Editing Projects

''What is a good way to break this long page into shorter pieces? Discuss: [[Talk:Projects#too_big_to_edit]].''
=== Open Circuits ===

These should be projects or links to projects that are open, at a minimum in the sense that there is enough information so that others can reproduce the project.  Lets stay away from sites that are just show cases without the details.
In no particular order:


=== Open source ventilator ===

[[open source ventilator]]

=== Open hardware stenotype chorded keyboard ===


* [http://openstenoproject.org/#hardware The Open Steno Project: Hardware]
* [http://ergodox.org/ ErgoDox] design and hardware files are released under GPLv3.
* [http://stenosaurus.com/ Stenosaurus]; [https://github.com/openstenoproject/stenosaurus Stenosaurus firmware on Github]; [http://plover.stenoknight.com/2013/08/introducing-stenosaurus.html "Introducing the Stenosaurus"]; [http://plover.stenoknight.com/2013/08/hands-on-with-stenosaurus.html "Hands On with the Stenosaurus"].
* [http://stenoboard.com/ Stenoboard]
* [http://hardware.slashdot.org/story/14/08/12/1812250/type-225-words-per-minute-with-a-stenographic-keyboard-video Slashdot: "Type 225 Words per Minute with a Stenographic Keyboard"].


=== Other open-hardware keyboards ===


* [http://www.key64.org/ "Key64 is libre hardware design"]
* [http://wiki.geekhack.org/ GeekHackWiki]: mechanical keyboards and related DIY projects


[[File:Axiom_Beta.jpg|200px|thumb|right|AXIOM Beta]]

=== Open-hardware camera system ===

* [https://apertus.org/ apertus° - open source cinema] Open Technology for Professional Film Production

AXIOM introduces the first professional, extendable and modular cinema camera platform entirely based on free software, open design and open hardware.

This project was created by film-makers who were fed up with the expensive and limited tools they had to work with every day. The desire to have devices/technology without limitations, that are tailored exactly to the film-makers needs sparked the creation of the apertus° project and still keeps it going many years later.
The created technology will be freely adaptable, just as the generated knowledge are made freely available. The AXIOM product line is the result of the ongoing endeavor to redefine the industry well beyond the DIY garages and hobbyist labs the project started in: to build the very first open digital cinema camera from scratch and to create a platform for film-makers, creative industry professionals, artists and enthusiasts.

AXIOM was inspired by the earlier [[Elphel camera]] open hardware camera.


=== SD Card Bathroom Scale ===
On [http://code.google.com/p/casainho-projects/wiki/SdCardBathroomScale SD Card Bathroom Scale project] I hacked a cheap commercial digital bathroom scale, for write (log) my weight variations over time, on a memory SD Card. I write the information (time + weight) on a comma separated values (CSV) file (weight.csv) so I can quickly build a graph using OpenOffice.

=== Programmable Chip EEG ===
The [[Programmable Chip EEG]] is a Multi-channel electroencephalograph that could be a brain-computer interface.
See the [http://openeeg.sourceforge.net/doc/ OpenEEG Project]

=== tricorder ===

the Qualcomm Tricorder X PRIZE.
A $10 million competition to bring healthcare to the palm of your hand.
http://www.qualcommtricorderxprize.org/

The tricorder project:
A Canadian developer, Dr. Peter Jansen, has been making functional tricorders.
Science Tricorder Mark 2 runs Linux and has many sensors.
http://www.tricorderproject.org/

Seth Colaner.
"Canadian Developer Building Open Source Tricorders".
[http://hothardware.com/News/Canadian-Developer-Building-Open-Source-Tricorders/]

Emi Kolawole.
"Homemade tricorders and handheld health care".
[http://www.washingtonpost.com/blogs/innovations/post/homemade-tricorders-and-handheld-health-care/2012/03/30/gIQAd9MDlS_blog.html]

Mari Silbey.
"How to make your own tricorder".
[http://www.smartplanet.com/blog/thinking-tech/how-to-make-your-own-tricorder/11058]

=== RetroBrew Computers Project ===
The RetroBrew Computers Project (also called "Home Brew Computing Project" ?) began with the Andrew Lynch (N8VEM) Single Board Computer (SBC), a home brew Z80 small computer project. It is made in the style of vintage computers of the mid to late 1970's and early 1980's using a mix of classic and modern technologies.  Its purpose is to entertain through education.  It is intended to be used to teach and promote principles of electronic computer design.  It is a solely non-profit educational project and is not intended for any commercial application.  Please see the wiki for detailed information on the N8VEM project.
[http://groups.google.com/group/n8vem N8VEM Mailing List]
[http://www.retrobrewcomputers.org/ RetroBrew Computers Wiki] (was:
[http://n8vem-sbc.pbwiki.com/ N8VEM wiki]
)

RetroBrew Computers Projects includes boards supporting the Zilog Z80, Motorolo 6809, MOS Technology 6502, as well as ISA bus and S100 bus.

Related websites building new computers in the style of vintage computers:

* [http://www.retrobrewcomputers.org/forum "RetroBrew Computers Forum"]
* [http://www.lo-tech.co.uk/wiki/ "the lo-tech blog wiki"]
* [http://www.malinov.com/Home/sergeys-projects "Sergey's Projects"]
* [http://dangerousprototypes.com/docs/XT_IDE_disk_controller "Vintage Computer forum"]


== Home Power - Off the Grid Projects ==

=== Maximum Power Point Trackers MPPT ===
(1) The Free Charge Controller project is a [[maximum power point tracker]].

(2) The [[MPPT Solar and Wind Power Boost Charge Controller]] matches lower input voltages to higher 12v, 24v or 48v batteries using LTC3703.

Maximum power point tracking makes a solar panel, wind turbine, et cetera, achieve maximum efficiency.

=== [[Fridge Defrost Timer with Solar Trigger Option]] ===
The [https://vimeo.com/177809415 project video] shows a fridge timer which can be set to defrost on sunny days so the defrost cycle never uses valuable battery power on cloudy days. It is switchable to act like a regular defrost timer for long cloudy stretches of time, like winter.

=== [[Solar panel rotator motor power with auto-shut-off]] ===
The [https://vimeo.com/48903056 project video] shows a way to power solar panel rotator motors from a solar panel, supplemented by a walladapter.

=== Bioengineering Photovoltaic Semiconductors within a distributed-source 3D-printing system & project  ===

My "GNU Organic Photovoltaic" project to use Synthetic Biology and Open Manufacturing towards freely-distributable organic, thin-film solar panels printable with RepRap: http://openwetware.org/wiki/User:Giovanni_Lostumbo#Technical_Synopsis.

=== [[Sun Tracker or Irrigation Timer to drive motors]] ===
This is using two LEDs to sense the sun and send power to satellite arm motors to turn solar panels toward the sun. You could also use this to turn on an irrigation motor for a very short time every several hours.

