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23-10-2020 #1
Hello, Mustafa.
You might be able to get a bit more assistance on some of the Arduino forums, as this feels to be very much focussed on Arduino based technology. But, whilst were here...
When/how did you blow the fuse?, before or after you adjusted the pot?, and have you replaced the fuse with the correctly sized replacement fuse?, or just bypassed with a bit of wire?
If replaced with a similar fuse - did you blow the second as well?
The fuse blowing is a real indicator here. I'm not familiar with the 8825 driver, though it looks a bit on the light side; what's the specification of the motor? (current/coil). That you've blown the fuse concerns me - it looks like the random CNC shield that I googled (don't know if this is the one you have) protects the supply for up to 4 drivers - I'm inferring from this that, with one driver installed, you're pulling more current than the shield is designed to supply for 4 drivers... I'd be checking the wiring to the stepper, and also whether the stepper motor has a short on one coil (low-resistance measure across each coil and check for resistance commensurate with the motor specification).
Another thing... blowing a fuse is pretty dramatic - I'd check you have no shorts on the terminals to the motor, or even debris on the driver / shield that could be causing the short.
With all due respect, you've told us nothing here - give us a link, or description as to what you've done.
One issue here is, if you've drawn enough current through the driver to have blown the fuse, I wouldn't bet on the driver still working - you might be flogging the proverbial dead horse here. Have you got a replacement that you can test? (after checking coil resistance and visually checking for short circuits)
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