Reply To: Stepper Motor Configuration w/ Driver That is not EasyDriver

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#895

I only have an EasyDriver, a SN754410NE H-bridge and a L293D H-bridge. I have not tested any other drivers. However if the Pololu uses the same step + direction interface as the EasyDriver then I find it strange that it is not working unless the Pololu driver has specific timing requirements.

Are you trying to run the stepper_easydriver.html example? If so have you updated the stepsPerRev variable on line 128 to 400?

Are you taking microsteps into account? You need to multiply the number steps by the number of microsteps.

I’ve noticed that speeds over 25 rad/sec won’t work with certain motors so start with a low speed.

If the issue is timing then the only thing that will work is to add additional configuration parameters to the Firmata stepper protocol to support various delay requirements. This will require an update to Firmata and Breakout. Pull requests are welcome if you are sure that is the cause of the issue. We can discuss the details of the protocol if you want to pursue that direction.