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DIO Dimming

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So I'm kicking around the idea of buying a National Instruments DIO-96 board as they are available cheap on eBay.  Alas, the cable costs more than the board.

Now I realize these are for DC, and there is no zero-crossing-detector and if I was to connect the outputs to Triacs or SSRs to control AC I would pretty much be limited to on or off.

But if I use them for DC, do they (and Showtime v4) support dimming via PWM?

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