Maybe I am overcautious, but I would use an Arduino Mini to determine if a set of three relays is operating properly. It would seem logical to use analog inputs on each side of the relays and make a comparison between In and Out. Can anyone see any problems with that, electricity-wise, or Arduino-wi…

Determining If Relays Are Working, Programmatically

CrossRoads April 12, 2014, 11:33pm 3

What's switching on the contact side of the relays?

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