DIY 3D Printed Multi-Color Pen Plotter | Auto Pen Change!

In this video, I build a fully functional multi-color 3D printed pen plotter with an automatic pen changer! No manual pen switching needed — the machine picks pens on its own and draws beautiful artwork.

🔧 Powered by Arduino, stepper motors, and a smart tool holder mechanism. All parts are 3D printed and open-source.

🎨 Features:

Multi-color drawing with automatic pen change

G-code controlled via GRB

Custom pen holder using servo

Compact and fully DIY-friendly design

Whether you're into robotics, 3D printing, or just love CNC art — this project is for you!

💬 Let me know if you want the STL files, firmware setup, or G-code examples.