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How do I re-tune my a4988
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Marcy33
Registered: July 16, 2025
Posts: 1
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Today I tried to modify the reference voltage (VREF) of my a4988 from OYOSTEPPER. but the potentiometer was adjusted too high so I don't know how to re-set it to 1.2V.
samlevy0515
Registered: May 7, 2025
Posts: 4
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Just turn the pot all the way counterclockwise first (gentle touch—those pots are fragile), then slowly adjust clockwise while measuring VREF with a multimeter until you hit 1.2V.
Beeiokanfa
Registered: August 4, 2025
Posts: 1
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Quoting samlevy0515:
I think the same as you! Trying this way may also have a 50% success rate but I think it's worth trying until a better solution is found.
CedricAve
Registered: August 4, 2025
Posts: 1
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Interesting challenge! While direct manipulation can be tempting, have you considered consulting the datasheet or OYOSTEPPER's documentation for recommended VREF setting procedures?
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