bookmaker32
USA
Asked
— Edited
Hi guys, Here I am back in bewilderment land. I am trying to run a stepper motor with a Spark Fun Big Easy stepper motor driver. No problem except no matter what PWM I put in the motor runs at the same speed. About 24 RPM. I checked the PWM and it is doing exactly what the EZ-Bv4 tells it to do but the Big Easy just runs the motor at the same speed. Anybody know what is going on?
@kamaroman68, I can now reach very hi RPM,s with no trouble at all. The astable pulse generator I built is available on line very cheap. Pulse generator
I read the reviews on that sparkfun controller and there are lots of complaints getting it to work properly and it breaking for seemingly no reason. I picked up some from pololu but havent played with them yet. They are the same kinds used on 3d printers and are increasingly popular
im happy to help if i can. can you be specific about how you intend to use the stepper. what is your goal rpm ? just to let you know higher voltage increases the response time of your stepper and higher rpm capability. typical voltage for best performance has a basic formula. 2.5 x rated amps x rated voltage = optimal operating high rpm voltage.