EBUY STEM Mini CNC Plotter DIY Kit

Arduino UNO R3 🔧 GRBL Open Source ✏ XY Plotter Drawing Robot

Build Your Own Drawing Robot

This DIY CNC plotter kit is built on an Arduino UNO R3 board running open-source GRBL firmware, with three stepper motors and an integrated expansion board that plugs in directly, no soldering required. Featuring an improved rack-and-dovetail mechanical structure with a lifting Z-axis and a rotation-lock pen holder, this kit sends G-code from your computer via USB to draw, sketch, and letter automatically. A great educational STEM project for learning robotics, electronics, and CNC fundamentals.

Key Features

⚙ Open Source Platform

Includes Arduino source code, 3D printing STL files, and expansion board circuit schematics, everything needed to understand and modify the build.

🔧 Easy Assembly

Plug-in expansion board design eliminates soldering. Ideal hands-on STEM project for students and hobbyists.

✏ Precision Drawing

Lifting Z-axis and rotation-lock pen holder allow accurate pen drawing, sketching, and lettering.

🖥 GRBL + G-Code Control

Connects via USB to serial. Send G-code directly from your PC to control the plotter's movement.

Specifications

BrandEBUY STEM
Model Number5VMINICNC
Controller BoardArduino UNO R3 Compatible
FirmwareOpen Source GRBL
Motors3x Stepper Motors
ConnectionUSB to Serial (G-code)
AssemblyRequired, DIY Kit
Battery IncludedNo
ApplicationEducation and Learning, STEM Robotics
Included FilesSource Code, Circuit Diagram, STL File, G-code Sample
OriginChina

Product Images

Frequently Asked Questions

Does this require assembly?

Yes, this is a DIY kit that you assemble yourself. All parts are included and no soldering is required.

What controls the plotter?

An Arduino UNO R3 compatible board running open-source GRBL firmware, controlled via USB from your computer using G-code.

Is programming experience required?

Basic familiarity with G-code and Arduino is helpful, and full source code and documentation are included to help you get started.

What can it draw?

The pen holder with rotation lock allows it to sketch, draw, and letter designs generated from G-code files.