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Recent Forum Posts

For Sale (30 Pieces) New Samsung Galaxy Z Fold7 256GB Original (Unlocked) $41,970CAD

Contact information
Company Name Newsetinc
Give us a call +1 (450) 285 6008
WhatsApp Chat Only +1 (450) 235 0881
Monday to Saturday 9:00 am - 6:00 pm
Sunday & Public Holiday Closed
Price are...
joemealr Today, 08:47

For Sale (20 Pieces) New Samsung Galaxy Z Fold7 256GB Original (Unlocked) $28,980CAD

Contact information
Company Name Newsetinc
Give us a call +1 (450) 285 6008
WhatsApp Chat Only +1 (450) 235 0881
Monday to Saturday 9:00 am - 6:00 pm
Sunday & Public Holiday Closed
Price are...
joemealr Yesterday, 08:03

Re: InfraRed ramblings

Yeah, these are unipolar steppers, not bipolar.

I'm using the ULN2003 as driver that came with them. I'll be switching to a ULN2803 for my use.
Demon - 16th July 2025, 23:27

Re: InfraRed ramblings

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...
mark_s - 16th July 2025, 16:38

For Sale (10 Pieces) New Samsung Galaxy Z Fold7 256GB Original (Unlocked) $14,990CAD

Contact information
Company Name Newsetinc
Give us a call +1 (450) 285 6008
WhatsApp Chat Only +1 (450) 235 0881
Monday to Saturday 9:00 am - 6:00 pm
Sunday & Public Holiday Closed
Price are...
joemealr - 16th July 2025, 10:40

Re: InfraRed ramblings

Thanks Mark!

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...
Demon - 16th July 2025, 03:24

Re: InfraRed ramblings

You can also use a hall effect IC and a small magnet. The hall effect ic's come in a 3 pin TO-92 package and are easy to interface to your micro.

For example
...
mark_s - 16th July 2025, 00:16

Re: InfraRed ramblings

ARGH! That's what they're called. :D I knew these existed, I just didn't know their names.
Demon - 15th July 2025, 22:53

Re: InfraRed ramblings

Search optical interrupter. These are used often for homing.
...
mark_s - 15th July 2025, 18:29

Re: InfraRed ramblings

There will be minimal light leakage. These will be on either side of a disk, as close as I can get them.

I plan on putting black heatshrink over the LEDs as close as I can to the rotating disk.
...
Demon - 15th July 2025, 03:35

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