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jmej / MIDI2DMX

Circuits and patches for MIDI control over DMX lights
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CC mapping to DMX fade not working well in Ableton clip #13

Closed rosscopcoltrane closed 2 years ago

rosscopcoltrane commented 2 years ago

Hi there and thanks for this project, it’s really great to have a go at midi control of lights.

I’m using Ableton to control simple can fades through a Liteputer dx402a. Right now I’ve managed to get midi CC 2 to control DMX001, CC3 to control DMX002 etc etc. The lights are plugged in via Edison plugs, they aren’t addressed or DMX compatible, just plain old cans.

When trying to sequence my CC values it seems like I’m getting glitches, but on further inspection, the envelope seems to be divided into 3 or 4 zones, it’s hard to tell. This (while kind of workable), gives me the effective resolution of 30 or something, a bit steppy really. Perhaps there’s something I’ve done wrong..

Could the liteputer be causing this?

rosscopcoltrane commented 2 years ago

DMX start address is set on Liteputer as 001 by the way.

jmej commented 2 years ago

I think you may be in the wrong place - this is the issues thread for the midi2dmx diy project.. Im not familiar with the liteputer line of devices.. are you also using a midi2dmx board?

rosscopcoltrane commented 2 years ago

Sorry I wasn't so clear. I have been using the Midi2DMX board, but not directly to a DMX led light. I'm going via a Liteputer (standard DMX 4 channel dimmer). It's pretty good to have any control really, I just wondered if I could somehow get better resolution. I'm dimming standard lights, just old school power via a dimmed edison plug, no address for each light.

jmej commented 2 years ago

Midi2DMX sends out a 7 bits of resolution - so basically there is a *2 for every value.. to translate from midi (0-127) to DMX (0-254).

Sending out higher resolution would be a nice feature - I've considered an NRPN solution - or using midi pitchbend - but for now that's the best it can do.

It sounds like you're having another issue with the liteputer and without that hardware I'm unable to test - but it should be seeing movement on every other step as your'e doing a fade.. which should look much smoother than what it sounds like you're seeing. I'm closing this issue for now - since I don't think this is an issue on the midi2DMX side of things.