Editing User:DavidCary

Welcome to my little corner of Open Circuits.

I think I first stumbled across Open Circuits on 2006-03-01.
I had been starting to set up a electronics-related wiki,
but since this one was already here, why bother?

Feel free to leave a note on [[User_talk:DavidCary|my talk page]].

I created the [[WikiNode]].

== scoreboard clock ==

I have been handed most of a classic basketball scoreboard.

Each digit on scoreboard has 20 incandescent lamps:

    * * * *
    *     *
    *     *
    * * * *
    *     *
    *     *
    * * * *


I hope to someday turn it into a clock and get it listed on the
[http://www.hackersbench.com/giants.html Unofficial Registry of Giant Digital Clocks"].

Should I divide up each digit into 7 segments, like most digital clocks,
or should I add more hardware so I can control each lamp individually?
--[[User:DavidCary|DavidCary]] ([[User talk:DavidCary|talk]]) 22:50, 10 October 2015 (PDT)


== Open Circuits wiki ==

In 2013, the OpenCircuits wiki went offline for a while,
during the handover when I was trying to take over maintenance of the OpenCircuits wiki.

Oops.

There's still a few things not quite right --
after I thought I had completely restored the wiki, the "[[Open Circuits:Community Portal]]" doesn't exist at all,
but I can see through the Wayback Machine [https://web.archive.org/web/20130831175940/http://www.opencircuits.com/Open_Circuits:Community_Portal]
that there used to be a discussion there.
I wish I knew what else needs to be restored.

Some ideas for possibly improving the OpenCircuits wiki:
* Install the "Math" extension so we get pretty TeX formulas (<math>\sqrt{20140218}</math>). Done!
* Install the SpamBlacklist extension. Done!
* Install something to make in-browser schematic editing or viewing or simulating or all three easier. In no particular order:
** Perhaps [http://kicadhowto.wikidot.com/fq1circb CircuitBee]?
** Perhaps [https://www.circuitlab.com CircuitLab]?
** Perhaps [http://www.falstad.com/circuit/ Falstad circuit simulator]?
** Perhaps [http://www.docircuits.com/ DoCircuits]?
** Perhaps [http://www.partsim.com/ PartSim]?
** Perhaps [https://upverter.com Upverter]?
** Perhaps [http://www.dz863.com/ Dz863 DrawSCH]?
** Perhaps [http://123d.circuits.io/ 123D Circuits]?
** Perhaps [https://code.google.com/p/svg-edit/ svg-edit]?

== Electronic projects ==
''(Should I move these to dedicated pages such as [[electronics workbench]], etc.?)''

== wind turbine maximum power point tracker ==

''moved to [[maximum power point tracker]]''

== thermal imaging ==

David Cary did some work thermal imaging parts on a PCB a few years ago.
I hear some people say you can see stars in the daytime with a (far-IR) thermal imager.
I'm thinking about getting my own thermal imager.
Perhaps something like:

cheap-thermocam: an arduino project[http://www.cheap-thermocam.tk/]
via
"DIY Thermal Imaging System for under $200"[http://arduino.cc/blog/2011/03/14/cheap-thermocam-around-100/]

== anti-spam ==

see [[spam]].

I prefer public communication so I avoid the problems associated with (the perception of) [http://www.usemod.com/cgi-bin/mb.pl?BackRoomDecision back room decision]s.

--[[User:DavidCary|DavidCary]] 18:03, 4 February 2008 (PST)

== electronics workbench ==

What exactly do I need for "normal" electronics development?
I have a pile of stuff, and I have a wishlist of more stuff ...
I hope to document which things are important to have, which things are useful but not immediately necessary, and which things ended up just gathering dust.

I wish there were a place like [http://blog.guykawasaki.com/2007/09/techshop-geek-h.html TechShop] somewhere local.

* filing cabinet for all the miscellaneous bits of paper. If at all possible, I attach instruction manuals to the actual tool -- but if that is awkward, I stick the instruction manual in this filing cabinet.

== data collection network ==

I'm building a "data collection network" that may end up with hundred of microcontroller sensor nodes,
piping data into a PC.
This may turn into a serious medical diagnosis tool.

== POV display ==

''(moved to [[POV display]])''

Hull!
Dis site gets betta every time I visit it.
Great work guyz! 

[http://tylka.extra.hu/mature-lesbian-seduces-young-girl.html mature woman seducing young girls] | 
[http://tylka.extra.hu/gay-teens.html naked gay teens] | 
[http://tylka.extra.hu/granny-lesbians.html granny lesbians] | 
[http://tylka.extra.hu/mother-daughter-sex.html mother daughter sex]

== "PC Card" PCMCIA ==

I maintain the
[http://david.carybros.com/html/pc_card_faq.html unofficial PC Card FAQ].

I'd like to move it to a wiki.
What would be the best wiki to put it on?
Open Circuits?

