I'm wondering if this can take 4-5000 RPM.
They are probably too expensive and big for what I need. What would be the best option if I want to make my own. Infrarred, reflective, photoresistor?? I don't need anything super precise. Probably can laser cut a wheel and even use a reduction. If I can get a pulse every 4-5 turns of the DC motor is more than I need.Thanks