HI Steve
I will give that a go i know this help does not just appear and you have to work this out so thanks heaps also to Gary on the last circuit change ,i would of made the changes today if i saw to post !
I could not see any change to the pulse on Garys 100k from pins 2 to 7 but i really looked more into the trouble making side of the circuit today .
What i did today was pretty much rebuild the motor control tried to copy this circuit for the motor side of the control .
Below is my two sided bistable PLL testing control ///i only have one ic in its socket at a time to test what works better at the moment neither is giving me much love !
The 555 pulse seems enough to control the motor but until i can switch the thing on again and it sits on 400 hz and not over shoot and such its not much good to me and may as well go manual which with my tweaking i am pretty much doing now.
With the circuit below the first 100k is bypassed for the 555 but its need for the PLL because pin 13 to the gate of the mosfet it drops away all i see is noise .....
I can pull the ic out and i can see its doing nothing ,more me and how good the trimmers can be adjusted thats doing the controlling .
I don't know why the PLL is not working on 5 volts or 12 but 11.55 there abouts !...i have got pin 9 to ground i just tried that as i saw one version of this circuit used that idea .
If it takes me all year i will try and make this thing run at 400hz ...may be on page 364 with luck
i can see as gary and klaas has helped me advice with the front end opto reflector and LM311 and sync this is also important to control that motor but i can see as far as the PLL gos something is not right here ..i will go looking for another brand of this PLL my luck i have 20 of this one !
Below are newyears555.wav this is out of the lm311 and 2555 is out of pin 3 555 to the mosfet gate on 555 bistable motor control....