(Context: I’m looking at trying the MP6500 instead of the A4988 to keep running longer as a 12V battery dies down in the field.)
The description of the MP6500 potentiometer-controlled version states “The VREF voltage is accessible on a via that is circled on the bottom silkscreen of the circuit board” – which is easy enough. I was wondering, though…
-
It’s a via, right, so as long as I get the correct little hole, I should be able to measure it from the top side of the board, too… there just wasn’t room to circle it? It looks like it’s next to the unpopulated pads where the SMT resistors for the digital-control version aren’t.
-
You do link to Claire’s excellent video with the trick of measuring VREF from the screwdriver that’s turning the potentiometer. Could you confirm that works on this carrier, too?
Thank you!