I would like to build a device so that each time a pulley turns a small solenoid will actuate (only need it to move about 1/4 of an inch) and if the pulley turns the other way a different solenoid will actuate. The pulley already has a magnet installed inside it so I was thinking of using a reed switch but then realized if the pulley stopped right on the reed switch the solenoid would stay deployed. Then I thought about using two reed switches, one that charged a capacitor and the second would discharge the capacitor to deploy the reed switch. I like this idea because I could use this to detect backwards pulley movement but I do not know if reed switches and capacitors would work at a 60 rpm. Could you please tell how this should be done. Also, I am a computer science person and have little knowledge about hardware.
Thank you in advance
Thank you in advance