On 1/27/2018 11:15 AM, gary wrote: > > So looks like i have a driver problem i just can't figure out that out of 8 > or 10 8825 drivers most seem to be bad, is there a way to test them?
I've used 8825 drivers on the CRAMPS board without issue, but stepper drivers can be pretty easy to kill (most of them don't like it if the motor ever disconnects with power on, which includes loose connections while things are moving). To test, I typically just try them in-circuit. Since your problem seems to be with the enable, make sure the enable signal is low at the driver input. If that is correct, try setting the drive current with the resistor. If the drivers are working properly, you should be able to dial the current down to the point where you can turn the motors by hand (they may still be "locked", but with less holding torque). If setting the current has no effect, you have almost certainly got a bad driver. -- Charles Steinkuehler [email protected] -- website: http://www.machinekit.io blog: http://blog.machinekit.io github: https://github.com/machinekit --- You received this message because you are subscribed to the Google Groups "Machinekit" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. Visit this group at https://groups.google.com/group/machinekit. For more options, visit https://groups.google.com/d/optout.
