hu has circuit for stepper motor to rotate from 0-180 deg. back n forth continous...plz....using registers ttl ic's.
AMPdeck: With those parts it sounds like you are in the right way to make it happen, I would be interested to see what you done for kicks.AMPdeck said:parts list:
555 (create astable freq.)
74194 - for shift right shift left
7476 - FF. q and not q connected to s1,s0 of 194
unl2003 - stepper motor driver
zener diode 12v
2pcs 74193 (make a binary of 100dec then nand to cp of FF....
stepper motor which has 1.8deg per step.....
The ULN2003 it is just an H-bridge drive type of thing.... well it is actually high voltage, high current darlington arrays. As you probably know to move a stepper motor you need to send a sequence of signals, which will energize the coils of the stepper accordingly. So the ULN2003 is not just enough. His project is to use discrete IC type of thing.falleafd said:Well, I don't know what you intend to do, but why do you need 555 and shift registers? ULN2003 is enough. What will your control signal come from? PC or MC? or you use 555 to get a fixed velocity?