DIY Low-Cost CNC Power Supply Guide

How to Build a Low-Cost CNC Power Supply?

It features strong functionality. Below is the finished DIY result of the CNC power supply for reference:

Overall Appearance

Power supply panel

Front Panel

Back Panel

Internal Layout

The CNC power supply includes a built-in fan

A 24V 5A switching power supply

A mains socket (8-shaped plug)

And an XT60 output socket on the other side of the panel.

The panel features power switches, DC output connectors, banana plugs, and threaded fastening methods. 

The power output lines are mainly used in model aviation, but can also be used for other purposes, requiring alligator clips.

The CNC power supply uses the XYS3580 model, featuring a boost-buck structure, combining analog adjustment and digital control. It allows real-time monitoring of preset voltage/current, input voltage, output voltage/current, power, capacity, energy, and operating time data. The output voltage remains stable even when the input voltage is lower/equal/higher than the output voltage.

Input voltage ranges from 6 to 36V, output voltage from 0.6 to 36V, output current up to 5A, and output power is 80W.

Additionally, the power supply is compact in size. Recommended opening dimensions are as indicated in the diagram.