Learn how to build an ESP32-based Air Mouse that uses hand gestures for controlling the mouse pointer. This project combines ESP32, Python, and OpenCV to create a contactless, gesture-controlled input device. Read more : https://circuitdigest.com/microcontroller-projects/esp32-air-mouse-using-hand-gesture-control

1. An Easy Approach to Contactless Remote Control
Author
Rithik Krisna

2. ESP32 Air Mouse with
Hand Gesture Control
Learn how to control the
mouse pointer using hand
gestures.
It uses an ESP32
microcontroller that
communicates with a PC via
serial.
Hand gestures are detected
using a webcam and Python +
OpenCV, then interpreted as
mouse movement.

3. Components &
Circuit Design
ESP32 Dev Board
USB to UART Converter
PC or Laptop
Webcam
Jumper wires &
breadboard
Once these components are
gathered, the next step is
wiring them together following
the circuit diagram.

4. Assembly & Working
ESP32 is connected to the PC via
USB for power and serial data.
Webcam captures hand gestures in
real time.
Python script processes video
frames to detect gestures.
Detected gestures are sent over
serial to ESP32, which moves the
mouse pointer accordingly.

5. How Does It Work?
Python script uses OpenCV to
detect the contour of the hand.
Based on hand
position/movement, directional
gestures are identified.
Detected gesture directions (UP,
DOWN, LEFT, RIGHT) are sent to
ESP32 via serial.
ESP32 maps the gesture
direction to cursor movement
using Mouse library functions.

6. Use Cases and Applications
Touchless control
Accessibility aid for users
with limited mobility
Smart home interfaces
Contactless remote
control for media or
presentations.

7. For a more in-depth tutorial,
check out this article:
https://circuitdigest.com/microcontroll
er-projects/esp32-air-mouse-using-
hand-gesture-control
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