Thanks to everyone for the replies. I have the circuit working with the mosfet. I still haven't made the optical sensor replace the pushbutton but ...

Thanks for the help. I will try and work on this tomorrow. That sounds like it will work for me. I did have the motor running with the mosfet, bu...

@zander I guess I should have explained what I am trying to do from the start. I don't have a 520 module and I was trying to do this with what I ...

@zander Thanks for the reply. I guess I don't know what shorting the two leads of the 555 timer with the push button does and how to translate th...