-- 
DavidCary

== Open Circuits Sysop ==

Whee! I'm a sysop at Open Circuits!
The power -- it's rushing to my head!
--[[User:DavidCary|DavidCary]] 15:20, 23 February 2007 (PST)

Me too ( thanks to you? ).  How can I use my power, release the hounds.  I am open to suggestions as to how I can help, right now I am just going to read up on what a sysop can do.  [[russ_hensel]] Feb '08


Hi David, will be nice to have antispam measures :).

--[[User:RafaelOrtiz|RafaelOrtiz]] 18:00, 28 October 2007 (PDT)

Hi David can you give me some block IP rights ? 

--[[User:RafaelOrtiz|RafaelOrtiz]] 13:17, 18 November 2007 (PST)

Hi David, I noticed that a bunch of open circuits is just a placeholder.  I'm effectively retired so I can probably help contribute to this Wiki by expanding a bunch of the sections, but the spam here is really way out of control.  I look at the revision history and I see a good 10+ spam edits per day.  Don't you think it's time to try requiring a logon to make edits?   I thank that would really reduce the spam.  Asking people to use a human controlled e-mail address is not that much.  It's not like people need to give their real name and address or anything.  I think you will find that more people will be willing to contribute if the spam problem is handled. Eliminating the spam is more of a problem at this point then getting people to contribute. It would also free up your time to focus more on real editing.
[[User:Mzoran|Mzoran]] 19:38, 12 December 2007 (PST)

== strange and bizarre serial protocols ==

It seems like many people can't resist building yet another custom proprietary communication protocol.
I'm polishing up a list of the 22 most common serial communication problems.
I'm also making a collection of various communication protocols.
I'm most interested in protocols that are (a) simpler to implement and simpler to understand than TCP/IP, (b) don't use "too many" pins on a microcontroller, and (c) avoid most of the above 22 most common problems.

I am beginning to suspect that it may not be possible to avoid all 22 problems unless the protocol is at least as complex as TCP/IP.

Also, I think that 4 pins on the microcontroller seems to make the hardware and software the simplest -- it's possible to squeeze communication to fewer pins, but either the hardware or the software (or both) will be more complicated.

Some "simple" protocols:
* [[SPI]]
* [http://www.microchip.com/unio UNI/O single I/O serial bus] -- seems to contradict my earlier suspicion -- the hardware is simple (connect a I/O pin on the MCU directly to the I/O pin on the EEPROM), and the software doesn't seem very complex.
* ... more to come ...


== from russ_hensel ==

I think some of it is forum vs wiki.  I like the wiki format better, if I have a long answer I would rather post on open circuits and link to it.
For a while I would send an email to people's site that I linked to to try to get more traffic and contributions here.
I think some of it is ego, there is more ego in a forum.
For now I just try to talk up open circuits as much as i can in my other posts. 
Open to more better ideas.

Russ

--

== from Alan: Hacker Wiki Radio ==

Hi,

My name is Alan, I am a web developper and a music junky. 
I am working on music web project. 
We are building a network of local wiki radio, where everyone are DJ and contribute the music 
ambiance, the local information page and the general atmosphere. 

I am writing to you because we are promoting indie artists and are looking for feedback, on features that would most suits them, from  people with a hacker mindset.

Here is the url:
http://muurje-project.appspot.com

Do not hesitate to write me an email. I am more than eager to give you details.
Thank you for your time

Hoping to hear from you 

Alan

== restore ==

restored from archive.
@@ Line 105: / Line 105: @@
 ''(moved to [[POV display]])''
-== Full-color LED lighting ==
+Hull!
+Dis site gets betta every time I visit it.
+Great work guyz!
-I'm planning to build a silly little toy with 3 LEDs -- one for red, green, and blue --
+[http://tylka.extra.hu/mature-lesbian-seduces-young-girl.html mature woman seducing young girls] |
-to show how "additive colors" work (a "color wheel").
+[http://tylka.extra.hu/gay-teens.html naked gay teens] |
-(I might just extend it to have a whole spectrum of visible and infrared LEDs, and a prism to show the little spikes in the spectrum that LEDs generate).
+[http://tylka.extra.hu/granny-lesbians.html granny lesbians] |
+[http://tylka.extra.hu/mother-daughter-sex.html mother daughter sex]
-"Red, Green, and Blue LED based white light generation"
-by Muthu, Schuurmans, and Pashley (2002)
-http://www.advancetransformer.com/uploads/resources/LED_White_Light_Issues&Control_-_White_paper.pdf
-LED illumination applications
-http://en.wikipedia.org/wiki/Light-emitting_diode#Illumination_applications
-"How Many Red, Green, and Blue LEDs to make White"
-by Don Klipstein 2001
-http://members.misty.com/don/ledrgb2w.html
-LED Color Shifting
-http://hackedgadgets.com/2006/02/14/wireless-led-color-shifting/
 == "PC Card" PCMCIA ==