMJACK PJ-102A minimidi 1 | ||
+ | JP1 PINHD-2X3 2X03 pinhead-ez 1 | ||
+ | L1 22µH L-10 R-12,5 DISCRETE@2 1 | ||
+ | L2 22µH L-10 R-12,5 DISCRETE@2 1 | ||
+ | OK1 6N137 6N137 DIL08 optocoupler 1 | ||
+ | OK2 6N137 6N137 DIL08 optocoupler 1 | ||
+ | OK3 6N137 6N137 DIL08 optocoupler 1 | ||
+ | R1 1k R-US_0207/5V 0207/5V rcl 1 | ||
+ | R2 10k R-US_0207/5V 0207/5V rcl 1 | ||
+ | R3 1k R-US_0207/5V 0207/5V rcl 1 | ||
+ | R4 1k R-US_0207/5V 0207/5V rcl 1 | ||
+ | R5 1k R-US_0207/5V 0207/5V rcl 1 | ||
+ | R6 1k R-US_0207/5V 0207/5V rcl 1 | ||
+ | R7 1k R-US_0207/5V 0207/5V rcl 1 | ||
+ | R8 1k R-US_0207/5V 0207/5V rcl 1 | ||
+ | R9 1k R-US_0207/5V 0207/5V rcl 1 | ||
+ | S2 RESET 10-XX B3F-10XX switch-omron 1 | ||
+ | SV1 MA03-1 MA03-1 con-lstb 1 | ||
+ | SV2 MA09-1 MA09-1 con-lstb 1 | ||
+ | SV3 MA03-1 MA03-1 con-lstb 1 | ||
+ | SV4 MA03-1 MA03-1 con-lstb 1 | ||
+ | SV7 MA06-1 MA06-1 con-lstb 1 | ||
+ | SV8 MA08-1 MA08-1 con-lstb 1 | ||
+ | USB.I/O MA06-1 MA06-1 con-lstb 1 | ||
+ | X2 16.00MHz CERMOSCILL CERM_OSC digg 1 | ||
+ | |||
+ | Working on some other improvements... C123 with 1uF is much too small. Use 1000uF or so instead. | ||
look at [http://www.pceeg.sourceforge.net pceeg.sourceforge.net] | look at [http://www.pceeg.sourceforge.net pceeg.sourceforge.net] | ||
+ | |||
+ | [[image:adschematicad1256devbrdnmonolith.png]] | ||
+ | Here is the circuit board of it. | ||
+ | [[image:PCEEG_Version_1.34_Alpha_06-15-08_ADBrd.png]] | ||
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+ | Partlist | ||
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+ | see the [pceeg.sourceforge.net] for the latest parts list. | ||
== Parts used in the PCEEG: == | == Parts used in the PCEEG: == | ||
* [http://opencircuits.com/LT1168 LT1168 Resistor-Programmable-Gain Precision Instrumentation Amplifier] is used to amplify the weak electric signals coming from the brain through electrodes attached to the scalp, etc. | * [http://opencircuits.com/LT1168 LT1168 Resistor-Programmable-Gain Precision Instrumentation Amplifier] is used to amplify the weak electric signals coming from the brain through electrodes attached to the scalp, etc. | ||
− | * and | + | * Several [http://opencircuits.com/LT1114 LT1114 Low Power Precision OP-Amps] are used for amplification and filtering of the signal |
==ESD Protection in 1168== | ==ESD Protection in 1168== | ||
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* Maxima a computer algebra system s used for graphing and math displays. | * Maxima a computer algebra system s used for graphing and math displays. | ||
*SPI interface code for a/d converters from TI for developers | *SPI interface code for a/d converters from TI for developers | ||
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=== How You Can Help === | === How You Can Help === | ||
#. get the tools | #. get the tools | ||
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== Open Source Circuit Design == | == Open Source Circuit Design == | ||
* [http://opencircuits.com/Programmable_Chip_EEG Open Source Circuit Design ] | * [http://opencircuits.com/Programmable_Chip_EEG Open Source Circuit Design ] | ||
− | * [http:// | + | * [http://pceegbci.blog.com/ The Programmable Chip EEG Open Source Circuit Design BLog] ''(BrokenLink -- I hope this is only temporarily offline. --[[User:DavidCary|DavidCary]] 10:12, 8 October 2007 (PDT) )'' |
== ideas for future work == | == ideas for future work == | ||
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Please contribute and make the PCEEG a great tool for researching brain computer interfaces. | Please contribute and make the PCEEG a great tool for researching brain computer interfaces. | ||
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== See also: == | == See also: == | ||
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* [http://www.nytimes.com/2008/01/15/science/15robo.html?ex=1359090000&en=69146e0fb3807a74&ei=5124&partner=permalink&exprod=permalink/ Monkey’s Thoughts Propel Robot, a Step That May Help Humans ] | * [http://www.nytimes.com/2008/01/15/science/15robo.html?ex=1359090000&en=69146e0fb3807a74&ei=5124&partner=permalink&exprod=permalink/ Monkey’s Thoughts Propel Robot, a Step That May Help Humans ] | ||
