Is this circuit adequate to interface a micro-controller with a dc motor using an optocoupler?

MisterBill2

Joined Jan 23, 2018
19,466
It looks good, but I do not see any means of support for the circuit board except the solder connections to the motor attachment lugs. Both pressing the button and inserting/removing the connectors will transmit forces to those solder joints, as will any mechanical vibrations.
 

LowQCab

Joined Nov 6, 2012
4,309
Just keep in mind that these devices are ( relatively ) SLOW.

They are not useful for PWM or High-Speed-Switching.


Their Outputs can be connected in parallel an/or in series to
provide either more Voltage or more Current to the Gate.
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