[PD] dmx interfaces + Pd

Martin Peach chakekatzil at gmail.com
Wed Jul 1 22:08:09 CEST 2015

I think the Open DMX USB widget behaves as a raw serial port so you need to
generate DMX packets 'manually' by sending break (sequence of zeros longer
than a character) before each message. At the moment [comport] doesn't have
the capability to send breaks but I think it could be done. Since the
computer has to time the breaks it can happen that they are out of spec and
the DMX equipment doesn't always get the messages. The Pro handles serial
comms with the computer separately from the dmx so the timing is always


On Wed, Jul 1, 2015 at 2:56 PM, Peter P. <peterparker at fastmail.com> wrote:

> * Martin Peach <chakekatzil at gmail.com> [2015-07-01 14:46]:
> > Here's a patch that uses [comport] to talk to an entec DMXUSBPro.
> Would that also work with the DMX USB (non-Pro)? Does anyone know what
> the difference between these two models is? I seem to remember vaguely
> that the Pro does buffer messages locally and reschedules them.
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