Let's assume you have a typical "Annoy Tools 3-Axis GRBL 1.1f Board." Here is a breakdown of the most critical sections you would find in the PDF.
Disclaimer: This guide is for informational purposes. Always verify wiring with a multimeter and follow electrical safety guidelines. The author is not affiliated with Annoy Tools. annoy tools cnc board manual pdf
Check microstep jumper settings. Ensure the "EN" pin is not forced low. Increase Vref slightly using the potentiometer. Let's assume you have a typical "Annoy Tools 3-Axis GRBL 1