== Scoring Machine for Fencing ==
This is an open source hardware and software design for a 3-weapon (foil/epee/sabre) scoring machine.  Scoring equipment need not be expensive & should be made affordable & accessible to anyone wishing to enjoy the sport of Fencing. Members are urged to submit any new design contributions to this group & to the GNU. All firmware and schematic updates are secured under the GPL agreement. For complete design details see [http://ca.groups.yahoo.com/group/GNU-GPL-3WT/ Join the GNU-GPL-3WT "Open Source Fencing Machine" forum].

Eric Schlaepfer.
[http://www.sonic.net/~schlae/gplscoremach.html "The first open-source scoring machine for the sport of fencing"].

== Open Source Disability Gadgets ==

* "Gear and software for people with disabilities is usually ... hard or impossible to repair it, or get anyone to repair it. We need to hack the model for accessibility tools! With a culture of open source designs, Instructables, wikis, and blogs" -- [http://panelpicker.sxsw.com/ideas/view/1745 Open Source Disability Gadgets: DIY for PWD]
* "Bionic feet becoming reality"[http://blog.makezine.com/archive/2010/02/bionic_feet_becoming_reality.html]
* [http://openprosthetics.wikispot.org/Open_Myoelectric_Signal_Processor Open Myoelectric Signal Processor] on the [http://openprosthetics.wikispot.org/ Open Prosthetics Project Wiki] -- is this the same as the "myopen" project at Google Code[http://code.google.com/p/myopen/] ?
* Is it possible to print a prosthesis with RepRap?[http://forums.reprap.org/read.php?88,42407]
* Bryan Jackson[http://reprap.org/wiki/User:Bryanandaimee] mentions that Doug Bell is helping They Shall Walk build a RepRap. http://TheyShallWalk.org/
* RepRap forums: Wrex 3D Printed Prosthetic "Magic Arms"[http://forums.reprap.org/read.php?1,145827]

== µWatch ==

* [[uWatch]] aka [http://www.calcwatch.com/ µWatch]: World's First D-I-Y Scientific Calculator Watch

== Open Source Circuits Magazine ==
Defunct website.

- Anykits publishes an open source magazine with quite a few, application oriented circuits. It contains schematics, parts list and PCB illustrations.
The best part is that its formated for print and available as regular PDF.

== [[vehicle]]s: manned and unmanned ==
Lots of [[vehicle | vehicle-related projects]] -- for motorcycles, automobiles, and unmanned aerial vehicles (UAVs).
== Telephony ==

=== [[Open Mobile Gadgets]] -- open source, open hardware, open mobile phones ===

* [http://www.openmoko.org Openmoko] An open source, open hardware mobile phone running Linux and other free software, actively developed by community. CAD files and schematics included.
** [http://wiki.openmoko.org/wiki/Neo_1973 Neo 1973]
** [http://wiki.openmoko.org/wiki/Neo_FreeRunner Neo FreeRunner] currently in the market

*[http://en.qi-hardware.com/wiki/Ben_NanoNote NanoNote] open hardware project, mini pc. 

* [http://openpandora.org OpenPandora] an open source mobile device with 10 hours runtime game pads, qwerty, and touchscreen. dual sd slots.

=== Phone line relay controller with PIC16F84A - single relay ===
* [http://www.elektronika.ba/507/phoneline-controller-v1/] controll one relay over phone-line. Uses PIC16F84A and MT8870.

=== Phone line relay controller with PIC16F876A - 6 relays! ===
* [http://www.elektronika.ba/508/phoneline-controller-v2/] controll up to 6 relays over phone-line. Uses PIC16F876A and MT8870.

=== [[Cellular Rotary Phone]] ===
An indepth breakdown of the Port-O-Rotary. Some clues to help you avoid audio problems with the GM862.

=== Free Telephony Project ===

[http://www.rowetel.com/ucasterisk Free Telephony Project]

* Embedded Asterisk IP-PBX hardware and software

* Low cost, completely open IP-PBX hardware including FXS/FXO analog and E1/T1 interfaces, and DSP motherboard hardware.  Target price of $100 for a 4 port IP-PBX.

[http://openusbfxs.wordpress.com/ Open USB FXS]
* An open, inexpensive Foreign Exchange System design with a USB interface. A small board based on a Microchip PIC 18F2550 microcontroller (to handle USB) and a Silicon Laboratories Si3210 chip (complete SLIC codec for microphone and speaker; also generates the high-voltage to ring the bell). You plug an ordinary analog telephone into the RJ11 jack on the board, and plug the board into a USB port on a Linux computer running Asterix.

==Homemade MIDI turntable==
Cheap and simple homemade MIDI turntable with GPL2 license. Using a ATmega, a HDNS-2000 optical mouse encoder, GCC-AVR, AVR-Libc and FreeRTOS. [http://casainho.net/tiki-index.php?page=Homemade+midi+turntable Homepage of Homemade MIDI turntable].

== Motherboards that Run Linux ==
See [[Motherboards that run Linux]].

There are many fascinating and surprisingly small boards that are capable of running Linux.
Some of them -- such as the [[Linuxstamp]], the [[Elphel camera]], the Balloon board, LART, etc. -- are open hardware.

== Gaming consoles ==
* [http://ladyada.net/make/fuzebox/ Fuzebox: Open source 8-bit game console]; see also the [http://uzebox.org/wiki Uzebox project wiki].
* [http://openpandora.org Pandora] Gaming handheld console running Linux and native or emulated games.
* XGameStation: "retro-inspired educational video game console designed specifically for both hardware and software hackers."[http://www.gamasutra.com/php-bin/news_index.php?story=11835] (Is this Open Hardware?)
* [http://forum.xbmc.org/showthread.php?tid=198296 "Open source hardware for retro game player"] ???

Several open-hardware projects may be relevant as part of a game, such as:
[[multi-touch display]]
[[motherboards that run Linux]]

== [[Music Player]]s including MP3 players ==

* [[TRAXMOD]] Open source MOD music player for dsPIC/ARM microcontrollers.

* [[Music Player]] Mostly off site.

* [http://www.andyolivares.com/?page_id=6&lang=en Andy MP3 Player] PIC & VLSI's VS1011e based MP3 player with documentation in english/spanish.

== radio projects ==

=== FM radio with Arduino and Nokia 3310 LCD ===
I have interfaced the single chip based FM stereo radio IC TEA5767 with the Arduino microcontroller and a Nokia 3310 LCD. Full source code and schematics are avaiable at [http://kalum.posterous.com/] .

=== FM Transmitters ===

* [http://anarchy.translocal.jp/radio/micro/howtotx.html Simplest FM Transmitter] - Very simple circuit by sound artist Tetsuo Kogawa.
** [http://www.openthing.org/products/niftymitter Niftymitter] - Open source product design based around the Simplest FM Transmitter. 

