Hello all,
I built a 3-axis driver for my bipolar stepper motors, but it's not working perfectly. I implemented the "typical application" given in the datasheet of the L6208, and also mentionned in an app note from the manufacturer.
See p19 of the datasheet: http://www.st.com/stonline/products/...re/ds/7514.pdf
The problem
- If I power up the board, then I start "jogging" in Mach3, the motor vibrates or move randomly in no precise direction.
- If I start sending pulses with the power OFF, then I turn on the power of the board, then the motor rotates smoothly in the commanded direction. But if I stop and restart again, the motor again vibrates or rotates randomly.
I tried to add more capacitors to improve filtering of the power supply but it didn't help. I'm running in full-step mode, but I wonder if switching to half-step would change anything.
I really don't know how to could solve this problem, so I'd be really glad to get some help.
Thanks in advance.