[PD] Pd, Arduino, and Multiple LED's == Installation?

Natanael Olaiz nolaiz at gmail.com
Thu Jan 15 14:44:21 CET 2009

Hi Kyle,

For an installation for the LAC 2008 I used a Midibox 
(http://www.ucapps.de/) with a special custom digital output controller 
(with optocouplers and power transistors) to control up to 64 (I used 
48) 3W power leds.
I used Pd to control that over MIDI, and I added to the Midibox firmware 
the posibility to use PWM to control the leds bright.

I'm terrible sorry to Frank Barknecht and Martin Rumori about my still 
pending documentation, as the last year I was in a hurry between several 
projects... But I still want to do it, so... I can start with the 
hardware part, that I'll try to do on the next week, but anyway, if I 
can help you with something specific just write me. Basically, with an 
Arduino you could do the same, you just need some power /isolation (to 
use an external power device for the leds) interface.

Well, I'll send the link when I'll publish the circuit.

Best regards,

El 01/15/2009 06:01 AM, Kyle Klipowicz escribió:
> Hello Listers~
> I'm working on an art gallery installation and I want to use Pd to 
> control some high-powered LED's via an Arduino unit.
> The breakdown is this: I need to create a series of RGB LED's that 
> will provide accent illumination to the gallery space, and shifts from 
> red to blue over a course of 6 weeks. The program isn't very difficult 
> to write. I've already decided to link it to the system date/time so 
> that the installation can be powered down easily at night. What's 
> tricky is knowing what hardware to use and how to get it together. I 
> am going to want between 25-100 lights at minimum, possibly more.
> I've looked at a few sites and links already, especially the Arduino 
> site. They have some things related to DMX lights, and this is 
> something I've seen a bit on the list as well. I don't know if this is 
> a good solution or if it is overkill for what I want to do.
> One piece of hardware that seems promising is the ShiftBrite 
> (http://www.macetech.com/blog/node/54). Does anyone know about this?
> I know this might  be considered off-topic, but I'd really appreciate 
> it if any seasoned veterans could throw me some tips. I'll be 
> exploring other areas, but I know there are some honed brains skimming 
> these emails so maybe they can drop some science on me.
> Thanks in advance,
> ~Kyle
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