“Modifying Clone Keyes CNC Shield.
One the web are Chinese cloned Keyes CNC Shields for the Arduino NANO.
They are cheep and good value. BUT.
If you want to set Micro Stepping as they are, you can’t.
Who ever cloned/made this shield made a mistake and put the pins that should go to Vcc, to GND.
As the pins that set the Micro Step Mode are already pulled down to GND internally as default, and to change there state, they need pulling up to Vcc.”