only one direction in grbl control

I have an arduino uno and a cnc shilde and 3 driver(8825) but i ca only drive the stepper motors in one direction pleas help me :frowning: :frowning: :frowning:

What sketch on the uno are you using? Also what motor? Schematic?

I used my old CD-ROM
Please tell me what this project from the beginning for programming.
Thank you for your attention

What was on your old CD Rom?

You need to post your program and a simple diagram showing how you have one of the motors connected to the DRV8825 and to the Arduino.

Stepper Motor Basics
Simple Stepper Code