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Show HN: OpenDeck – Platform for building MIDI controllers

47 points by grinchygrinch 5y ago

wdfx 5y ago
Does anyone know any existing open source that aims for the reverse of this? i.e. works as a midi data receiver (app or plugin) and maps to hardware/physical outputs? I've built my own for a midi-cv controller for modular synth, and it was way more work than I anticipated. I'm curious if other complete and flexible solutions exist?
- brylie 5y ago
  Perhaps Betweener? https://github.com/jkrame1/Betweener https://github.com/jkrame1/Betweener
- bambax 5y ago
  Sending MIDI is easier than receiving it, but with UsbMidiKlik and some wiring and soldering you can build a MIDI interface based on an Arduino Uno. https://github.com/TheKikGen/USBMidiKliK https://github.com/TheKikGen/USBMidiKliK
- bondarchuk 5y ago
  Have a look at http://wiki.midibox.org/ http://wiki.midibox.org/, I see example projects having midi inputs as well as outputs.
- rajangdavis 5y ago
  I've built a small-medium sized project around this library and React on the front end: https://github.com/djipco/webmidi https://github.com/djipco/webmidi You can send and receive MIDI messages with this library both from the browser and within a Node context. Along the lines of the React/browser lifecycle, I would be careful with listening to MIDI inputs. You have to add guards for when an input no longer exists and be careful when creating listeners. React Hooks help with this but it's easy to create footguns if you're reading and sending MIDI data.
bambax 5y ago
Wow, this is excellent! Why only the Arduino Mega though? I built an "air" MIDI controller with a regular Arduino Uno and cheap HC-SR04 sensors. This is me playing it: https://www.youtube.com/watch?v=tgH-WU-9CZA https://www.youtube.com/watch?v=tgH-WU-9CZA (Sorry for the silly wig). Flashing UsbMidiKlik to have a compliant MIDI device is kind of a pain (but not horrible). I may try to experiment with this and a Teensy... Thanks!!
- grinchygrinch 5y ago
  (Author here). Because the firmware size is about 70k right now for AVR, and ATmega32u4 has only 32k of flash. Black Pill STM32F4 boards are supported though, and soon 3 more STM32 boards.

47 points by grinchygrinch 5y ago

wdfx 5y ago

Does anyone know any existing open source that aims for the reverse of this? i.e. works as a midi data receiver (app or plugin) and maps to hardware/physical outputs? I've built my own for a midi-cv controller for modular synth, and it was way more work than I anticipated. I'm curious if other complete and flexible solutions exist?

brylie 5y ago
Perhaps Betweener? https://github.com/jkrame1/Betweener https://github.com/jkrame1/Betweener
bambax 5y ago
Sending MIDI is easier than receiving it, but with UsbMidiKlik and some wiring and soldering you can build a MIDI interface based on an Arduino Uno. https://github.com/TheKikGen/USBMidiKliK https://github.com/TheKikGen/USBMidiKliK
bondarchuk 5y ago
Have a look at http://wiki.midibox.org/ http://wiki.midibox.org/, I see example projects having midi inputs as well as outputs.
rajangdavis 5y ago
I've built a small-medium sized project around this library and React on the front end: https://github.com/djipco/webmidi https://github.com/djipco/webmidi You can send and receive MIDI messages with this library both from the browser and within a Node context. Along the lines of the React/browser lifecycle, I would be careful with listening to MIDI inputs. You have to add guards for when an input no longer exists and be careful when creating listeners. React Hooks help with this but it's easy to create footguns if you're reading and sending MIDI data.

bambax 5y ago

Wow, this is excellent! Why only the Arduino Mega though? I built an "air" MIDI controller with a regular Arduino Uno and cheap HC-SR04 sensors. This is me playing it: https://www.youtube.com/watch?v=tgH-WU-9CZA https://www.youtube.com/watch?v=tgH-WU-9CZA (Sorry for the silly wig). Flashing UsbMidiKlik to have a compliant MIDI device is kind of a pain (but not horrible). I may try to experiment with this and a Teensy... Thanks!!

grinchygrinch 5y ago
(Author here). Because the firmware size is about 70k right now for AVR, and ATmega32u4 has only 32k of flash. Black Pill STM32F4 boards are supported though, and soon 3 more STM32 boards.