I got a 100 K pot, and varied from top to bottom, I seen the signal peak to about 2v, so thats OK I guess.
But still, disk spins at full speed.
If I unhook the fork from the PLL chip, it slows down to whatever I set my speed pot at. as soon as I hook the phototransistor back in the circuit, it speeds up again.
What phase should the fork be, positive or negative? im thinking there is a phase problem or something I am totally stuck.
I got my phototransistor and LED from an old remote control and sensor, I took the sensor out of the IR module, and took the LED out of the remote.