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As an IT architect and author deeply passionate about microcontrollers and robotics, I've always aimed to bridge the gap between complex technology and hands-on creation. My work on books and workshops often highlights the power of platforms like the ESP32 and Raspberry Pi. This ESP32 Robot Car project grew directly from that passion: a desire to create a versatile, accessible, and truly open-source platform that empowers makers, students, and enthusiasts to dive into robotics without reinventing the wheel.
The journey began with sketches and countless iterations in CAD software. The goal wasn't just to design a chassis, but to craft a modular system that could serve as a robust base for endless possibilities. I wanted it to be easy to print on standard FDM 3D printers, yet strong enough to withstand the rigors of experimentation. More importantly, it needed to be flexible, allowing users to easily mount various sensors, motor drivers, and, of course, the mighty ESP32 development board.
This modularity is key. The chassis features dedicated mounting points for motors, wheels, battery holders, and electronic components on its electronics carrier. The cabin (Fahrerhaus) is designed to hold displays, while the front and rear bumpers (Stoßfänger) provide additional attachment points. We've included specific mounts for the motor driver and a versatile mounting device (Haltevorrichtung) that can carry everything from smartphone holders to custom tools. Beyond functionality, elements like the exhaust pipes, air intake, and engine cover are designed as optional visual enhancements, allowing for personal flair.
Throughout the design process, community collaboration was a core principle. This isn't just about sharing; it's an invitation. An invitation for you to download, print, modify, and innovate. I've personally experimented with various add-ons like ultrasonic sensors for self-driving modes, NeoPixel LED lighting, OLED displays for status, voltage meters for battery monitoring, and servo motor mounts. There's even a snow plow for a bit of fun! I plan to design more attachments like a metal detector, water sprayer, or brush, but the beauty of this open-source platform is that you are highly encouraged to design or further develop your own attachments for the robot car.
This project is a testament to the power of combining 3D printing with embedded electronics. It's a stepping stone for learning, prototyping, and fostering innovation. I'm incredibly excited to see what amazing creations you'll build upon this foundation. Your ideas and modifications are what truly bring this open-source platform to life!
3D printables files for download
Ready to bring your own ESP32 robot car to life? All the 3D printable files for this modular, open-source chassis – including STL, 3MF, and STEP formats for easy printing and modification – are freely available on Printables.com. Start building, innovating, and sharing your creations with the global maker community today!
https://www.printables.com/model/1352891-esp32-robot-car-chassis-modular-open-source-base
Resources
Want to dive deeper? Here you find more about this project and my other maker work:
Robot and ESP32 tutorials on my blog: https://custom-build-robots.com/
Local AI, LLMs and edge AI projects: https://ai-box.eu/
More 3D models on MakerWorld: https://makerworld.com/en/@Ingmar_Stapel
Videos on YouTube: https://www.youtube.com/@IngmarStapel
My book "Roboter-Autos mit dem ESP32" (Rheinwerk Verlag, in German) guides you from the build to AI-assisted coding and a self-driving model: https://www.rheinwerk-verlag.de/roboter-autos-mit-dem-esp32-bauen-programmieren-steuern
Next step: control the robot car with a PS4 or PS5 controller: https://www.hackster.io/ingmar-stapel/build-a-robot-car-with-esp32-and-ps-controller-control-016aee
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