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A4988 VREF

Posted by samotras 
A4988 VREF
December 18, 2015 01:39PM
Hello , As million problems to coming out from sainsmart kits , now i reach to set current limit for A4988 drive , i know how i can to set current limit but first i need to know how i can to find out VREF for my A4988 drive , i saw polo video and other guide but in my A4988 no ref point at all !!
how i find out what VREF my A4988 has ?
just notice that sainsmart never reply to technical question !!!

Re: A4988 VREF
December 19, 2015 12:55AM
Usually, Vref is measured directly at the metallic part of the trimpot.
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