Andy, et al.
I just contacted Janice to order two of the Procyon lightframe adapters and wanted to clarify one issue regarding the output of the Procyon.
To control the current through each LED, I'm making an assumption that the Procyon uses Pulse-Width Modulation of the full 3V/18 mA (whatever it is) drive signal in order to control the "average" current through each LED. This is opposed to using a digitally-controlled current source output for each channel.
If PWM is used, then I'm guessing that any external control circuitry should be fast enough to keep up with the switching rate and control the external brightness proportionally. Perhaps a simple interface would be to pass the Procyon output into an RC averaging filter and then run that into the DAC input of a microcontroller for further use--for example, to adjust color balance between channels for large color-wash effects or to mitigate the different power/thermal requirements of the large output arrays.
Thanks,
--Scott
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