IndyShield – CNC Arduino Shield


A simple screw terminal shield that makes it easy to connect to external stepper drivers. Can be used with any CNC machine. PCB only!

13 in stock



IndyShield is a simple Arduino UNO/Leonardo GRBL compatible shield with screw terminals so that you can easily connect big stepper motor drivers, spindle control and buttons. I made in order to control my IndyMill, but in fact, it can be used to control any CNC machine and even every project that involves stepper motors.

While designing I focused on simplicity so there is not a lot to solder and every beginner would easily do it.

In order to finish the PCB you will need to buy:

  • 21 Two port screw terminals
  • 4 gold pins for I2C header
  • Arduino shield headers

This product is PCB only! Assembled Unit is only shown for reference.