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4x4 Neotrellis arduino USB midi controller
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4x4 Neotrellis arduino USB midi controller

by LydiaNeko on Thu Nov 07, 2019 5:12 pm

I'm currently racking my brain over how to program a Neotrellis board to output midi to Ableton/Max for live. I'd like to use it as a small Monome but would be happy with basic USB over Midi output at the moment. I'm using an Arduino Uno which might not be ideal and following this guide:

https://www.instructables.com/id/Arduin ... ontroller/

The problem is nothing happens when I press the buttons. I believe this is because its designed for the older Trellis? I've run the basic program for Neotrellis and the buttons and lights all work fine.

Please help

LydiaNeko
 
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Re: 4x4 Neotrellis arduino USB midi controller

by mikeysklar on Thu Nov 07, 2019 10:46 pm

Hi LydiaNeko,

Maybe I should just start with what might be a stupid question for you.

Since you know you want a Trellis based USB midi controller would it make more sense to use the one of our Trellis options that was designed for this?

https://learn.adafruit.com/search?q=trellis%20midis

mikeysklar
 
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Re: 4x4 Neotrellis arduino USB midi controller

by LydiaNeko on Fri Nov 08, 2019 7:21 am

Thanks for your reply, my aim was to get a 16 button controller working with monome max software then build it into a custom controller. It might be a little bit easier to buy the M4 kit but also limited to button numbers and enclosure shape. I might have to step back and use a trellis instead it seems :(. Disappointing that the neotrellis doesn't accept the same code.

LydiaNeko
 
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Re: 4x4 Neotrellis arduino USB midi controller

by mikeysklar on Fri Nov 08, 2019 4:33 pm

Does the UNTZtrument guide meet your needs? It is a 16 button MIDI / USB ready device based on the trellis.

https://learn.adafruit.com/mini-untztru ... controller

mikeysklar
 
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Re: 4x4 Neotrellis arduino USB midi controller

by johnpark on Thu Dec 05, 2019 1:17 pm

We have a few guides showing how to do USB MIDI on a NeoTrellis M4, I would definitely check these out:
https://learn.adafruit.com/neotrellis-arpeggiator-synth
https://learn.adafruit.com/trellis-m4-m ... controller
https://learn.adafruit.com/neotrellis-live-launcher

EDIT: I just re-read your post, you're talking about a 4x4 NeoTrellis driver board I think. Which microcontroller are you using?

johnpark
 
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Re: 4x4 Neotrellis arduino USB midi controller

by johnpark on Thu Dec 05, 2019 8:03 pm

Here's an example I made in Arduino using the NeoTrellis 4x4 driver board with a Feather M0 Express (nearly any board that supports TinyUSB should work with my example):
https://github.com/jedgarpark/neotrelli ... SBMIDI.ino

You can rearrange the notes/order of notes in the noteTable[] array to pick which pad calls which note. Hope this is helpful.

johnpark
 
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