MegaDrum bootloader firmware:
MegaDrum bootloader firmware for Atmega32/324/644
MegaDrum firmware:
MegaDrum Atmega32/324/644 versions (16/20/24MHz)
MegaDrum Atmega8 versions (16/20MHz with(out) gain)
Windows/Linux/Mac Software:
MegaDrum Config Tool - control your MegaDrum from a computer
USB Firmware:
Recommended. PIC18F2550 USB MIDI firmware for 4/8/12/16/20MHz crystals:
MegaDrum USB MIDI Firmware PIC18F2550 4/8/12/16/20MHz
Alternative. Contributed by Synthex PIC18F2550 USB MIDI Board firmware:
MegaDrum USB MIDI Firmware 18F2550 12MHz V2.hex