* [[88-108MHz FM transmitter circuit]]

=== Sort-of-Networked [[RFID Reader]] ===
A 125Khz RFID Reader with a simple ring network - to allow connection of multiple units to the same control computer.

=== [http://www.raccoonrezcats.com/rfdisplay.html RFDISPLAY - A Scrolling Display with RF connection to a PC - DEAD LINK] ===

POV scrolling display with an RF connection to a mini-itx computer and weatherstation.  Project is built out of 384 discrete red LEDs.  Display shows time and date, sunrise/sunset time and outdoor/indoor weather.  

Schematics, Board Layouts, and MPLAB C18 firmware source code is provided.

=== [http://www.raccoonrezcats.com/rfmodem.html PINGPONG-CDC : A Homebrew USB FHSS RF Modem ] ===

The PINGPONG-CDC project is a homebrew USB frequency hopping spread spectrum RF modem ([[FHSS]]).  The modem is based on the Microchip 18F2550 and the Semtec XE1205 RF module.  The module does not include a MAC or protocol layer.  That is what this project implements.  The project demonstrates how to write a FHSS MAC layer and use USB to interface it with a PC through CDC and WinUSB.
Since the protocol is not hard-wired, it is easy to change the software to experiment with different protocols.
A utility for pairing and configuring modems is included.  The schematic, firmware, and host C++ software is provided.

=== [http://www.raccoonrezcats.com/rfethernet.html XE1205-RNDIS : FCC Legal Frequency Hopping Spread Spectrum USB Wireless Ethernet ] ===

This is the PINGPONG-CDC project that emulated ethernet through the RNDIS driver in Windows rather then a serial cable replacement. Full source code is provided.


=== OpenFHSS An open hardware frequency hopping modem design ===
* [https://sourceforge.net/projects/openfhss/ "https://sourceforge.net/projects/openfhss/"]

    * High Performance, Long-Range Frequency Hopping Spread Spectrum Modem
    * Synchronous, Multi-Hop Repeater Chains
    * Ethernet Bridge Mode
    * Ethernet communications over 50-channel RF Link
    * 4uA MCU initiated sleep current
    * 2ppm frequency and system timing reference.
    * Industrial quality enclosure, connectors
    * Real-Time Data Collection System with user defined scripts
    * LM3S6965 32-Bit Stellaris ARM-core MCU, CC1101 transceiver, CC1190 LNA/PA
    * Highly immune to multipath fading, interference
    * 5mS Channel Dwell Time

=== [[Wireless remote switch, button press: 1 second=ON, 3 seconds=OFF]] ===
A $4 transmit/receive postage stamp pair of boards are used to control a remote switch by push button; once-ON, HOLD-OFF. 

== Serial Communication Protocols ==

=== [[PG31 GPS RS232 Dev Board]] ===
A simple RS232 example project that takes 3.3V TTL serial and outputs to a super-common RS232 connection. Insto-NMEA!

=== [[PG31 GPS USB Dev Board]] ===
A great example project using the CP2102 USB to TTL UART IC as well as some basic battery holder info.

=== [[RS232 Dev Board]] ===
A simple RS232 example project that takes all the power it needs from the serial port. Use it to power your microcontroller and communicate between serial port and microcontroller.  Takes advantage of the fact that pc serial ports will accept 0-5V rather than the RS232 standard of around negative 10V to  positive 10V.  Very convenient - no external power required!  Note that you may use either a 5.1V Zener or a 5V regulator.

=== [[RS232 RS485 USB Converter Board]] ===
Aim to build a general Converter between different Interfaces.

== [[Chalk Roach|Number Six]] ==
"#6" (the son of Chalk Roach)
is a ultra simple microcontroller development board for Atmel ATmega32 = 16MHz, 2KB SRAM, 16KB Flash

== LED and POV displays ==

Led displays range from a battery and an LED which light up ( cool!, add a magnet and you have an led throwie ) to microcontroller led projects, either Smart Led ( Led with a microcontroller so that it blinks, reacts to the environment, or shifts color ) or Led Arrays ( or led matrix ) that do simple graphics and or play games, or POV devices where what you see depends upon you persistance of vision ( which can include some led arrays ).  You can probably dig up more using these terms in google.

==== Our Own Projects ====

* [[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.
* [[POV display]] that spins around, giving the illusion of a large display. ([[User:DavidCary|DavidCary]])
* [[PointLess LED Array]] A 8 by 8 array displays something using POV ([[russ_hensel]])
* [[PIC Links]] and search on POV and/or LED

==== Off Site ====

* [http://code.google.com/p/bicycleledpov/ Bicycle LED POV] is an electronic LED bar to attach on bicycle wheels. When riding the bicycle, the LED bar will draw with light, text messages and image animations. Free/Open hardware, firmware and software.
* [http://www.makezine.com/blog/archive/2007/03/luscious_electric_delight.html "luscious electric delight"]: source and schematics for a large graphical LED panel. Uses 12 MAX6953 LED drivers; each MAX6953 drives four 5x7 led matrices. The PC generates arbitrary bitmap, sends it out the serial port to a PIC, which translates it to I2C bus connected to all the MAX6953 LED drivers, which update the image at a continuous frame rate of 30fps.
* [https://oldwiki.blinkenarea.org/bin/view/Blinkenarea/BlinkenProjects BlinkenProjects]: projects with lots of LEDs[http://www.kiu.weite-welt.com/de.schoar.blog/?p=206], including a 3D LED array. Wiki: http://wiki.blinkenarea.org/
* [http://www.ianpaterson.org/projects/spokepov20050704/index.htm  Ian’s Spoke POV] Review it.
* [http://www.electric-clothing.com/superpov.html Project: Super POV] Review it.
* [http://www.ladyada.net/make/spokepov/index.html SpokePOV Persistence of Vision for your Bike] Very nice, kit available.
* [http://www.attiny.com/dotmatrix.htm On this page you will find a scrolling LED sign based on the ATtiny2313 AVR microcontroller] Row Column approach with a shift register]
* [http://blog.makezine.com/archive/2007/02/flashing_led_br.html Flashing LED Bra]
* [http://www.evilmadscientist.com/article.php/peggy "Peggy," A Light Emitting Pegboard Display]
* Christmas trees are now led based so: [http://computerchristmas.com/ The #1 Site for Controlling Christmas Lights with a Computer]
* [http://members.misty.com/don//ledx.html Don Klipstein's LED Main Page]  Lots of good info.
* [http://www.instructables.com/id/Synchronizing-Fireflies/ Synchronizing Fireflies] ATtiny super smart swarm of LEDs.
* [http://www.u-disp.com/ U-Disp - An Open Sourced USB display]
* [http://crushingabyss.com/sunrise_alarmclock/index.html Sunrise LED Alarm Clock] ATMega8515 controlling two color-mixed high-power LED channels with PWM.  Also contains a RTC circuit and a serial port.  Full source including PC Windows serial port communication code.
* [http://dotmatrixdesign.tumblr.com/ dotmatrixdesign: Twitter LED Scroller Build Log]: an Arduino shield for a 7x5 LED matrix, and all the schematics, board layouts, Arduino firmware, and PC software to make it scroll text from a Twitter feed.

