I have my 4 autodrivers V13 hooked up and working properly with an arduino mega, just a weird problem is occuring :
the steppers never complete large movements or continuous rotations:
If I use mystepper.run(FWD, 300) once for example, it runs for about 2 seconds then stops. If I put the function mystepper.run(FWD, 300), and only this ,in the loop(), it runs, stops, runs, stops etc at regular intervals. The problem is greater with lower speeds (at speeds of about 800, the problem does not occur).
Quite similarly, if I use for example mystepper.goto(5000), the steppers travels for a while and then stops at an apparently random location (the function getPos() works fine). If I ask for small movements (up to about 1500 steps), no problem. Large movements are NEVER completed.
This happens the exact same way on my 4 boards. I tried using just 1, 2 , or 3 of the boards, the problem remains the same.
I know there is something wrong in the way I configure my boards (I dont see any other option...) but do you have any idea what could cause this ?? I have thoroughly read, several times, the hookup guide.
Thanks much !