holtzman wrote:Congratulations for your working gear! I must say this is something I could not build right now as I do not have experience with ICs and flip-flops. And i still do not understand completely its working principle.
If i got it right, the drum makes 1 pulse each turn, and electronics provides other 3 in sequence? If so, you may have some problems on start because the frequency is different. And you have to adjust very fine your circuit in order to get continuous pulse sequence at the right speed of 12.5 fps.
I am going to a short vacation tomorrow so won't be here for a while sorry...
Hi Holtzman : )
What you did making a mechanical flip flop to drive that H bridge Mosfet transistor circuit was Fantastic shear genius!
The main reason i am not copying it at the start is for me thats pretty hard ! and being lazy the electronics is easier for me .
i just want to try pulse or pulses in syncing the big drum to the small ,i will use a light switch ldr as you so i want to cheat here and make the circuit do the work ....but just trying one ldr because the electonics should be doing the work of you mechanical switches.
So the big drum will be triggering a monostable and i might have another after to adjust the pulse width ,i know the light monostable works i just have to copy that again on this board ...
Its 4 pulses and i can play around with the timing...stepping .
One thing i wasn't sure about was if your motor was geared or direct drive
?
I am going to work on getting the light modulation levels best i can .
Off topic if any one knows ? if you could get a stepper to drive at NBTV speeds via direct or gearing would you need syncing once you adjusted it to the correct speed ? i mean would the motor drift or would it be locked if the timer your using doesn't drift of frequency .