== [[Das Brewmeister!]] and [[Fermenter Controller]] ==
* [[Das Brewmeister!]] : An attempt to wirelessly monitor temperatures of fermentation vessels
* [[Fermenter Controller]] : A web available fermenter vessel controller. Uses PICs, [[I2C]], Rs232 and python.

== [[Home controller]] ==
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.

== [[Interactive Lock Box]] ==
An interesting project using an accelerometer and capacitive touch ICs.

== [[Motor driver]] (H-bridge) ==

== [[atomic microscope]] ==
An atomic-resolution microscope.
* STM (scanning tunnelling microscope)
* AFM (atomic force microscope)

== [[BlueICE]] ==
A bluetooth JTAG ICE debugger for AVR's!!!


== Battery charger ==

See [http://elecdesign.com/Article/ArticleID/1823/1823.html "Build A Smart Battery Charger Using A Single-Transistor Circuit"] by Ejaz ur Rehman.
But be sure to read the "Reader Comments" at the end.
The suggestion to add a zener diode is a good idea.

== the Open Graphics Project ==

[http://linux.wordpress.com/2006/07/19/introducing-the-open-graphics-project/ the Open Graphics Project]
a project started by chip-designer Timothy Miller.
His goal, along with the rest of the project, known as the “Open Graphics Foundation” is to make a 3D accelerated video card which is fully documented, free-licensed, and open source.
See [http://wiki.duskglow.com/tiki-index.php?page=Open-Graphics the Open Graphics wiki].

== [[Amiga floppy project]] ==

The Amiga floppy project:
designing, building, and programming an adapter to allow PCs to read from Amiga floppies.
"This is really designed to be a community project(hence the blog with progress reports)."

This project is the building of an external USB amiga floppy drive controller.  It sits between the USB port on a Windows PC, and a regular PC floppy drive.  It will allow the PC to create .ADF images from an amiga floppy disk.  This device is based on a Parallax SX28 microcontroller, uses Ramtron FRAM memory for temporary track storage, and uses another Parallax component for the USB interface.

See http://www.techtravels.org/amiga/amigablog for the latest in the blow by blow attempts to get this thing off the ground!!

== Irsensor-a ==

Infrared Proximity Sensor Alfa
[http://www.kedo.com.mx/modules/content/index.php?id=3 Infrared Proximity Sensor Alfa in www.kedo.com.mx]

The Infrared Proximity Sensor Alfa is a sensor to detect objects that can reflect infrared light.  It has the following characteristics.
* Designed to detect objects that are close and can reflect infrared lights.
* It has a Infrared Transmitter to eliminate the dependency of solar lighting.  So It can be used in the night.
* It has a Infrared Receiver that detects the closest object that reflects the infrared lights.
* It has an incorporated voltage regulator
* The output is a constant 5V when it is active and 0V when no detection.
* You can change the proximity threshold with a potentiometer.

== [[Multi-purpose Embedded System]] ==

*This project intends to provide ideas and technical information to create a multi-purpose embedded system. 
**Information contained in this wiki should be as generic as possible (unless otherwise stated) so that the ideas and information can be portable to different hardware (e.g. 8-bit/16-bit/32-bit MCU). 
**The peripheral devices should be expandable

== [[DsPIC30F 5011 Development Board | dsPIC33 Development Board]] ==
A development board using Microchip dsPIC33, a 3.3V based 16-bit microcontroller with DSP functions, EEPROM, ADC, PWM and communication ports of UARTs, I2C, SPI etc. Contains concise information on:
#Development environments (IDE)
#External programming methods (ICSP Programming using ICD2 Programmer)
#Bootloader implementation (RTSP)
#Software development tips based on POSIX concepts

==[[ADuC832 Development Board]]==
[http://chungyan5.no-ip.org/vc/linlike8/tags/0.04.04/arch/51family/examples/di_do_ai_ao/AltiumDesigner6ProjectFiles.zip?root=freertos_posix&view=log AltiumDesigner6ProjectFiles]

== [[Ethernet Module]] ==

*This project aims to develop an Ethernet Module, to be used in conjunction with a 8/16 bits embedded system such as the [{{SERVER}}/Projects#dsPIC30F_5011_Development_Board dsPic33F development board].

== [[MMC Card Reader]] ==

*This project aims to develop an MMC Card Reader, interfacing with a 8/16 bits embedded system such as the [{{SERVER}}/Projects#dsPIC30F_5011_Development_Board dsPic33F development board].

== [[Modulation Plugin]] ==

*This project aims to develop an Modulation Plugin Module, to be used in conjunction with a 8/16 bits embedded system such as the [{{SERVER}}/Projects#dsPIC30F_5011_Development_Board dsPic33F development board].

== Scavenge ==

Some people derive an inordinate amount of pleasure from building semi-useful objects from zero-cost junk.

In the electronics field, the most popular 2 categories of things to build from scavenged components are:
* ham radio transmitters and receivers -- built from a few transistors, caps, resistors, and wire
* BEAM robotics -- built from the above plus motors, solar cells, ...

Other things to build and tips on scavenging at [[Free_From_Salvage]].

=== openEyes ===
openEyes is an open-source open-hardware toolkit for low-cost real-time eye tracking.
See [http://hcvl.hci.iastate.edu/cgi-bin/openEyes.cgi the OpenEyes hardware and software] and [http://hcvl.hci.iastate.edu/cgi-bin/openEyeswiki/index.cgi the openEyes wiki].

updated [http://thirtysixthspan.com/openEyes/videos.html link]

=== RepRap ===
RepRap is an open source project to create a 3d printer or fabber machine.  There is tons of information available on [http://www.reprap.org its website].  The current iteration is a 3 axis cartesian robot with 2 extruder heads:  a Thermoplastic head that extrudes plastics like HDPE, ABS, and CAPA, and a support material head that extrudes a water soluble material to support the build process.

The [http://burningsmell.org/biollante/ Biollante project] is a kind of RepRap that uses a 6 axis Stewart platform.
Can devices from a [http://kmoddl.library.cornell.edu/ mechanical model library] be fabbed with RapRap?
The article [http://ccsl.mae.cornell.edu/papers/Nature05_Zykov.pdf "Self-reproducing machines"] goes even further than just 6 identical parts -- it suggests that "self-reproducing machines composed of many identical microscale modules" may be a better design than the original RepRap design where just about every part is unique.

