An open-source DIY wheeled smart robot kit designed for interactive robotics learning, Arduino programming, and STEM education. Modeled after the cute Otto DIY aesthetic but adapted for fast, smooth 2-wheel drive rolling mobility, this compact robot navigates environments easily while intelligently avoiding obstacles using its ultrasonic "eyes," making it a highly engaging and approachable project for kids, students, and coding beginners.

Component List:-

1. 1 × 3D-Printed/Molded Main Head/Body Enclosure Cover
2. 1 × 3D-Printed/Molded Lower Wheeled Torso/Base Plate
3. 2 × 3D-Printed/Molded High-Traction Textured Wheels
4. 1 × HC-SR04 Ultrasonic Distance Sensor Module (Eyes)
5. 2 × FS90R Continuous Rotation Micro Servos (or Mini Geared DC Motors)
6. 1 × Arduino Nano (or compatible mini microcontroller board)
7. 1 × Arduino Nano I/O Expansion Shield Board (for easy motor/sensor plug connections)
8. 1 × Mini Piezo Buzzer (for chimes, sounds, and alerts)
9. 1 × 4AA Battery Holder (or 3.7V Li-ion battery setup with step-up converter)
10. 1 Set × Female-to-Female Dupont Jumper Wires
11. 1 × Mini On/Off Rocker Power Switch
12. 1 Set × Assembly Hardware (Micro Screws and Hub Fasteners)

Features:-

1. Smooth and fast 2-wheel drive (2WD) rolling mobility setup
2. Autonomous obstacle avoidance utilizing a front-facing HC-SR04 ultrasonic sensor
3. Compact, iconic 3D-printed/molded modular chassis layout
4. Fully compatible with Arduino IDE and scratch-based block coding platforms
5. Driven by continuous rotation micro servo motors or mini geared DC motors for precise speed control
6. Balanced low-profile center of gravity for steady multi-surface rolling
7. Expandable architecture designed for adding buzzers, line tracking modules, or Bluetooth control
8. Easy snap-together assembly ideal for makerspaces and beginner classrooms

Applications:-

1. Introduction to rolling mobile robotics, sensory logic, and automation bases
2. Interactive STEM coding workshops for schools and educational institutions
3. Gamified programming practice (teaching robots how to maze-solve, dodge, or race)
4. Creative customization, 3D printing design, and modular hardware experiments
5. Entry-level wheeled AI modeling, science exhibitions, and DIY electronics clubs