[PD] Pd, Arduino, and Multiple LED's == Installation?
nicholas.ward at cs.tcd.ie
Thu Jan 15 16:53:03 CET 2009
I got 32 channels of PWM using two tlc5940 connected to several
uln2003. Actually i found someone had a circuit diagram too.
Here we go. If you dont ever have all 100 on this might work using
some multiplexing too. There is a library for arduino written for this
chip. I can send you the code i used if you go this route.
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On 15 Jan 2009, at 14:39, Roman Haefeli wrote:
> --- Dafydd Hughes <dafydd61 at gmail.com> schrieb am Do, 15.1.2009:
>> Von: Dafydd Hughes <dafydd61 at gmail.com>
>> Betreff: Re: [PD] Pd, Arduino, and Multiple LED's == Installation?
>> An: pd-list at 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.
>> On Thu, Jan 15, 2009 at 12:01 AM, Kyle Klipowicz
>> <kyleklip at 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
>>> (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,
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