Gesture-Controlled Robot Car

Problem statement

Remote controlled cars using buttons or joysticks are common. A gesture based interface is more engaging and natural.

Abstract

The gesture controlled robot car moves in different directions based on tilt of the user hand. An accelerometer sensor mounted on a glove measures tilt and a transmitter controller sends commands wirelessly to a receiver controller on the robot, which drives the motors.

Components required

• Robot chassis with two DC motors
• Transmitter microcontroller
• Receiver microcontroller
• Accelerometer sensor
• RF modules or Bluetooth modules
• Motor driver IC
• Battery packs for robot and transmitter

Block diagram

Working

The accelerometer outputs voltages representing tilt. The transmitter controller converts them to direction commands and sends them over RF or Bluetooth. The receiver decodes the commands and sets motor driver inputs to move the robot forward, backward, left or right. Neutral hand position stops the robot.

Applications

• Educational robotics project
• Gesture based control experiments
• Tech fair demonstrations
• Base for advanced autonomous robots