I bought some of those stepper motors you linked above. Really cheap, small with a gearbox, but be aware they are wired so you cannot use them with a standard stepper driver module. These have five...
I was considering laying a limit switch flat along the outer edge of the disk, and use a notch to catch the limit switch roller. But I'm liking the hall sensor even more:
- no...
if there is any ambient light leakage a ir sensor like SEN-19018 would be better than a photo diode, with the bonus of making
led modulation unnecessary too.
Published on - 31st May 2010 17:38
Number of Views: 9512
It's almost Olympics time... so here's a topical program using PBP exclusively (no embedded Assembler) to give you a Stop-Watch with 1/100th Second Timing (yes that's 0.01 of a Second) and gives you REAL-TIME display on your LCD. Now you can do your own timing and challenge the official time...
The program demonstrates using TMR1 in BACKGROUND (multi-tasking), uses PICBasic Interrupts, and accounts for the fact that PICBasic doesn't respond to those Interrupts immediately. There's also a set-Up CALIBRATION menu item, so you can adjust and calibrate your timer to an accuracy of 360mS per Hour.
How does it do all that? Better download the PDF and find out...
Melanie
PS. Questions and Comments post on this forum/thread. No off-list mail please.
Re: InfraRed ramblings
Yeah, these are unipolar steppers, not bipolar.
Demon - 16th July 2025, 23:27I'm using the ULN2003 as driver that came with them. I'll be switching to a ULN2803 for my use.