Otto Formula Racing Car – Modular Chassis for HP Robots Otto

🏎 Otto Racing Car – 3D Printable Chassis🏎

Transform your Otto robot into a mini autonomous racing car with obstacle detection and track-driving capabilities.

This lightweight chassis, inspired by Formula racing cars, gives Otto a completely new look while preserving all original electronics and sensors. The front ultrasonic sensor acts as the driver’s eyes , enabling the robot to detect obstacles and react in real time.

This project demonstrates how the Otto platform can be extended into creative STEM robotics applications .

⚡ Features

- 🏁 Formula-style racing chassis

- 🤖 Fully compatible with HP Robots Otto platform

- 🔧 Uses original Otto electronics and wheels

- 🚧 Obstacle detection with LED warning system

- ⛔ Automatic stop when obstacle is too close

- ▶ Auto-resume after obstacle removal

- 🎮 Manual control via virtual joystick (Wi-Fi)

- 🎓 Perfect for STEM / educational projects

🧠 How It Works

The Otto robot is mounted inside the chassis and secured using two connectors.

- The front support wheel allows smooth “car-like” movement

- The ultrasonic sensor detects obstacles:

- 🔴 LEDs flash red when approaching an obstacle

- ⛔ Robot stops when too close

- ▶ Continues driving after obstacle is removed

- 💡 White LEDs on the sensor can be turned on/off

- 🎮 Manual control is available via web interface (joystick)

🛠 Assembly

- Move the support wheel to the front position

- (Optional) Replace the wheels with included racing versions

- Insert the Otto robot into the chassis

- Secure it using the two connectors

- Upload the control code ( main.py ) using Arduino Lab for MicroPython

- No screws or glue required

🖨 Printing

Recommended settings:

- Layer height: 0.2 mm

- Infill: 15–20%

- Supports: not required

- Material: PLA / PETG

All STL files are pre-oriented for optimal printing .

🎨 You can mix colors for all parts.

Create your own unique racing team design !

🎨 Custom Nose Logo (Modular Insert)

The lightning symbol on the nose is a separate interchangeable insert .