ok, one last question before I test it with some sourcecode. no ohm meter, no checking the coils
. so I just connected the 4 cables (from the coils) to the uln2803, that means I dont know the sequence of the coils.
can I test it by sourcecode? I mean I would now send a byte to pin2 (parallel port), pin3, 4 and 5. if it dont work, try the next variation and so on... like:
2345
2354
2435
2453
2534
2543
3245
3254
3425
3452
3524
3542
4235
4253
4325
4352
4523
4532
5234
5243
5324
5342
5423
5432
one combination MUST work right?
edit: wooorks!!!
edit2: the stepper runs a little slow, my sourcecode is like:
voltage on coil1 and wait 1 ms
voltage on coil2 and wait 1 ms
voltage on coil3 and wait 1 ms
voltage on coil4 and wait 1 ms
if I increase the 1 ms, then the stepper runs even slower of course, with 0 ms (so no waits between turning each coil) the stepper do nothing. but once I had changed my code so the stepper turns really fast, but I lost this code... someone have an idea how to get the max out of it (speed)?