ergodox-firmware/doc/references.md

## Noob Electronics Stuff

* [Resistor Color Codes (picture)]
  (http://www.ladyada.net/wiki/lib/exe/fetch.php?hash=a2c6a9&w=501&h=785&media=http%3A%2F%2Fwww.ladyada.net%2Fimages%2Fmetertutorial%2Frescolorcode.jpg)

	* from [the Multimeter Tutorial]
	  (http://www.ladyada.net/learn/multimeter/resistance.html)
	  (on <http://ladyada.net/>)

* [Very Basic Circuits]
  (http://www.seattlerobotics.org/encoder/mar97/basics.html)
  : column by Kevin Ross for Encoder

* [Powering Light Emitting Diodes(LEDs)]
  (http://wolfstone.halloweenhost.com/Lighting/litlpo_PoweringLEDs.html)

	* can also be reached via <http://thewolfstone.com/>
	  -> [ENTER] ('http://thewolfstone.com/Welcome/Home.html)
	  -> [Wolfstone's Haunted Halloween Page]
	     (http://thewolfstone.com/_ar/Halloween.html)
	  -> [technology]
	     (http://wolfstone.halloweenhost.com/Navigation/TechBase.html)
	  -> [powering LEDs]
	     (http://wolfstone.halloweenhost.com/Lighting/litlpo_PoweringLEDs.html)


## Noob C Stuff

* [C Library Reference]
  (http://www.cplusplus.com/reference/)
  (on <http://cplusplus.com>)

* [C Operators/Expressions]
  (http://www.lix.polytechnique.fr/~liberti/public/computing/prog/c/C/CONCEPT/expressions.html)
  (on <http://www.lix.polytechnique.fr/>)

* [Bitwise Operators in C and C++: A Tutorial]
  (http://www.cprogramming.com/tutorial/bitwise_operators.html)
  (on <http://cprogramming.com/>)

* [In C++ is "const" after type ID acceptable?]
  (http://stackoverflow.com/questions/988069/in-c-is-const-after-type-id-acceptable)
  (on <http://stackoverflow.com/>)

* [Arrays and pointers in C]
  (http://www.ibiblio.org/pub/languages/fortran/append-c.html)
  (on <http://www.ibiblio.org/>)


## Noob Other Stuff

* [Markdown: Syntax]
  (http://daringfireball.net/projects/markdown/syntax)


## AVR C stuff

* [AVR Libc Library Reference]
  (http://www.nongnu.org/avr-libc/user-manual/modules.html)

* [avr-libc/include/avr/iom32u4.h]
  (http://svn.savannah.nongnu.org/viewvc/trunk/avr-libc/include/avr/iom32u4.h?revision=2288&root=avr-libc&view=markup)
  : list of registers and associated bit numbers for ATmega32U4


## Articles / Tutorials

* [Arduino I&sup2;C Expansion IO]
  (http://www.neufeld.newton.ks.us/electronics/?p=241)
  (from [Keith's Electronics Blog]
  (http://www.neufeld.newton.ks.us/electronics/))


## Other Firmware / Code

* zip: [Phantom Firmware from PrinsValium]
  (http://geekhack.org/attachment.php?attachmentid=38982&d=1327895092)

	* mentioned in the [Building Phantom Hardware and Firmware Mods]
	  (http://geekhack.org/showwiki.php?title=Island:26742)
	  article (on <http://geekhack.org/>)


* github: [Pyrolistical / tmk_keyboard]
  (https://github.com/Pyrolistical/tmk_keyboard/tree/master/fourway)

	* mentioned in the [KeyPoard]
	  (http://geekhack.org/showwiki.php?title=Island:26845)
	  article (on <http://geekhack.org/>)

* github: [humblehacker / keyboard]
  (https://github.com/humblehacker/keyboard)

	* mentioned on [the humblehacker keyboard website]
	  (http://humblehacker.com/keyboard/)

	* mentioned on [the humblehacker geekhack page]
	  (http://geekhack.org/showwiki.php?title=Island:6292)

	* mentioned on [the designer's blog]
	  (http://humblehacker.com/blog/)

* github: [TWI library in C]
  (https://github.com/arduino/Arduino/tree/master/libraries/Wire/utility)

* zip: [PJRC: usb_keyboard]
  (http://pjrc.com/teensy/usb_keyboard.zip)

	* mentioned on [the PJRC website]
	  (http://pjrc.com/teensy/usb_keyboard.html)

* zip: [PJRC: blinky]
  (http://pjrc.com/teensy/blinky.zip)

	* mentioned on [the PJRC website]
	  (http://pjrc.com/teensy/gcc.html)


## Chip Documentation

* [Microchip: Analog & Interface Product Selector Guide]
  (http://ww1.microchip.com/downloads/en/DeviceDoc/21060z.pdf)

	* from [the Microchip website (MCP23017 product listing page)]
	  (http://www.microchip.com/wwwproducts/Devices.aspx?dDocName=en023499)

* [MCP23017 / MCP23S17 Data Sheet]
  (http://ww1.microchip.com/downloads/en/DeviceDoc/21952b.pdf)

	* from [the Microchip website]
	  (http://www.microchip.com/wwwproducts/Devices.aspx?dDocName=en023499)

* [MCP23018 / MCP23S18 Data Sheet]
  (http://ww1.microchip.com/downloads/en/DeviceDoc/22103a.pdf)

	* from [the Microchip website]
	  (http://www.microchip.com/wwwproducts/Devices.aspx?dDocName=en537375)

* [Teensy 2.0 (ATMEGA32U4) Data Sheet]
  (http://pjrc.com/teensy/atmega32u4.pdf)

	* from [the PJRC website]
	  (http://pjrc.com/teensy/datasheets.html)

* [Teensy++ 2.0 (AT90USB1286) Data Sheet]
  (http://pjrc.com/teensy/at90usb1286.pdf)

	* from [the PJRC website]
	  (http://pjrc.com/teensy/datasheets.html)

* [Teensy 2.0 Pin Assignments, Using C]
  (http://pjrc.com/teensy/card2a.pdf)

	* from [the PJRC website]
	  (http://pjrc.com/teensy/datasheets.html)

* [Teensy 2.0 Pin Assignments, Using Arduino]
  (http://pjrc.com/teensy/card2b.pdf)

	* from [the PJRC website]
	  (http://pjrc.com/teensy/datasheets.html)