Icecats,
That squealing sound and jerky inconsistent movements is one symptom of too high of a step rate. Its not a current issue. This could have several causes:
If you think the board is jumpered to 16 microsteps, and it's really set to single there will be too many steps per second for the stepper to begin rotating.
Info on exactly what your setup is (board, drivers, feed rates, acceleration, and firmware version) will help.
That squealing sound and jerky inconsistent movements is one symptom of too high of a step rate. Its not a current issue. This could have several causes:
- Double check the board's documentation on the microstepping jumper settings, check the web to make sure it's correct.
- Check the microstepping your drivers are jumpered to.
- Check your steps per mm in firmware.
- Check your feed rate. Set it very low like 10mm/sec to test.
- Check your acceleration values. A stepper can not accelerate instantly. Set to a low value like 20mm/sec just to test.
If you think the board is jumpered to 16 microsteps, and it's really set to single there will be too many steps per second for the stepper to begin rotating.
Info on exactly what your setup is (board, drivers, feed rates, acceleration, and firmware version) will help.