https://github.com/gdsports/buttons4

Stick-on Four Button USB MIDI Controller
https://github.com/gdsports/buttons4

arduino midi pro-micro usb-midi

Last synced: 25 days ago
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Stick-on Four Button USB MIDI Controller

• Host: GitHub
• URL: https://github.com/gdsports/buttons4
• Owner: gdsports
• License: mit
• Created: 2018-03-10T03:28:33.000Z (about 8 years ago)
• Default Branch: master
• Last Pushed: 2018-03-13T02:09:38.000Z (about 8 years ago)
• Last Synced: 2025-11-30T22:51:21.199Z (6 months ago)
• Topics: arduino, midi, pro-micro, usb-midi
• Language: C++
• Size: 126 KB
• Stars: 2
• Watchers: 1
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# Stick-on Four Button USB MIDI Controller

![Four button USB MIDI controller](./images/buttons4.jpg)

Sometimes a piece of gear really needs a few MIDI control buttons strategically

located. Now you can stick them on where needed.

## Hardware

* SparkFun Pro Micro or Arduino Micro

These boards are convenient because the pin arrangment includes a section with

a ground pin with 4 digital pins. The cable from the keypad can be plugged

directly into that section of the board. Other boards with the ATMEGA32U4 chip

should work but might require extra work to wire the keypad to the board.

The photo shows a Pro Micro clone board. Right angle headers are used to keep

the assembly as flat as possible. After soldering, the pins on the back were

cut flush with the board.

* Generic 4 button membrane keypad

Stick on where needed. But it may not be easy to remove so think twice before

sticking. Peel off the white paper on the back to uncover the adhesive. The

Arduino board can be stuck on using double-sided foam tape. This stuff is also

hard to remove.

## Software

Install the bounce2, MIDIUSB, and MIDI libraries using the Arduino IDE library

manager.

The sketch can be customized to send MIDI messages.

NOTE: System Exclusve arrays should be stored in program memory using the

PROGMEM attribute then sent using the USBSystemExclusive_P function. If not,

RAM will be quickly used up.

## Related Projects

Twelve button MIDI USB controller.

https://github.com/gdsports/buttons12

101 button MIDI DIN controller.

https://github.com/gdsports/USBHIDKbd2MIDI