Stepper motor turns only one direction when using Nodemcu

[cattledog]

@scottsw

DM542T driver

The DM542T driver supports a pulse/dir interface and not the phase sequencing generated by stepper.h

See this simple demonstration code from Robin2 about how to run a pulse/dir motor driver without the use of a library.

Simple Stepper Program

I wrote a very simple program to demonstrate stepper control using a Polulu A4988 stepper driver. It should also work with any stepper driver that just needs step and direction signals from an Arduino. I have included it in response to several queries and it seemed it would be easier to create this Thread and then just add a link to it. Edit 10 Dec 2014 - readers may also be interested in this note about Stepper Motor Basics If all you want to do is demonstrate that a motor can work this code…

The mystery to me is why the code using stepper.h worked with the DM542T on a Uno.