OMX-27 v3 - MIDI Keyboard Kit

OMX-27 is a compact DIY hardware MIDI controller and sequencer with RGB LED backlit mechanical key switches.

Kit includes:

• SMD-assembled PCB w/ 27 LEDS
• FR4/PCB keyplate/top-plate
• Acrylic baseplate and spacer layer ( the "case")
• pre-soldered OLED display (white)
• 5 Alpha potentiometers (10kb) and 1 Bourns switch encoder (PEC11 series)
• "Befaco-style" micro knobs for the potentiometers
• Keycaps (see below)
• Key Switches (see below)
• Screws and nuts

There are two options Key Switches / Keycaps

• Cherry MX RGB Silent Red w/ DSA profile LED "windowed" caps
• Kailh Choc Red Low Profile switches with FK MBK Glow Dot caps

Soldering required:

• Switches, 5 pots, 1 encoder need to be soldered (these are all thru-hole parts)

GitHub (build guide, code, etc.):

https://github.com/okyeron/OMX-27

Hashtag: #omx27

Hardware Features:

• USB-C
• 27 RGB backlit mechanical key switches (MX or Choc)
• 5 Potentiometers
• 1 Encoder (with switch)
• OLED display (128x32)
• USB-MIDI
• Hardware MIDI Out (1/8" minijack, Type A/B switchable)
• Hardware MIDI In (1/8" minijack, Type A or B, auto-sensing)
• CV pitch and CV Gate outputs
• Option to use 3rd party lipo battery