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Posted by D Herring on September 30, 2007, 9:45 pm
Please log in for more thread options Chull13 wrote:
> Yup you can.
> Is there a Windows PWM Controller that has at least 24 channels, 1.?
> to 2.2 vlts dc and I think about 160 milli (4000 miliwat total for all
> cghannels) watt per channel with Very Prograble PWMs?
The SSC32 (32 PWM channels, RS232 or TTL control) is $40. Useful for
light shows and servo monsters.
> Thanks for getting back.
> PWM does work and there is disagreement as to if PWM is better or
> straight voltage. I don't care wich is better if I can get these thing
> built before the snow flies! :)
The SSC32 also supports stable digital levels ("discrete output" or
"byte output", 0-5v). Or you could approximate variable DC output by
filtering the PWM with caps. If this isn't a battery powered system,
I think I'd just use the 0-5v discrete output with some resistors to
keep from burning the LEDs.
- Daniel
>> Seems like I remember being able to control LEDs with a PWM signal, so
>> perhaps one of the USB Servo Controllers would do ? I'm sure others can
>> comment better on this. Also might try Google search using "PWM" and "LED"
>> in the keywords.
>>
>> Hope that helps get you there ...
>> JCD
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> USB, Serial Parallel or whatever.
> I need it to be able to be controlled by Windows 95/W2K/or XP
> software.
> It will need to be able to drive 24 seperate channels (2 LEDS on each
> channel) single color with at 3 brightnes levels (or vaiable) with a
> minumun of 15 pulses per second on each channel.
> I would think there is already something out there and I just don't
> have the time to home brew a stand alone contoller.
> Thank you