Gesture Controlled Robot Using Arduino

Building a hand gesture-controlled robot using Arduino, MPU6050 accelerometer, nRF24L01 transceiver pair, and L293D motor driver module is an exciting project that combines sensor technology, wireless communication, and motor control to create an interactive experience. Let’s go through the steps to build and understand how this robot works.

Required Components:

• Arduino Uno (Transmitter & Receiver)
• Arduino Nano (Transmitter)
• MPU6050 Accelerometer and Gyroscope
• nRF24L01 Transceiver Pair
• L293D Motor Driver Module
• 2WD Acrylic Chassis Kit
• 7.4V Li-ion Battery/9V Battery
• Connecting Wires

How it Works:

The project consists of two main circuits: the Transmitter and the Receiver.

Transmitter Circuit:

• Components: Arduino Nano, MPU6050 Accelerometer, nRF24L01 Transceiver
• The MPU6050 sensor detects hand gestures, translating them into electrical signals.
• Arduino Nano processes these signals and sends them wirelessly to the receiver using the nRF24L01 module.

Receiver Circuit:

• Components: Arduino Uno, nRF24L01 Transceiver, L293D Motor Driver Module, 2 DC Motors
• Arduino Uno receives the signals from the transmitter via the nRF24L01 module.
• Based on the received signals, the Arduino Uno commands the movement of the DC motors through the motor driver module.

Gesture Interpretation:

• If acceleration along the X-axis is less than 340, the robot moves forward.
• If acceleration along the X-axis is more than 360, the robot moves backward.
• If acceleration along the Y-axis is less than 140, the robot turns left.
• If acceleration along the Y-axis is more than 160, the robot turns right.
• If none of the above conditions are met, the robot stops.

Circuit Diagram:

• Transmitter Circuit: Connect Arduino Nano, MPU6050, and nRF24L01 as per the provided circuit diagram.
• Receiver Circuit: Connect Arduino Uno, nRF24L01, L293D Motor Driver Module, and DC Motors according to the provided diagram.

Code Explanation:

• Transmitter Side: Reads MPU6050 sensor data, maps it to gesture directions, and sends the data wirelessly to the receiver.
• Receiver Side: Receives data from the transmitter, interprets gestures, and controls motor movements accordingly.

Testing:

• Once the hardware is assembled and the code is uploaded to both the transmitter and receiver Arduinos, manipulate the MPU6050 accelerometer to control the robot’s movements.

Note:

• Ensure all required libraries are installed for both transmitter and receiver codes.
• Calibrate the MPU6050 if necessary for accurate readings.
• Modify motor control logic in the receiver code as per your motor driver configuration.
• Double-check wiring connections to match pin assignments in the code.

By following these steps, you can build and test a fascinating hand gesture-controlled robot that will impress your friends and family with its interactive functionality. Enjoy the process of creating and experimenting with this innovative project!

Find a more detailed guide here: Gesture Controlled Robot Using Arduino or GitHub