TouchMIDI : How To Customize Firmware For Your Original Project

If you have a github account, you can fork our source code and develop your own project. Here We explain how to customize firmware for your own project on TouchMIDI.

1.Fork our TouchMIDI firmware.

link to github for TouchMIDI

2.Customize and build your own project on MPLAB X IDE.

(MPLAB X is IDE for PIC MCU. You can get information here.)

3.You can use much more terminals than PAD1-10.
     If you want GPIO, you can use IN1-4, OUT1-4.
     If you want to connect to I2C devices, you can use SCL/SDA.
     If you want to use UART, you can use TX/RX(not only MIDI).
     Detail of Each Terminals is here.

4.Write your original firmware to TouchMIDI by PICkit3.

TouchMIDI : How To Apply To Your Project

You can apply TouchMIDI to your project very easily.

This is a very simple example of applying TouchMIDI.

TouchMIDI is set to a jig, and PAD1-10 are soldered to copper foil.
If you touch the copper foil, TouchMIDI outputs MIDI messages. And you can get sound!

PAD1-10 are below:

TouchMIDI : How To Confirm

If you obtain this board, what can you do first?

1.Connect to USB Cable.

2.Start MIDI application, and setup some instruments. ( e.g. GarageBand on Mac )

3.Connect the other terminal of USB Cable to PC.
   ( If GarageBand on Mac, You can see "Changed Number of MIDI inputs" on the screen.)

4.Touch PAD1-10 terminals by a finger or a wire. You can get sound.

5.You can also check MIDI messages that TouchMIDI outputs by using a MIDI monitor.

TouchMIDI Specification

TouchMIDI Outline

TouchMIDI is a board outputs MIDI via USB when capacitance touch sensors are touched.
Firmware is already written to this board, so you can utilize it for making your original MIDI controller project only soldering electrodes.

Features:

• adopting CapSense technology by Cypress
• USB mini-B connector enables it to output MIDI
• small size 50mm x 19mm
• power supplied via a USB cable
• only you have to do is just soldering electrodes
• firmware already written, 10 electrodes are assigned to MIDI note:C3 to E4 
• enable to rewrite firmware to PIC18F14K50 by using PICkit3

How to use:

• let No.8~12 of P1, No.1~5 of P4 be soldered to electrodes.(You can realize them easily by using a copper foil tape cut 1cm square, and soldering cables to those pins)
• connect USB mini-B cable to PC/smartphone
• software synthesizer that has a MIDI functionality can be sounded by touching electrodes
• an interval of two hole is 1320mil (about 3.35cm)

Movie: