Accordion Mega readings - accordion-mega/AccordionMega GitHub Wiki
Unsorted!
http://createdigitalmusic.com/2006/10/30/diy-midi-drum-triggers-with-arduino-midi-over-usb/
http://www.synthzone.com/ctrlr.htm
http://www.audiomulch.com/midipic/
http://highlyliquid.com/midi-controllers/
http://www.instructables.com/id/Hacking-a-USB-Keyboard/step2/Trace-the-letters-back-to-the-pins/
http://www.linuxmusicians.com/viewtopic.php?f=6&t=801
http://www.accordionteacher.com/discussion-forums/the-maintenance-and-repair-clinic/2128-diy-reedless-accordion
http://tomscarff.110mb.com/midi_chromatic_button_accordion/midi_chromatic_button_accordion.htm
http://tomscarff.110mb.com/downloads/downloads.htm
http://github.com/arduino/Arduino
http://hackaday.com/2009/12/28/moolodeon-electric-accordion/
http://newsgroups.derkeiler.com/Archive/Rec/rec.music.makers.squeezebox/2010-01/msg00015.html
http://elektorembedded.blogspot.com/2010/08/rayson-btm222-btm112-bluetooth-modules.html
http://forum.sparkfun.com/viewtopic.php?f=14&t=22448&start=0&hilit=rayson
http://www.freeduino.org/
http://timothytwillman.com/itp_blog/?page_id=240
https://code.google.com/p/arducopter/source/browse/trunk/libraries/#libraries/AP
http://www.instructables.com/id/Arduino-3-wire-Matrix-Keypad/step2/Wiring-up-the-resistors/
http://www.electro-tech-online.com/general-electronics-chat/33142-opto-interrupter.html
http://www.midi.org/techspecs/midimessages.php
http://popdevelop.com/2010/04/mastering-timer-interrupts-on-the-arduino/
http://interactive-matter.org/2009/12/arduino-barometric-pressure-sensor-bmp085/
http://cirictech.com/?p=51
http://hades.mech.northwestern.edu/index.php/Optointerrupter
http://en.wikipedia.org/wiki/Accordion_reed_ranks_%26_switches
http://tomscarff.110mb.com/midi_analyser/midi_note_numbers_for_octaves.htm
http://habrahabr.ru/blogs/arduino/
http://www.concertinaconnection.com/wakker%20midi.htm
http://www.ecs.umass.edu/ece/m5/tutorials/multiple_LEDs_tutorial.html