2811 pixel to dc board/s

Wolfie

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David_AVD said:
As long as you don't send values other than zero or 100% you shouldn't have an issue.

You will need a diode across the relay coil though. A 1N4004 (or 1N4007) with the cathode (banded end) towards the V+ terminal will do.
Yep, to take care of the quenching spike. Know about that. What I wasn't sure about is if the output was constant or pulses.
 
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