About this 3D model

Spider Robot is a compact 3D-printable quadruped robot powered by an Arduino UNO and SG90 micro servos. Designed for makers and robotics enthusiasts, this project combines simple mechanics with effective walking kinematics and obstacle detection. The robot uses 8x SG90 servos (2 per leg) to achieve smooth walking motion and basic directional control. An ultrasonic sensor mounted on the front allows the robot to detect obstacles and react in real time. All parts are optimized for FDM 3D printing with minimal supports and easy assembly. ⚙️ Features ?️ 4-legged walking robot (quadruped) ⚙️ 8 DOF (2 servos per leg) ? Arduino UNO compatible ? Ultrasonic obstacle detection (HC-SR04) ? Designed for easy assembly (M3 screws) ? Simple and expandable code structure ?️ Fully 3D printable construction ? Required Components Arduino UNO 8x SG90 micro servo HC-SR04 ultrasonic sensor External 5V power supply (IMPORTANT – do not power servos from Arduino) Jumper wires M3 screws + nuts Optional: power switch ?️ Printing Tips Layer height: 0.2 mm Infill: 20–40% Supports: only for legs if needed Material: PLA / PETG Print orientation optimized for strength of joints ? Assembly Notes Calibrate all servos to 90° before assembly Use screws instead of glue for better durability Make sure joints move freely (no binding) Keep wiring tidy to avoid leg collisions ? DEMO CODE (Arduino)