Grains with midi out code

Hello lukylutte,

I assume you are referring to this firmware: github.com/aemodular/GRAINS/tree/master/Grains-MIDI-out

Please read the notes carefully .. it only works on Desktop and you need to install a special software!


Notes:

The Atmega processor used in GRAINS is not capable of sending out MIDI via USB directly, but luckily serial data can be converted to MIDI easily. A popular way to do this is the free software "Hairless MIDI<->Serial Bridge". Software and documentation for MacOS/Windows/Linux can be downloaded here: projectgus.github.io/hairless-midiserial

If you want to use this MIDI data as input for your DAW on your PC you will need a MIDI-loopback device in software or route MIDI-out to MIDI-in with your hardware

Please make sure to close Hairless MIDI when you want to upload this Firmware to GRAINS (uses the same USB-Serial-Port)

You can use up to 5 pots to send out MIDI CC for instance by setting 2ATT/CV to 5V and sending the voltages to IN3 and A (analogue input)

Attaching controls in your DAW can be a bit tricky: set all knobs to 0 and only dial in one pot to max and back to zero at a time

As an extra also MIDI-in will be processed: any key pressed will trigger a Gate via digital out

Any Controller-Data sent to GRAINS (via Hairless MIDI or similar) will generate CV via analog out

In terms of performance please avoid unnecessary MIDI-data, for instance clock-signals should be avoided to be sent via Hairless Midi, here

The so called Midi "running status" is recognized on input, but not used on output, so this firmware should be compatible with any MIDI-hardware or software.

To avoid the complexity of additional libraries, we use our own midi_sendControlChange() method here instead of the standard MIDI.sendControlChange(). MIDI-inut is processed directly as incoming serial data. If you want to extend MIDI-capabilities you may want to change this by installing the Arduino MIDI-Library and change this accordingly! playground.arduino.cc/Main/MIDILibrary/ For Details regarding integration with "Hairless MIDI<->Serial Bridge" please refer to the site of the project as already mentioned above.