Stepper motor to low curent not moving ...to high curent to hot

Hello,

i have a problem, my mottors do not spean and whene i raise the power it gets very hot and laud... and they stiil make a lot of noiz even whene the curent is very low ...

I have generation 6 and the mottors are DC 6V 0.8A

Thank you.

Edited 2 time(s). Last edit at 02/25/2013 01:28AM by Andrei_socivoi.

hi, i use sanyos ( or rather, still testing)

mine are 9v, .85A

i use 4983, they seem to skip less steps than 4988 (still not sure why)

did you calibrate the drive current?

when mine is almost calibrated, i measured a casing temp of about 45-50degrees. just fyi

Edited 1 time(s). Last edit at 02/27/2013 02:48AM by redreprap.

Quote

my mottors do not spean and whene i raise the power it gets very hot and laud

First, remove the belts to make sure there is no mechanical friction. You should be able to turn the motor with your fingers easily when powered down.

In case the motors still don't turn - they should even with a very low current setting at the Pololus - check the cabling. Power the board down, pull the motor plug(s). Measure wether there's a resistance of about 7.5 ohms between the left two pins on the motor connector. The same should be true for the right two pins of the motor. The resistance of each pin of the left pair should have infinite high resistance (isolated, no connection) to each pin of the left pair.

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