Build MIDI Controller with 400 Keys (Arduino and PC Keyboards)

How to build a 400 key MIDI controller with computer keyboards and an Arduino. Thought it would be fun to work with something a little bigger after the Bluetooth Minion Keyboard adapter toy we made last week

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Cheap Arduino Bluetooth HID Module (HC05 with RN42 firmware hack)

Arduino makers and hobbyists will appreciate this one. Here’s how to turn a $3 Bluetooth module (HC-05 or HC-06) into an HID module (like the RN-42 or BlueSMiRF HID) with a firmware hack.

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