Robosix

Obstacle Avoiding Robot Kit (Arduino Uno + HC-SR04)

SKU RS-KIT-OAR

Ultrasonic robot that senses walls and steers around them: Arduino Uno, an HC-SR04 scanner on a servo and a full step-by-step build guide.

₹2159 ₹3099 30% off

₹1829.66 + 18% GST (₹329.34) · Tax included · You save ₹940

In stock

Free shipping over ₹1000

  • Pay by UPI: GPay, PhonePe, Paytm & BHIM (no gateway fees)
  • Cash on delivery available
  • GST invoice on every order
  • Payment confirmed by us before dispatch (no auto-charge)
  • Dispatched in 2–4 working days from Agra, Uttar Pradesh.

Buying for a school or in bulk? Ask us for institutional pricing. Get a quote

About this product

This kit turns a simple 4WD chassis into a robot that can find its own way across a room. An HC-SR04 ultrasonic sensor sits on an SG90 servo and sweeps left and right like a radar head. The Arduino compares the distance readings, picks the clearer side and drives that way, reversing if it gets boxed in.

Because the sensor, servo and motor driver are all separate parts, students can change one thing at a time: raise the stopping distance, widen the scan angle, or add a buzzer that beeps as obstacles get closer. That makes it a far better teaching platform than a pre-built toy robot.

The box includes the chassis hardware, motors, wheels, sensor mount, jumper wires and screws, along with a build guide and tested sketch. Batteries are the only thing you need to add. Popular for school robotics clubs, exhibitions and weekend maker sessions.

obstacle avoiderultrasonicarduinohc-sr04school project

Specifications

ControllerArduino Uno R3 compatible board (ATmega328P)
Distance sensorHC-SR04 ultrasonic, 2–400 cm range
ScannerSG90 micro servo with ultrasonic mount bracket
Motor driverL298N dual H-bridge, 5–35 V input
Drive4 x 200 RPM BO motors with 65 mm rubber wheels
Power2 x 18650 holder with switch (cells not included)

More in DIY Kits

You might also need