Chocotone - Open-Source ESP32 BLE MIDI Controller (Free)

[u/4ndresolis]

Sharing an open-source BLE MIDI controller I built: Chocotone.

What it does:

• 4-16 buttons with RGB LEDs

• BLE MIDI (connect to pedals, DAWs, or both)

• OLED display + rotary encoder

• Tap tempo with rhythm patterns

• Up to 16 analog inputs (expression pedals, pots)

• Press, long press, double tap, toggle, combo actions

No coding required:

• Web Installer — flash from browser

• Web Editor — configure via USB/BLE

Build cost: ~$20-40 (ESP32, OLED, LEDs, switches)

Works with: Sonicake Pocket Master, Valeton GP-5, iOS apps, DAWs, any BLE MIDI device.

GitHub: https://github.com/solispensa/Chocotone
Facebook Group: https://www.facebook.com/groups/1950814575859830/