Files

• README.md
• GestureLamp.ino

Use an ESP32 + MPU-6050 IMU to control a lamp by hand gestures:

• Tilt up/down → increase/decrease brightness
• Shake (quick jerk) → toggle on/off
  Every brightness change is advertised over BLE so your phone can display real-time status.

• ESP32 Dev Board (e.g. NodeMCU-32S)
• MPU-6050 6-axis IMU breakout
• N-channel MOSFET (IRLZ44N or similar)
• Lamp or 12 V LED strip
• 12 V DC power supply (for lamp)
• 5 V USB supply (for ESP32 & MPU-6050)
• 10 kΩ resistor (MOSFET gate pulldown)
• (optional) 100 Ω resistor in series with MOSFET gate
• Breadboard & jumper wires

MPU-6050         ESP32
┌─────────┐     ┌────────┐
│ VCC  ──► 5V   │ VIN    │
│ GND  ──► GND  │ GND    │
│ SDA  ──► 21   │ (I2C)  │
│ SCL  ──► 22   │ (I2C)  │
└─────────┘     └────────┘

Lamp Strip (12 V)      ESP32 + MOSFET
┌─────────────┐        ┌─────────┐
│ +12 V ───► +12 V     │         │
│ –     ───► Drain    │ IRLZ44N │
└─────────────┘        │ Gate◄─┬─► GPIO 23
                       │ Src ─►└─ GND
                       └─────────┘
• Put a 10 kΩ between Gate and GND.  
• (Optional) 100 Ω series on Gate for noise suppression.

1. In Arduino IDE add ESP32 board definitions.
2. Install libraries via Library Manager:
   • MPU6050 (I2Cdevlib by Jeff Rowberg)
   • BLEDevice.h (built-in with ESP32 support)
3. Save this folder as GestureLamp/ containing:
   • README.md
   • GestureLamp.ino
4. Select NodeMCU-32S (or your ESP32) and correct COM port.

1. Power the ESP32 via USB and lamp via 12 V supply.
2. On boot the ESP starts advertising BLE service “GestureLamp”.
3. Pair from a generic BLE app (nRF Connect, LightBlue).
4. Subscribe to the Brightness Characteristic.
5. Make gestures:
   • Tilt device up/down → lamp brightens/dims by 5%.
   • Shake device (fast jerk) → toggle lamp ON/OFF.
6. Watch lamp change and BLE notifications update your phone in real time.

Say continua to move on to project #9!