"This is the meta-problem of engineering: Design a machine that can design other machines." -- Hod Lipson[http://www.mae.cornell.edu/lipson/]

Other open hardware 3d printing projects:
* [http://www.boingboing.net/2009/04/09/homemade-3d-printer.html BoingBoing: "Homemade 3D printer goop made from maltodextrin costs 1/50 of the real stuff"] by Cory Doctorow 2009; more details discussed at [http://groups.google.com/group/openmanufacturing/browse_frm/thread/69dca8583f4fdd18 Open Manufacturing: "3-D printing hits rock-bottom prices with homemade ceramics mix"]

=== TwentyDollarWikiDevice ===

Challenge: Build a Wiki Device with a parts cost of no more than twenty dollars which is usable as a portable wiki. Include feature to make it compatible with a desktop or laptop computer's PersonalWiki, with a connector allowing this use.
--
http://c2.com/cgi/wiki?TwentyDollarWikiDevice

"hardware portable wiki for taking notes with an auto-merging functionality when you are very close to Internet or your computer."
--
http://communitywiki.org/AlexandreDulaunoy

Could you maybe build it out of a "$12 Computer" ? "$12 Computer: Playpower Wants to Save the World 8 Bits at a Time"[http://blog.wired.com/gadgets/2009/03/12-computers-ba.html]

How close is the [http://scanlime.org/2011/07/kiwi/ Kiwi project] to acting like such a "wiki device"?

=== [[breakout boards]] ===
These are three boards that I designed for a specific project and found them very useful. Each of these boards uses the phoenix contact plugable terminal blocks. The 50-pin breakout board is for a 50-pin ribbon cable. The LEM breakout board is for LEM AC/DC current sensor. The power supply breakout board is for a +5v +/-15v power supply.

=== Eyes for Open Robot ===

* [http://www.sparkfun.com/commerce/product_info.php?products_id=637 $20 CMOS Camera Module - 640x480] has a [http://forum.sparkfun.com/viewtopic.php?t=2442 "Get-that-camera-working competition" discussion forum] and [http://www.makezine.com/blog/archive/2007/01/hack_this_cmos.html now been adequately documented] ... http://elinux.org/wiki/SparkfunCamera ... [http://forum.sparkfun.com/viewtopic.php?t=2442&postdays=0&postorder=asc&start=135 by David Carne].

* ... perhaps simpler to use an off-the-shelf webcam that plugs directly into a laptop ... [http://www.linux.com/howtos/Webcam-HOWTO/hardware.shtml Enabling Support for Your (Webcam) Hardware in Linux] ... [http://www.saillard.org/linux/pwc/ Philips USB Webcam Driver for Linux] ... [http://qce-ga.sourceforge.net/ QuickCam] ...

''Is there a simple way for my Java application to fetch the latest camera image in an Array of pixel values?''

* [[OpenHDCapture]]: capture (analog) High Definition Video 1280x720 at 30fps, and convert to some digital format to stream over USB. (Rather than a lot of expensive electronics to directly produce tightly compressed video, it has very little compression to reduce the cost of the hardware and the amount of CPU effort to uncompress it while watching live video).

=== robot ===

* open architecture humanoid robotics platform --[http://www.is.aist.go.jp/humanoid/openhrp/English/indexE.html OpenHRP]
* the open hardware, open source, [http://en.wikipedia.org/wiki/E-puck_mobile_robot e-puck mobile robot]

== [http://www.remember.ro/scripts/wiegand.php Wiegand reader simple controller] ==

The PICmicro 16F628 decodes [http://en.wikipedia.org/wiki/Wiegand_protocol Wiegand protocol] coming from card reader.
If the card matches one of the 40 cards in EEPROM, it turns on the light (opens the door).
Schematic and source code published under GNU terms.

== [http://www.rcrowley.com/ComClone/default.htm ComClone2 Intercom] ==

ComClone2 is a DIY clone of the industry-standard "party line" production intercom system as first introduced by Clearcom and now sourced by many other vendors.  This intercom system is widely used in both live show(theatrical, music, etc.) and video production. Website provides complete construction information including PC board, etc.

== Minimig ==

[[Minimig|Amiga 500 implemented]] with Xilinx FPGA + Freescale mc68000

== [http://www.raccoonrezcats.com/soundcard.html USB Audio Streamer : A Homebrew USB Soundcard ] ==

This project is a homebrew 12bit 24KHz homebrew USB soundcard based on a pic 18f2550 and a few Microchip analog parts.
The project is based on the Microchip USB framework, but the core audio processing is written from scratch.
The card is a duel Audio 1.0 + generic interface composite device with the generic interface being handled by WinUSB. 
The schematic, card firmware, and host C++ software is provided.


== An acceptable third generation PostScript printer ==

"Ask the Guru: A Third-Generation Printer"
article by Don Lancaster 1990
http://www.tinaja.com/glib/guru60.pdf
lists specifications for
"An acceptable third generation PostScript printer."
Would this be a good "open hardware" project ?


== the [[Kestrel]] ==

The Kestrel is a grass-roots computer design employing half-way modern technology, where *EVERYTHING* is documented openly.
Other goals:
Instant on, (nearly) instant off.
Fun to build.
Fun to use.
Fun to expand.
The creation of a vibrant and healthy user and developer community, capable of supporting itself on both software AND hardware fronts.

== [[astronomy]] ==
A variety of "open" tools for optical and radio astronomy.

== flash downloaders ==
Many people have published open-hardware schematics for downloading programs into the flash of various microcontrollers. [http://m8cutils.sourceforge.net/ m8cprogs for Cypress PSoC], [http://techref.massmind.org/techref/devprogs.htm various flash downloaders for Microchip PIC], etc.

== Open Source USB programmer==

Open Programmer is an open source USB programmer for PIC micros, ATMEL micros, I2C EEPROMS, generic I2C/SPI devices. It's based on a 18F2550.
[http://openprog.altervista.org/ Open Programmer home page].
<br>
Usbpicprog is another open source USB pic programmer for PIC 10F, 12F, 16F and 18F devices, for Windows Mac and Linux
[http://usbpicprog.org/ Usbpicprog]


== [[WikiNode]] ==
The WikiNode project tries to link every wiki in the world together.
Our "[[WikiNode]]" links to closely-related wiki (and their WikiNode links back).

If you want to talk about something that is not quite on-topic here at Open Circuits
(say, "desktop PC case modding", or "embedded Linux programming"), our WikiNode helps you find another wiki where people love to talk about that exact topic.
The corresponding WikiNode on each of those wiki helps people who want to talk about "open hardware" to discover this wiki.

== Clocks ==

*[[Arm7OledClock]]:
arm7-oled-clock is a clock hardware/software project for a clock with a graphic organic led display running on an atmel arm7 microcontroller.

Here is the [http://code.google.com/p/arm7-oled-clock/ arm7-oled-clock's project page on google code].

*[[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.

