To Do: Investigate/validate correct driver settings for A4988/DRV8825

DCC-EX / EX-Turntable

Turntable-EX is a new feature to control a stepper motor based turntable from DCC++ EX

GNU General Public License v3.0

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To Do: Investigate/validate correct driver settings for A4988/DRV8825 #87

Closed peteGSX closed 2 years ago

peteGSX commented 2 years ago

Enter Work Task Description

Feedback received that using TWO_WIRE may be incorrect for the A4988/DRV8825 stepper drivers, need to investigate/validate this.

Enter Done Criteria

The correct entries in "standard_steppers.h" defined for using A4988/DRV8825 stepper drivers.

peteGSX commented 2 years ago

This should indeed use DRIVER rather than FULL2WIRE, and I can only assume I misunderstood initially and got confused due to the two pin control vs. four pin control of the A4988 vs. ULN2003.

Updating standard_steppers.h to refer to AccelStepper::DRIVER instead.

Unit testing:

Update config.h to use AccelStepper::DRIVER_INV
Connect A4988 with NEMA17
Perform calibration and various step moves
Repeat with DRV8825 and NEMA17

peteGSX commented 2 years ago

All unit tests passed.