I am trying to interface the Uno with a Magnecraft timing relay that will be switching a larger 90VDC load. The relay is set up to accept a simple dry contact closure to close the coil. I would like to use an output pin to do this from the Arduino but am getting some extremely spotty results. Does anyone know of the simplest way to do this? I don't need the 5VDC output, I just need to close the contacts. Thank you for the help!
I think ll I really need is direct continuity and don't know how to achieve this.
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