*[[TideClock]]:
Tide Clock uses the low-power [[Linuxstamp_II_9260 | LinuxStamp]] board (another OpenCircuits project) to calculate daily tides at almost any location. Tide predictions are displayed on a bar graph using 12 motorized lead-screws to move the 'bars'.

== Sun SPOTs ==

[http://www.sun.com/ Sun Microsystems] has open sourced both hardware and software for the [http://research.sun.com/ Sun Microsystem Laboratories] Sun SPOT (Small Programmable Object Technology) Wireless Sensor Network. 

This Java-based system is an ARM920T 180MHz processor, 4Mbyte Flash, 512Kbyte pSRAM and  802.15.4 radio transceiver (TI CC2420). See the [http://www.sunspotworld.com/ Sun SPOT World] website for more information. We also have an active [https://www.sunspotworld.com/forums/ forum].

The hardware designs can be downloaded from [https://spots-hardware.dev.java.net/ https://spots-hardware.dev.java.net]. The content available for download (subversion) are the schematics (pdf, Altium), bill of materials (Excel), assembly drawings (pdf), fabrication drawings (pdf), PC design files (Altium) and gerber files (RS274X) for these boards.

The boards we have posted are:
* eDemo: Demonstration add-on board for the Sun SPOT. 
* eFlash: MiniSD card reader/writer add on board for Sun SPOT 
* eProto: Prototype board with simple interface to Sun SPOT 
* eProtomega: eSPOT Prototyping board with Atmega88 processor 
* eSerial: RS232 Serial interface board for the Sun SPOT 
* eUSB-Host: USB host interface to Sun SPOT 
* eDaq: Industrial strength ADC board
* eBones: Basic interface board application note
* eSPOT: Main Sun SPOT board

Our wiki for the hardware is [http://wiki.java.net/bin/view/Mobileandembedded/SpotHardware http://wiki.java.net/bin/view/Mobileandembedded/SpotHardware].

SPOTs run Squawk, an open source Java virtual machine (VM). The download (and more information) for Squawk is [https://squawk.dev.java.net/ https://squawk.dev.java.net/]. The SPOT specific libraries can be downloaded from [https://spots-libraries.dev.java.net/ https://spots-libraries.dev.java.net/] along with community applications [https://spots-applications.dev.java.net/ https://spots-applications.dev.java.net/]


== [[GPIB] General Purpose Interface Bus] ==

== SenseOpen ==

[[SenseOpen]],
an open-hardware, open source coffee machine hardware platform;
supporting
open source coffee machine software implementations.

== improved flashlight design ==

[http://www.discovercircuits.com/H-Corner/shake-chgr.htm "Shake to Charge Flashlight"] designed by David A. Johnson, P.E.
has a sketchy outline of an improved flashlight design.
[http://www.designnews.com/blog/Made_by_Monkeys/11508-Knock_off_Flashlight_Trades_off_Light_Intensity_for_Duration.php?nid=2321&rid=2902681 "Knock-off Flashlight Trades off Light Intensity for Duration"]
has some further comments.

One interesting idea: "... it might be powerful enough to charge up a dead automotive lead acid battery after a few minutes of string pulling to start a car.  Such a device might be small enough to fit into a car’s glove box ..."

== "Virtual" USB Keyboard/Mouse System ==

[http://russosv.info/w/usbtoserial "Virtual" USB Keyboard/Mouse System] - Use your laptop as a keyboard/mouse for another computer. "This project is a computer interface that will allow you to hook up your computer to another computer--for example, a "headless" computer-- as a USB device, and use your laptop as a keyboard/mouse on the other machine.

There are 2 mini-USB connectors on this device. One side plugs into your laptop, the other side plugs into the computer without a keyboard. You type on the laptop, and the results will appear on the other machine. It will require special software on the laptop-side, but the destination computer should not require special drivers."

== open source benchtop power supply ==

* [http://tuxgraphics.org/electronics/201005/bench-power-supply-v3.shtml "A Digital DC Power Supply (programmable bench power supply unit)"] by Guido Socher (uses ATmega8). It appears to use a completely linear regulator -- would it make any sense to convert this to a [[switching regulator]]?
* [[Tulsa electronics club]] mentions another "Bench-Top Power Supply".
* Guido Socher at tuxgraphics.org has posted schematics and source code ''(Is this close enough to [[open hardware]]?)'' to "A Digital DC Power Supply (programmable bench power supply unit)".[http://tuxgraphics.org/electronics/201005/bench-power-supply-v3.shtml][http://tuxgraphics.org/electronics/200707/bench-power-supply-unit.shtml]

== Simple projects with Arduino (Spanish) [[File:LogoPequenoNaranja.png|link=http://txapuzas.blogspot.com/]] ==
===Arduino clones===
* [http://txapuzas.blogspot.com/2010/07/paperduino-pcb.html PaperduinoPCB] Homemade Arduino (with PCB)
* [http://txapuzas.blogspot.com/2010/07/paperduino-perfboard.html PaperduinoPerfboard] Homemade Arduino (with Perfboard)
* [http://txapuzas.blogspot.com/2010/07/paperduino-stripboard.html PaperduinoStripboard] Homemade Arduino (with Stripboard)
* [http://txapuzas.blogspot.com/2010/07/cable-de-programacion-para-arduino-ftdi.html PaperFTDI] cable for programming Paperduino
* [http://txapuzas.blogspot.com/2009/12/alimentacion-para-paperduino-5v-12v.html AlimentacionPaperduino] Powering Paperduino
* [http://txapuzas.blogspot.com/2009/12/papershieldadapter-adaptador-de-shields.html PaperSchieldAdapter] a Shield adapter for Paperduino
* [http://txapuzas.blogspot.com/2009/12/paperbootloaderspp-grabacion-del.html PaperBootloader] Loading the Bootloader in Paperduino
* [http://txapuzas.blogspot.com/2009/12/paperattinyprogrammer-un-programador.html PaperATtinyProgrammer] Programmer Shield for ATtiny
* [http://txapuzas.blogspot.com/2009/12/paperrs232-convertidor-rs232-ttl-para.html PaperRS232] RS232 Adapter for Paperduino
* [http://txapuzas.blogspot.com/2009/12/paperduino-leonardo-clon-de-arduino.html Paperduino Leonardo] Homemade Arduino Leonardo clone
* [http://timewitharduino.blogspot.ca/2009/07/introducing-wiseduino.html Wiseduino] on-board RTC + battery backup and 32KB EEPROM

