Quantity   Component name
1 × Teensy 3.1 (or 3.2) <a target="_blank" rel="noopener noreferrer" href="http://store.hackaday.com/products/teensy-3-2">http://store.hackaday.com/products/teensy-3-2</a>
1 × Teensy Audio Board <a target="_blank" rel="noopener noreferrer" href="http://store.hackaday.com/products/teensy-3-2">http://store.hackaday.com/products/teensy-3-2</a>
1 × Drum Master PCB
1 × HD44780 Display
1 × Rotary encoder with push button
1 × A bunch of electronics parts (See schematic for details)
1 × Drum pads with sensors (See logs for details)