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Built for Makers Robotics • Electronics • DIY

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Physical + Online Store Visit us in Pimpri or shop online

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2WD Obstacle Avoiding Robot Kit - DIY Ultrasonic Robotic Project

Specification	Details
Chassis Material	High-Quality Transparent Acrylic
Microcontroller Support	Arduino UNO Compatible (Pre-Programmed)
Motor Type	Dual 3V-6V BO Motors (Yellow)
Sensor Type	HC-SR04 Ultrasonic Distance Sensor
Motor Driver	L298N / L293D Support
Power Source	4 x AA Battery Box / 2 x 18650 Li-ion Support

Price

🚚 Ships within 24 Hours
📦 Pan India Delivery

₹ 1,313.56 ~~₹ 1,999.00~~

(Tax included)

Barcode: 59301173

Product Description

The 2WD Obstacle Avoiding Robot DIY Kit is a comprehensive educational platform designed to introduce students and hobbyists to the world of autonomous robotics and embedded programming. The kit features a durable acrylic chassis, two high-torque geared motors, and an ultrasonic "eye" (HC-SR04) that allows the robot to "see" its surroundings. By processing distance data, the robot can autonomously navigate through complex environments, detecting walls or objects and calculating a new path to avoid collisions. This kit is a perfect "Level 1" project for anyone looking to bridge the gap between basic electronics and intelligent machine behavior.

Code Link-https://drive.google.com/file/d/1vX8egb1CibDxdfurMfwf0oP-Ealu_pi_/view?usp=sharing

Key Features

All-in-One Mechanical Base: Includes a precision-cut acrylic chassis with pre-drilled holes for motors, sensors, and microcontrollers, eliminating the need for complex fabrication.
Non-Contact Navigation: Utilizes ultrasonic sound waves to detect obstacles up to 4 meters away, providing much smoother navigation than mechanical "bump" sensors.
Modular Design: The chassis offers plenty of space and mounting points to add extra sensors like IR line followers, Bluetooth modules, or OLED displays later.
High-Grip Drive System: Comes with two rubber-treaded wheels and a front omnidirectional caster wheel, allowing the robot to perform zero-radius turns.
Educational Curriculum Ready: Ideal for STEM workshops, school projects, and teaching the fundamental logic of "Input-Process-Output" in computer science.

Technical Details

Chassis Thickness: ~3mm Acrylic.
Dimensions: ~200mm x 150mm (Assembled).
Included Hardware: M3 Screws, Nuts, Spacers, and Motor Brackets.

Prototyping and Engineering Tips from Robogears

The "Servo Scan" Upgrade: For more advanced navigation, mount the Ultrasonic sensor on a small SG90 Servo Motor. Instead of the whole robot turning to "look" for a path, the servo can sweep the sensor 180 degrees to find the widest opening before the motors even move.
Power Management: Geared motors can create "noise" in the circuit that causes Arduino resets. Always use two separate power paths if possible: one for the logic (9V battery or Power Bank) and one for the motors (AA batteries). If using a single source, add a large 220uF capacitor across the power rails to smooth out voltage dips.
Sensor Shielding: The HC-SR04 can sometimes give "false positives" if it's picking up ultrasonic reflections from the robot's own chassis or the floor. Ensure the sensor is mounted at the very front edge and angled slightly upward if operating on thick carpets.
Coding Logic: Start with a simple "Stop and Turn" logic. Once that works, implement "Proportional Slowdown"—where the robot slows down as it gets closer to an object—to make the movement look more natural and "organic."
Weight Distribution: Place your heaviest component (the battery pack) in the center or slightly toward the drive wheels. If the robot is too "nose-heavy," the caster wheel will create excessive friction; if it's too "tail-heavy," the drive wheels might lose traction and slip.

Package Includes

1 x Transparent Acrylic Chassis Set
2 x Geared BO Motors with Wheels
1 x Caster Wheel (Universal Wheel)
1 x HC-SR04 Ultrasonic Sensor Module
1 x HC-SR04 Mounting Bracket
1 x Battery Holder + 2 18650 Cells
Complete Set of Screws, Nuts, and Standoffs

Disclaimer: This is a DIY kit and requires assembly. Soldering may be required for motor leads. The microcontroller (Arduino/Nano) and motor driver (L298N) are often sold separately or as part of an expanded bundle; please verify your specific kit contents. Always double-check wiring polarity to avoid damaging the sensor or controller.