===Inputs===
* [http://txapuzas.blogspot.com/2010/07/pulsadores-para-microcontrolador.html PaperTecladoDigital] Homemade Keyboard for Arduino (using digital inputs)
* [http://txapuzas.blogspot.com/2010/07/papertecladoanalogico-varios-pulsadores.html PaperTecladoAnalogico] Homemade Keyboard for Arduino (using 1 analogic input)
* [http://txapuzas.blogspot.com/2010/09/papertecladorc-varios-pulsadores.html PaperTecladoRC] Homemade Keyboard for Arduino (using 1 digital input)
* [http://txapuzas.blogspot.com/2009/12/paperteclado-un-teclado-con-una-hoja.html 14 PaperTeclado] A keyboard with a printed paper
===Outputs===
* [http://txapuzas.blogspot.com/2010/07/rele-controlado-por-transistor.html PaperRele] Relay controlled by Arduino (with transistor)
* [http://txapuzas.blogspot.com/2010/09/micropaperrele-carta-de-reles.html MicroPaperRele] Relays controlled with Arduino (without transistor)
* [http://txapuzas.blogspot.com/2009/12/paperstepperunipolar-driver-de-potencia_12.html PaperStepperUnipolar] Driver for a unipolar Steppermotor (ULN2003)
* [http://txapuzas.blogspot.com/2009/12/paperstepperl293d-driver-de-potencia.html PaperStepperBipolar] Driver for a bipolar Steppermotor (L293D)
* [http://txapuzas.blogspot.com/2009/12/paperstepperl298n-driver-de-potencia.html PaperStepperBipolar-L298N] Power driver for a bipolar Steppermotor (L298N)
* [http://txapuzas.blogspot.com/2009/12/paperled-el-led-y-tarjeta-comprobacion.html PaperLED] The LED diode
* [http://txapuzas.blogspot.com/2009/12/clemarele-control-de-un-rele-sin.html ClemaRele] A relay for micro without pcb
* [http://txapuzas.blogspot.com/2009/12/paperdimmerldr-control-de-potencia-de.html PaperDimerLDR] Power Dimmer with a LDR
* [http://txapuzas.blogspot.com/2009/12/paperattinymosfet-control-de-velocidad.html PaperATtinyMosfet] DC motor control with an ATtiny
===CNC===
* [http://txapuzas.blogspot.com/2009/12/txapu-cnc-hardware.html TxapuCNC: Hardware 1/2] a CNC Router with Arduino 
* [http://txapuzas.blogspot.com/2009/12/txapu-cnc-software.html TxapuCNC: Software 2/2] a CNC Router with Arduino
===Robotics===
* [http://txapuzas.blogspot.com/2011/10/paperrobot-chasis-para-robot-con.html PaperRobot] A cheap Robot with Arduino

===Miscellaneous===
* [http://txapuzas.blogspot.com/2010/06/regulador-de-potencia-por-triac-para.html PaperDimmerPCB] Triac controled by Arduino
* [http://txapuzas.blogspot.com/2010/06/temporizador-con-retardo-en-el-arranque.html PaperTemp] Timer for our circuits
* [http://txapuzas.blogspot.com/2009/12/calc-resistencia-codigo-de-colores-de.html CalcResistencia] Color code carte for resistors
* [http://txapuzas.blogspot.com/2009/12/paperdiodo-teoria-del-diodo-y-diseno-de.html PaperDiode] The diode and a power supply
* [http://txapuzas.blogspot.com/2009/12/paperbluetooth-bluetooth-shield-para.html PaperBluetooth] Homemade Bluetooth shield for Arduino

== Pedal Desk ==

The pedal desk allows the user to power and use a laptop, or any other low power device, entirely off grid by pedal power.

The [http://mae.ucdavis.edu/~biosport/jkm/ped_desk.htm pedal desk design] is open source under the Creative Commons License.

== ViewTonic - a hologram in a drink ==

ViewTonic is a free open hardware and open source project about a volumetric display on low cost basis for home use.

The [http://viewtonic.wikia.com/wiki/ViewTonic_Wiki ViewTonic project] is open source under the Creative Commons License.

== OMFootCtrl - OSC and MIDI Pedals ==

[http://omfootctrl.sf.net OMFootCtrl] is an open source project for OSC and MIDI foot controllers.

== hardware random number generator ==

Several [[hardware random number generator]] projects are open source.

== pick and place ==

The two open-hardware pick-and-place projects I've heard about so far are:

* Peter van der Walt. open source pick and place machine.[http://dangerousprototypes.com/2016/04/01/new-design-open-source-pick-and-place-machine/] [https://openhardwarecoza.wordpress.com/2016/03/17/open-source-pick-and-place-machine/] [https://github.com/openhardwarecoza/PickAndPlaceMachine]
* Tim. open-source pick and place system. [http://reprap.org/wiki/Pick_and_Place_ToolHead]

== Public Lab ==

Many of the [https://publiclab.org/tools Tools & techniques developed by Public Lab contributors] have associated open hardware, including:

* [http://kaptery.com/product/skyshield-autokap-controller "SkyShield AutoKAP Controller"] "The SkyShield ... is an open-source custom circuit board which is a "shield" for an [[Arduino Links | Arduino]] Nano. ... With a connected camera ... e.g., a CHDK-enabled PowerShot ... you can capture aerial photos to stitch into high resolution panoramas ..."

* [https://publiclab.org/wiki/potentiostat The WheeStat] is an open source potentiostat. A potentiostat measures electrochemically active compounds and microbes in water.

* [https://publiclab.org/wiki/riffle Riffle: open source data logger].  . The Riffle board uses the Atmel328p and a [[MultiMediaCard | micro-SD card]] and is intended to be [[Arduino Links | Arduino]]-compatible. http://openwaterproject.io/ https://github.com/OpenWaterProject/riffle

* [https://publiclab.org/wiki/thermal-camera Thermal Flashlight]: a simple, cheap, and effective way of measuring heat leaks or cool leaks. Thermal photography using an [[Arduino Links | Arduino]], a single-pixel thermometer, etc. for an order of magnitude less cost than other thermal cameras.

* [https://publiclab.org/wiki/mae-d-agua Mãe d'Água]: open hardware to monitor water quality in real time.

* [https://publiclab.org/wiki/water-quality-sensor Water Quality Sensor]: an Arduino microcontroller, a set of water quality sensors, and a network connection module (a GSM based cellular module to send data via SMS).

* [https://publiclab.org/wiki/air-column-monitor Air Column Monitor]: a set of air quality sensors and a wireless RF module

* [https://publiclab.org/wiki/dustduino DustDuino]

* [https://publiclab.org/wiki/fido-the-raspberry-pi-based-temperature-alarm-that-sends-text-messages Fido]: The Raspberry Pi based Temperature Alarm that sends text messages

* [https://publiclab.org/wiki/balloon-telemetry-kit Balloon Telemetry Kit]: Arduino Uno, GPS receiver, barometric sensor, three-axis accelerometer and data logger.

* etc.



