I have a couple of easy driver stepper motor drivers that use the ad3967 ic.
I'd like to use these for 1/8 microstep, which they can do.
On a fat stepper I have they work fine, however I want to use a small motor with little load on it, to get this to work I'll need to reduce the current limit on the board, no problem I though pull the 2 sense resistors and put bigger ones in, but I cant find any r's less than 1k.
I assumed there would be sense resistors as there is a current limit pot on board, which currently is 150 to 750ma, 15 to 75 ma would be more appropriate for me. Maybe it current limits through other means.
The board does work on a little stepper but the movement is very rough on anything other than full or half step.
I'd like to use these for 1/8 microstep, which they can do.
On a fat stepper I have they work fine, however I want to use a small motor with little load on it, to get this to work I'll need to reduce the current limit on the board, no problem I though pull the 2 sense resistors and put bigger ones in, but I cant find any r's less than 1k.
I assumed there would be sense resistors as there is a current limit pot on board, which currently is 150 to 750ma, 15 to 75 ma would be more appropriate for me. Maybe it current limits through other means.
The board does work on a little stepper but the movement is very rough on anything other than full or half step.