CNC v1.2 Assembly: Stepper Drivers, Motors, and Power

May 11, 2026

This page is a legacy assembly resource for the CNC v1.2 machine setup, focused on stepper drivers, motors, and power wiring.

It is kept as a support reference for older BuildYourCNC machines and electronics setups.

What This Guide Covers

This guide covers the basic electronics areas involved in assembling an older CNC machine control system.

Stepper motors are used to move the CNC machine axes. They receive controlled power from stepper drivers and move in small steps.

Each axis of the CNC machine usually has its own motor and driver.

Stepper drivers sit between the CNC controller and the stepper motors.

The controller sends motion signals, and the driver sends the correct power to the motor.

Correct wiring and current settings are important. Incorrect setup can cause missed steps, weak movement, overheating, or electronics damage.

The power supply provides voltage and current to the CNC electronics system.

Before connecting power, always check the voltage requirements for the drivers, motors, and controller.

CNC electronics can be damaged if wired incorrectly. Electrical work can also be dangerous.

If you are not sure how to wire the motors, drivers, or power supply, ask someone experienced with CNC electronics.

This is older BuildYourCNC support content. Some parts, wiring methods, or recommendations may have changed over time.

Use this page as a reference for older systems, not as a replacement for current product instructions.