ESP32-C3 Air Mouse

A Gyroscope Based Mouse Built Using the Esp32 C3 Super mini and the MPU6050. Since project uses a BLE library using a 500mah battery will make it last up to 5-6 hours on continuous use. I used a 500mah LIPO Battery along with a Tp4056 for this project

Hardware

Component
ESP32-C3 Super Mini
MPU6050
5x momentary push buttons

Wiring

Signal	ESP32-C3 Pin
Left click	GPIO5
Right click	GPIO6
Middle click	GPIO20
Scroll up	GPIO8
Scroll down	GPIO9
MPU6050 SDA	GPIO4
MPU6050 SCL	GPIO3
MPU6050 VCC	3V3
MPU6050 GND	GND

Simple Wiring Diagram

Libraries

Install via the Arduino IDE Library Manager:

• NimBLE-Arduino (by h2zero) — v2.3.x or newer

The MPU6050 is read directly over raw I2C registers, so no separate MPU6050 library is required.

Flashing

1. Install the ESP32 board package and select your ESP32-C3 board in the Arduino IDE.
2. Install NimBLE-Arduino from the Library Manager.
3. Wire everything per the table above.
4. Open the .ino file and flash it to the board.
5. Open Serial Monitor at 115200 baud to watch calibration/connection status.

Pairing

Once flashed, the board shows up as "ESP32 Air Mouse". Pair it from your computer or phone's Bluetooth settings like any other Bluetooth mouse.

Troubleshooting

• MPU6050 not found at boot: double-check wiring against the table above, particularly SDA/SCL.
• Choppy/jumpy cursor: check smoothFactor and MOTION_SEND_INTERVAL_MS first. If it persists, check your OS's mouse settings (e.g. "Enhance pointer precision" on Windows).

Photos