The Ninja Robot is an advanced, transformable robot designed for students, hobbyists, and STEM enthusiasts. This unique robot walks, dances, reacts to obstacles, shows emotions, and can instantly transform into a wheeled robot for high-speed movement—making it one of the most versatile educational robots you can build.

Powered by an ESP Ninja PCB,  Ninja supports both Otto Blockly (block-based coding) and Arduino IDE (C++), allowing beginners and advanced learners to enjoy robotics programming.

With its expressive LED/OLED eyes, ultrasonic obstacle avoidance, and wireless control via mobile devices, Otto Ninja brings creativity, movement, and personality into one compact robot.

All mechanical parts are optimized for FDM 3D printing, with easy assembly and no support materials required—perfect for makers, students, robotics clubs, and DIY engineers in Bangladesh.

✅ Features

• 🦾 Walks, dances & transforms into a wheeled robot

• 🚗 High-speed rolling mode with continuous rotation servos

• 👩💻 Beginner-friendly coding using Otto Blockly

• 💻 Advanced programming with Arduino IDE (C++)

• 🦇 Ultrasonic obstacle avoidance

• 👀 LED Matrix or OLED emotional eyes (interchangeable)

• 🔊 Plays emotional sounds & melodies

• 👇 Button input for interactive control

• 📱 Wireless communication for mobile/tablet remote control

• 🔧 Designed for easy assembly and maintenance

• 🌐 Fully open-source (code, hardware & design)

✅ 3D Printing Requirements

• Recommended: FDM 3D printer

• No supports or rafts needed

• Layer height: 0.2 mm or less

• Infill: 15%

✅ Package Contents

• Ninja PCB (ESP 32) / Compatible Wemos + Servo Shield

• Micro USB Data Cable

• 6F22 Rechargeable Li-ion 9V Battery (650mAh) with USB Charging

• Toggle Switch + UBEC Regulator (5V/3A) + Connectors

• 2× Ninja Servo 180° (Metal Gear)

• 2× Ninja Servo 360° Continuous Rotation (Metal Gear)

• 2× O-Ring Wheels (68mm OD / 60mm ID)

• Ultrasonic Sensor HC-SR04

• Button Module

• 4-pin & 3-pin Dupont Cables

• Buzzer Module

• Phillips Screwdriver (2.5×40mm)

• 4× Metal Self-Tapping Screws (M2×5)

• LED Matrix 16×8 HT16K33 (Optional)

• OLED Display 1.3″ (Optional)

• 3D Printed Parts:

  • Ankle Left (Black)

  • Ankle Right (Black)

  • Base (Black)

  • 2× Feet (Black)

  • Inner Bottom (Black)

  • Legs (Black)

  • Starter Lid (Black)

  • Plate Matrix Lid (Black)

  • Plate Ultrasonic Lid (Pink)

  • Decorative Band (Red)

✅ What Ninja Can Do

• Walk like a biped

• Transform into a wheeled robot

• Roll at high speed

• Dance & perform gestures

• Show emotional expressions

• Avoid obstacles

• React to button inputs

• Communicate wirelessly with phone/tablet

✅ Coding (Beginner to Advanced)

• Start with Otto Blockly (drag-and-drop coding)

• Upgrade to Arduino IDE (C++) for advanced control

• GitHub repository available for source code and examples