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Welcome to my little corner of Open Circuits.
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[http://www.csun.edu/learningnet/discussion/file.php?0,file=157 free sony ericsson ringtones] [http://www.hcs.harvard.edu/~twiki/pub/Main/CoyarCharline/rujop.htm generic phentermine] [http://woolygrrl.blogspot.com valium side effects] [http://www8.vjc.edu/EnvironmentalClub/discuss/msgReader$134 valium online] [http://www8.vjc.edu/EnvironmentalClub/discuss/msgReader$95 cheap diazepam] [http://www.hcs.harvard.edu/~twiki/pub/Main/AngelKristofer/tubonyh.htm samsung ringtones] [http://src.moffitt.usf.edu/sf/sfmain/do/downloadAttachment/projects.jaffy/tracker.bug_tracker/artf1030?id=atch1113 cheap hoodia] Welcome to my little corner of Open Circuits.
  
 
I think I first stumbled across Open Circuits on 2006-03-01.
 
I think I first stumbled across Open Circuits on 2006-03-01.
Line 9: Line 9:
 
I created the [[WikiNode]].
 
I created the [[WikiNode]].
  
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== scoreboard clock ==
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Electronic projects:
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I have been handed most of a classic basketball scoreboard.
 
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Each digit on scoreboard has 20 incandescent lamps:
 
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    * * * *
 
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    *    *
 
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    *    *
 
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    * * * *
 
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    *    *
 
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    *    *
 
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    * * * *
 
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I hope to someday turn it into a clock and get it listed on the
 
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[http://www.hackersbench.com/giants.html Unofficial Registry of Giant Digital Clocks"].
 
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Should I divide up each digit into 7 segments, like most digital clocks,
 
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or should I add more hardware so I can control each lamp individually?
 
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--[[User:DavidCary|DavidCary]] ([[User talk:DavidCary|talk]]) 22:50, 10 October 2015 (PDT)
 
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== Open Circuits wiki ==
 
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In 2013, the OpenCircuits wiki went offline for a while,
 
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during the handover when I was trying to take over maintenance of the OpenCircuits wiki.
 
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Oops.
 
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There's still a few things not quite right --
 
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after I thought I had completely restored the wiki, the "[[Open Circuits:Community Portal]]" doesn't exist at all,
 
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but I can see through the Wayback Machine [https://web.archive.org/web/20130831175940/http://www.opencircuits.com/Open_Circuits:Community_Portal]
 
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that there used to be a discussion there.
 
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I wish I knew what else needs to be restored.
 
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Some ideas for possibly improving the OpenCircuits wiki:
 
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* Install the "Math" extension so we get pretty TeX formulas (<math>\sqrt{20140218}</math>). Done!
 
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* Install the SpamBlacklist extension. Done!
 
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* Install something to make in-browser schematic editing or viewing or simulating or all three easier. In no particular order:
 
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** Perhaps [http://kicadhowto.wikidot.com/fq1circb CircuitBee]?
 
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** Perhaps [https://www.circuitlab.com CircuitLab]?
 
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** Perhaps [http://www.falstad.com/circuit/ Falstad circuit simulator]?
 
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** Perhaps [http://www.docircuits.com/ DoCircuits]?
 
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** Perhaps [http://www.partsim.com/ PartSim]?
 
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** Perhaps [https://upverter.com Upverter]?
 
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** Perhaps [http://www.dz863.com/ Dz863 DrawSCH]?
 
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** Perhaps [http://123d.circuits.io/ 123D Circuits]?
 
−
** Perhaps [https://code.google.com/p/svg-edit/ svg-edit]?
 
−
 
 
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== Electronic projects ==
 
 
''(Should I move these to dedicated pages such as [[electronics workbench]], etc.?)''
 
''(Should I move these to dedicated pages such as [[electronics workbench]], etc.?)''
−
 
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== wind turbine maximum power point tracker ==
 
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''moved to [[maximum power point tracker]]''
 
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== thermal imaging ==
 
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David Cary did some work thermal imaging parts on a PCB a few years ago.
 
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I hear some people say you can see stars in the daytime with a (far-IR) thermal imager.
 
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I'm thinking about getting my own thermal imager.
 
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Perhaps something like:
 
−
 
−
cheap-thermocam: an arduino project[http://www.cheap-thermocam.tk/]
 
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via
 
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"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 ==
 
== electronics workbench ==
Line 90: Line 17:
 
I have a pile of stuff, and I have a wishlist of more stuff ...
 
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 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 ==
 
== data collection network ==
Line 113: Line 36:
 
"Red, Green, and Blue LED based white light generation"
 
"Red, Green, and Blue LED based white light generation"
 
by Muthu, Schuurmans, and Pashley (2002)
 
by Muthu, Schuurmans, and Pashley (2002)
−
http://www.advancetransformer.com/uploads/resources/LED_White_Light_Issues&Control_-_White_paper.pdf
+
http://www.advancetransformer.com/uploads/resources/LED_White_Light_Issues
−
 
 
−
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 ==
 
−
 
 
−
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.
 

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