RoboticsJanuary 28, 2026•8 min read•TheBotBakers Team
How to Build an Obstacle Avoiding Robot with HC-SR04 & Arduino
A step-by-step tutorial on interfacing ultrasonic sonar sensors, motor drivers, and chassis kits to build an intelligent autonomous robot.
Building your first autonomous robot is one of the most exciting milestones in robotics! An obstacle avoiding robot uses an ultrasonic distance sensor (HC-SR04) mounted on a servo motor to navigate through maze-like spaces without bumping into walls.
Required Components:
- Arduino Uno or Nano
- L298N Dual H-Bridge Motor Driver
- HC-SR04 Ultrasonic Distance Sensor
- SG90 Micro Servo Motor
- 2WD or 4WD Robot Smart Car Chassis
- 18650 Li-ion Battery Pack & Holder
- Jumper Wires & Switch
All these parts are available as a complete university-ready kit at TheBotBakers!
#Robotics#HC-SR04#Motor Driver#Arduino
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