You can choke a photransistor by putting it behind an aperture.
I'd be more interested in timing the signal. That would give me speed right there, the slower the rotation the longer the pulse. How many ms per degree does it turn at top speed?
You can choke a photransistor by putting it behind an aperture.
I'd be more interested in timing the signal. That would give me speed right there, the slower the rotation the longer the pulse. How many ms per degree does it turn at top speed?