+ | * [http://wiki.asiaquake.org/openeeg/published/ The OpenEEG wiki] | ||
+ | * [http://pceegbci.blog.com/ The Open EEG Brain Computer Interface BLog] | ||
* [http://www.larryheadinstitute.com/eeg-training.html EEG Training Seminars] | * [http://www.larryheadinstitute.com/eeg-training.html EEG Training Seminars] | ||
+ | * [http://pceeg.wikia.com/wiki/Main_Page wiki cities on pceeg] | ||
* [http://pceeg.sourceforge.net pceeg.sourceforge.net] | * [http://pceeg.sourceforge.net pceeg.sourceforge.net] | ||
* [http://www.answers.com/topic/miguel-nicolelis miguel nicolelis] | * [http://www.answers.com/topic/miguel-nicolelis miguel nicolelis] | ||
* [http://maxima.sourceforge.net/ Maxima - a computer algebra system] | * [http://maxima.sourceforge.net/ Maxima - a computer algebra system] | ||
− | * [[PCB Manufacturers]] | + | * [http://www.scienceprog.com/ digital high pass filters and other circuits] |
− | + | * [http://hcvl.hci.iastate.edu/cgi-bin/openEyes.cgi human and computer vision lab] | |
+ | * [[PCB Manufacturers]] such as [http://www.batchpcb.com/index.php www.batchpcb.com] | ||
* [http://vulliard.dyndns.org/~vulliard/ eeg biofeedback "mind machine"] | * [http://vulliard.dyndns.org/~vulliard/ eeg biofeedback "mind machine"] | ||
* [http://freenet-homepage.de/moosec/projekte/simpleeeg/index-Dateien/Page431.htm monolith eeg] | * [http://freenet-homepage.de/moosec/projekte/simpleeeg/index-Dateien/Page431.htm monolith eeg] | ||
+ | * [http://mindhacks.com/blog/2007/01/meg_scanning_the_bra.html yet another pundit disrespects the EEG] | ||
+ | * [http://www.pololu.com/laser_cutting.html lazer cutting for box & solder paste stencil] | ||
+ | * [http://www.amazon.com/Build-Your-Printed-Circuit-Board/dp/007142783X?tag2=zottmann1-20 Build Your Own Printed Circuit Board] | ||
* [http://www.stencilsunlimited.com/solder_products.php solder paste for surface mount that can be stored at room temperature] | * [http://www.stencilsunlimited.com/solder_products.php solder paste for surface mount that can be stored at room temperature] | ||
* The thread [http://forum.microchip.com/tm.aspx?m=114626 "amplifying biomedical signals: 150 uA with 16 bit resolution?"] has several op-amp suggestions, and mentions that "a good, low-noise, low-cost, isolated EMG/EEG amplifier is one of the most demanding analog electronics designs." | * The thread [http://forum.microchip.com/tm.aspx?m=114626 "amplifying biomedical signals: 150 uA with 16 bit resolution?"] has several op-amp suggestions, and mentions that "a good, low-noise, low-cost, isolated EMG/EEG amplifier is one of the most demanding analog electronics designs." | ||
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* Is there a [http://www.electronicproducts.com/ShowPage1.asp?SECTION=&PRIMID=&FileName=medtelconf3%2Ejul2004%2Ehtml&ReturnLink=%2FSearch1%2Easp%3FManufacturer%3D%26Keyword%3Dimplantables%26Slot%3D0%26StartNum%3D1%26stype%3D%26year%3D10&MonthYear=Jul+2004 Medical Electronics Forum]? | * Is there a [http://www.electronicproducts.com/ShowPage1.asp?SECTION=&PRIMID=&FileName=medtelconf3%2Ejul2004%2Ehtml&ReturnLink=%2FSearch1%2Easp%3FManufacturer%3D%26Keyword%3Dimplantables%26Slot%3D0%26StartNum%3D1%26stype%3D%26year%3D10&MonthYear=Jul+2004 Medical Electronics Forum]? | ||
* [http://www.makezine.com/blog/archive/2006/01/homemade_electrocardiograph.html Make: Homemade Electrocardiograph] ([http://www.eng.utah.edu/~jnguyen/ecg/ecg_index.html] recommends skin lotion or shampoo as a low-cost electrode gel) | * [http://www.makezine.com/blog/archive/2006/01/homemade_electrocardiograph.html Make: Homemade Electrocardiograph] ([http://www.eng.utah.edu/~jnguyen/ecg/ecg_index.html] recommends skin lotion or shampoo as a low-cost electrode gel) | ||
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[[Category:Projects]] | [[Category:Projects]] |