== Audio as sensor data format ==

Open-hardware projects that use human-audible sound to transfer sensor data:

* [https://publiclab.org/wiki/coqui Coqui]: a simple, inexpensive, open source device that generates an audible tone that is based on any electric resistance-based measurement.
* [http://reprap.org/wiki/Hot_Rod_ROBO Hot Rod ROBO]: a distributed control system and audio format, simple enough to be implemented on a ATtiny85 that (bidirectionally) connects hardware to the audio jack of a cell phone.

== Other Lists of Semi-Open Projects ==

* [http://dorkbotpdx.org/wiki/creative_commons_licensed_circuit_boards more Creative Commons licensed circuit boards]
* [http://www.parallax.com/support/open-source-designs "Parallax Open Source Designs"] includes open-source hardware like "Parallax Printed Circuit Board Hardware Designs" and the Propeller 1 Verilog files.
* [http://code.google.com/p/super-osd/ Super OSD] is an on screen display generator; it adds text to PAL and NTSC video signals. Automatic detection of input video signal format (PAL or NTSC). Currently supports 192x128 outlined OSD on a dsPIC33FJ128GP802 (can be prototyped on a breadboard in a DIP28 package.) [http://electronics.stackexchange.com/questions/6078/have-a-look-at-my-pcb-design-and-tell-me-how-i-can-improve]. Open software and open hardware. (Apparently there are two supported boards, one with a dsPIC33F and a PIC24F, another with two PIC32 microcontrollers).
* UHF FM BUG with ButtonCell battery ( http://www.elektronika.ba/408/fm-bug-420-480-mhz/ ) "This bug is 100% made from an old Nokia GSM phone! It operates at 434 MHz and reception can be achieved on a modified TV tuner or 70cm band HAM radio."
* [[demo board]] and [http://massmind.org/techref/microchip/alternatives.htm microcontroller alternatives] lists a bunch of "small PCBs" (is there a better name?) designed for hacking and prototyping, that already have the processor and a few other super-common things built in ... so you don't have to start *completely* from scratch.
* [http://thinkcycle.org/ ThinkCycle] "ThinkCycle is a ... non-profit initiative ... supporting distributed collaboration towards design challenges facing underserved communities and the environment. ThinkCycle seeks to create a culture of open source design innovation"
* Are [http://positron.org/projects/ the Positron projects] "open" enough to be mentioned? I especially liked the [http://positron.org/projects/acrylic_cases/ "Lasercut Acrylic Casebuilding Tutorial" ].
* Is [http://wiki.vislab.usyd.edu.au/moinwiki/PuckControl/BuildingThePuck the Vislab puck] suitable for this list?
* [http://massmind.org/techref/piclist/pcbcontest.htm  PICList & JAL_List free PCB contest] "this will encourage people to publish designs and get more good ideas out into the real world for everyone to see." (So, are these "open" circuits?)
* http://ePanorama.net/ has a bunch of schematics and a web discussion forum. Are they "open" enough to mention here?
* "Yet Another One-hand Keyboard" ( http://chordite.com/ ) "The firmware included in the download lets an Atmel AVR '2313 microcontroller interpret chords and talk to a PS/2 port." -- it's not completely open, but the license allows you to immediately download, for free, lots of technical information and a license to build up to 5 of your own. Building more than 5 requires some sort of payment to license the patent on the hardware configuration. (The software appears to be open source). There seems to be an associated Yahoo mailing list. What is an appropriate way to invite John W. McKown and others on the mailing list to use a wiki such as Open Circuits to maintain a FAQ?
* [http://www.solorb.com/elect/ FC's Electronic Circuits] ?
* [http://panvent.blogspot.com/ "Pandemic Ventilator Project"] asks: "Does Open Source Hardware Development Work?"
* GSM SMS Controllers ( http://www.elektronika.ba/503/gsm-controller-v2/ ) "TwoWay Thing (GSM Controller v3) is a device that allows you to control appliances using SMS messages. There are also 4 inputs for connecting sensors so the device will send an alarm SMS or even call you to report an alarm condition. The device draws very little current and is being powered by phone’s battery which is a great thing. Nokia should be constantly charged or supplied with some sort of external power for long term operation."
* Phone-call alarm alert ( http://www.elektronika.ba/505/phone-call-alerter/ ) "After programming just supply power to the device. After pressing the button "Pokreni dojavu alarma" it will start to dial (tone or pulse, depending on the jumper setup). When the phone call is succesfully established, the called party should press pound key "#" to stop the device from calling another number or again."
* SMS Box ( http://www.elektronika.ba/563/sms-box-project/ ) "This device acts as interface between your microcontroller project and a GSM phone. It handles all modem data communication between the GSM phone and your micro-project. The best thing is that it decodes PDU into TEXT on the fly!"
* GSM alarm alert - call ( http://www.elektronika.ba/501/gsm-alarm-caller/ ) "Alerting alarm over via GSM network"
* [http://linuxdevices.com/news/NS3871478989.html Bug Labs]: A startup is readying a modular, open source hardware/software system resembling a set of electronic Legos. Nov. 05, 2007 [http://www.buglabs.net/]
* [http://picflow.sourceforge.net/ PIC flow meter and instrumentation modules]: Sensors, Gauges, Flow meter, data logging, connected by Grundfos Pumps inc. GENIbus over RS485.
* Raphaël Assénat has [http://raphnet.net/electronique/electronique_en.php posted several electronics projects], including schematics. Several of them involve interfacing various "classic" video game controllers to USB. His [http://raphnet.net/electronique/cid/cid_en.php "Caller Id decoder"] is a nice example of adding just one more feature to something using a minimum of additional electronics.
* [http://www.grandideastudio.com/portfolio/defcon-15-badge/ Grand Idea Studio] -- do these badges count as "open circuits"?
* [http://www.boingboing.net/2009/04/09/howto-set-up-a-molec.html "HOWTO set up a molecular biology lab for less than $1000"] Posted by Cory Doctorow 2009

* [http://www.ethernut.de Tiny Embedded Ethernet Devices] and [http://www3.elphel.com Advanced & Intelligent Camera Designs] which provide solid-state camera and FPGA assisted hardware designs.

* overview of projects can be found at [http://open-innovation-projects.org/project-list/ Open Innovation Projects].


== [[Other Projects | other project sites or links to projects]] ==

May or may not be open, not much review material here, noted for the record, may be promoted in the future if they are outstanding in any way.

* Creating embedded system based [http://www.embeddedravi.com/forum/viewtopic.php?f=2&t=12 virtual Text Display] 

* Free Electronics mini projects [http://romux.com/projects/electronics here] 

* [http://timewitharduino.blogspot.ca/ Arduino clocks]

* [[cooling]] related projects (open source Peltier fridge, etc.)

* "EFF: Calling All Hackers: Help Us Build an Open Wireless Router"[https://www.eff.org/deeplinks/2014/07/building-open-wireless-router] (Is there any hardware here, or is this entirely software?)


[[Category:Projects| ]]