This project is a low cost MIDI controller assembled over the Arduino hardware platform.

You can use as a MIDI controller for programs like Addictive Drums, Fruity Loops, Hydrogen or whatever MIDI capable software.

Bill of materials

Quantity	Component
1	Arduino (UNO, Leonardo, etc)
6	1MΩ Resistor
6	Audio Jack (TS) 3.5mm

You may also need:

Quantity	Component
1	Breadbord
1	USB to Micro USB Cable (PC to Arduino)
-	Wire

Algorithm analysis

An brief analysis on the algorithm used to fire MIDI notes are available in Piezo Analysis Notebook.

Schematics

In this schematics a TRS audio jack was used but only a mono jack is needed. So, you can replace it with a TS audio jack as listed in the Bill os materials.

Dependencies

Besides the arduino library this project depends on the MIDIUSB library.

On MIDIUSB github page you can also find instruction about how to connect your arduino as a MIDI device.

General MIDI from drums

In general, drummachines implements these midi signals.

Midi	Description	Midi	Description	Midi	Description
35	Acoustic Bass Drum	36	Bass Drum 1	37	Side Stick
38	Acoustic Snare	39	Hand Clap	40	Electric Snare
41	Low Floor Tom	42	Closed Hi-Hat	43	High Floor Tom
44	Pedal Hi-Hat	45	Low Tom	46	Open Hi-Hat
47	Low-Mid Tom	48	Hi-Mid Tom	49	Crash Cymbal 1
50	High Tom	51	Ride Cymbal 1	52	Chinese Cymbal
53	Ride Bell	54	Tambourine	55	Splash Cymbal
56	Cowbell	57	Crash Cymbal 2	58	Vibraslap
59	Ride Cymbal 2	60	Hi Bongo	61	Low Bongo
62	Mute Hi Conga	63	Open Hi Conga	64	Low Conga
65	High Timbale	66	Low Timbale	67	High Agogo
68	Low Agogo	69	Cabasa	70	Maracas
71	Short Whistle	72	Long Whistle	73	Short Guiro
74	Long Guiro	75	Claves	76	Hi Wood Block
77	Low Wood Block	78	Mute Cuica	79	Open Cuica
80	Mute Triangle	81	Open Triangle

Todos

• Schematic;
• Bill of materials;
• Used algorithms;
• Dependencies;
• gh-page;
• Assembly instructions for Pads and bass drum pedal.