Download all latest schematics, PCBs and bills of materials for 32 inputs version in KiCad and PDF formats from MegaDrum forum (forum registration required)
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MegaDrum Atmega32 Digital Board
MegaDrum Analogue Board - 32 inputs version.
MegaDrum LCD, Keyboard, Rotary Encoders (optional) and MIDI In/Out (optional)
MegaDrum Input Sockets
Optional. EEPROM extension
