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

Features:

  • 27 RGB backlit mechanical key switches
  • 5 Potentiometers
  • 1 Encoder (w/ switch)
  • OLED display (32x128)
  • USB-MIDI
  • Hardware MIDI Out (1/8" minijack, Type A/B switchable)
  • CV pitch and CV Gate outputs
  • Teensy 3.2 microcontroller

Modes

(modes are still work in progress and subject to change)

MIDI keyboard

  • sends USB-MIDI and hardware MIDI notes along with 5 CC’s.
  • sends CV pitch and CV gate (limited to 4 octave range)

Sequencer 1 - single pattern

  • 8 patterns of 16 steps
  • plays one pattern at a time
  • variable pattern length

Sequencer 2 - multi pattern

  • 8 patterns of 16 steps
  • plays all patterns at the same time
  • variable pattern length (for each pattern)

(still lots to do in the sequencer code)

Github

Firmware, BOM, build info and case designs are available on Github.

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


Why?

Why not? :grin:

Use it to control norns, ORAC, PiSound, softsynths, modular, etc.

Reminder - This is DIY

This is a Do It Yourself project. It’s designed to be easy to build for someone with basic thru-hole soldering skills (with an smd-assembled pcb). This is not intended to be a “finished” product for purchase.

Per the lines trade rules - please, no discussion of buying/selling in this thread. A trade thread will be started/linked when it becomes available.

Support for builds, tech-issues, etc. can be found in this thread.

Status

Not yet available. Beta testing now.

Hardware is good to go. MIDI keyboard works great. Sequencer software is still somewhat alpha. No documentation.

How / Where / When?

I am looking at making kits available for purchase.

Please see this Interest Check Form to register your interest

Demos

Proper Youtube demo to come soon.

A few quickie instagram demos:
https://www.instagram.com/p/CJX8CADh7iP/
https://www.instagram.com/p/CIc1WFBhv1U/
https://www.instagram.com/p/CIaL_uGBwJJ/

Social Hashtag: #omx27

73 Likes

That’s so handy.
Nice work S.

2 Likes

Absolutely gorgeous!! That looks like a ton of fun, the videos on insta are :fire:

3 Likes

This is fantastic! Inspiring build!

1 Like

That PCB is beautiful :heart_eyes:

Can’t wait to build one.

Beautiful, love it.

Wait - what - B to C? :slight_smile:

(oh - 16 keys - I get it.)

1 Like

looks great, love the 909/yamaha su700 style buttons! I will try to build one when available

The buttons are what stood out to me, too — I’m obsessed. Might have to buy one just for those buttons…

1 Like

I love it.

I think I would like to use it with my Norns more so than as a stand alone cv controller.

Is there any hardware related reason I couldn’t modify the firmware to decouple the led,lcd, and cv outputs from the key and knob inputs? So that my Norns or other host could set the led and cv out in response to things going on in a script?

Very cool project!

I’ll be doing a large-ish buy of the keycaps, so will likely have some to offer as sets.

It’ll be hackable sure. I’m pretty sure what you describe would be doable. :slight_smile:

1 Like

Awesome! will there be an OMX-88? Kidding but also not kidding :smile:

1 Like

This could be a prototype for a 60% mechanical keyboard which doubles as a midi controller/sequencer. Looks interesting!