Quantcast
Channel: Reprap Forum - Controllers
Viewing all articles
Browse latest Browse all 10211

Current measurement?

$
0
0
While I'm waiting for the parts to arrive, I do some read-up on what to do once they get here. Right now I'm trying to wrap my head around current-adjusting.

Right, so what the wiki says and what most of the forum posts I find says is that I should use the formula Current=VREF(8*Rs), and that the Rs value for the Polulu is 0.05Ω, but if it's a Stepstick it's 0.02Ω, and... Well, with all the ebay finds these days it can be a tad bit bothersome figuring out what you've got, since some of them only says "A4988 stepper driver".

Anyways, couldn't I read the current value directly from the motor with the multimeter on connector 2B, like this? Also, since the pin layout is consistant, that should work independent of what driver one's using, right? Or have I overseen something here?



Viewing all articles
Browse latest Browse all 10211

Trending Articles