--- Dafydd Hughes dafydd61@gmail.com schrieb am Do, 15.1.2009:
Von: Dafydd Hughes dafydd61@gmail.com Betreff: Re: [PD] Pd, Arduino, and Multiple LED's == Installation? An: pd-list@iem.at Datum: Donnerstag, 15. Januar 2009, 15:12 Hey Kyle
Sounds like a really cool project.
Are you sure you need any special hardware at all? You could use the PWM out from the arduino and a transistor for each set of LEDs you want to control then build an array. A friend just showed me this ridiculously cool site: http://led.linear1.org/led.wiz
I'm talking like I've done this before, but really I'm only part way through a similar process, so maybe it's all totally wrong:) Anyway, hope it helps.
i think, i'd do it the same way. i've done it before, but not in that large scale. Of course, one could purchase an expensive professional coloured Ligthing-LED-System with very expensive dimmable power supply units and sophisticated control-protocols such as DMX or DALI or whatsoever, but when not being afraid of a little soldering, you could achieve pretty much the same with anarduino, a handful of electronic pieces and plain LEDs from your local electronic store. actually, when using an arduino it is pretty straightforward to do something like that.
i wouldn't use common transistor fors driving the LEDs. i'd rather go for MOS-FET transistors. you could drive a whole bunch of LEDs with one MOS-FET and they draw nearly no current from the arduino digitalOut. also, as long as you work with low-voltage, you don't necessarily need de-coupling such as opto-coupler or so.
roman
On Thu, Jan 15, 2009 at 12:01 AM, Kyle Klipowicz kyleklip@gmail.com wrote:
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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