Introduction

As part of my engineering portfolio, I present this custom-designed CNC shield for Raspberry Pi, a project focused entirely on the development and integration of the electronic system required to control a small CNC machine.

The shield was designed from scratch with the goal of powering the entire system from a single source, simplifying both wiring and deployment. It handles the control of stepper motors, endstops, and servos, and establishes communication with the Raspberry Pi through GPIO, offering compatibility with multiple machine types — including 2D plotters, 3D printers, and light-duty CNCs.

From schematic design to PCB layout, the focus was on:

• Efficient power distribution for motors and microcontroller.
• Low-noise routing to reduce EMI and signal integrity issues.
• Compact, modular design, adaptable to different mechanical configurations.
• Manual soldering and testing of all components on a custom PCB.

This project reflects my approach to electronics: practical, robust, and with a strong focus on hardware-software integration. The shield is ready to be used in education, prototyping, or as a base for further machine development.

🛠️ Designed, assembled, and verified entirely by me as a functional proof of concept.