Does anyone have experience with controlling DMX lights via an Arduino and Firmata from Pd?

I'm using a Duemilanove board plugged in via USB and I've uploaded the StandardFirmata sketch to it. I think Pd and the board are communicating successfully as the debug light flashes whenever I send anything to the [Arduino] object, and I know the lamp is plugged into the board correctly as I uploaded a simple test sketch to make the lamp fade up by itself and it worked.

I guess the only thing I don't know at the moment is the syntax for the messages I have to send from Pd to the board to communicate with the lamp. Also I don't know what mode I have to set all the pins to.

I would have thought the messages should look something like [digital 1 255( which would turn channel 1 (red) up to full, but it's not working.

Any help would be greatly appreciated!

I'm running Pd 0.41.4-extended on MacBook Pro running OS X 10.6.4.

OK, I've now managed to solve this.

Will be posting a vid tutorial after the break for those who are interested.

Please do, I am very Interested in this.

Thank you and good luck.

Also very interested in this.

Here is the video tutorial on this as promised. Turned out being a bit more comprehensive than I first set out to do, so it's in two parts:

Pt 1:

Let me know of any questions!

nicely done.

+1 You're a good communicator!

Thanks. This is my first video tutorial, but I may make more around the theme of RjDj scenes and reactive music if people are interested...

Normally people would use a DMX shield for this,

as you have it the dmx is running at 5v instead of the 2.5v standard, I imagine this could damage some dmx equipment.