Last year, I designed a solenoid control board based on Arduino UNO which is still working very well. The board was based on ATmega328p (arduino standalone) and used an optoisolator 6N136 to isolate the high power from the low power circuit and I used a MCP1406 as MOSFET driver for the FQP30N06L . N…

Arduino, solenoid driver and current limiter

Wawa May 30, 2018, 8:52pm 12

I'll try again.
I think you shouldn't reduce power to the opto coupler and U$4.
Leo..

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