ESP32-CAM Web Stream

This project sets up an ESP32-CAM board as a web server to stream video over WiFi and broadcasts its status via MQTT.

Hardware Setup

Board Information

• Board: ESP32-CAM-MB
• Camera Module: OV2640 (standard with ESP32-CAM)

Pin Configuration

The following pins are used for the camera module:

PWDN_GPIO_NUM: 32
RESET_GPIO_NUM: -1 (not used)
XCLK_GPIO_NUM: 0
SIOD_GPIO_NUM: 26
SIOC_GPIO_NUM: 27
Y9_GPIO_NUM: 35
Y8_GPIO_NUM: 34
Y7_GPIO_NUM: 39
Y6_GPIO_NUM: 36
Y5_GPIO_NUM: 21
Y4_GPIO_NUM: 19
Y3_GPIO_NUM: 18
Y2_GPIO_NUM: 5
VSYNC_GPIO_NUM: 25
HREF_GPIO_NUM: 23
PCLK_GPIO_NUM: 22

Configuration

WiFi Configuration

1. Copy config.h.template to config.h
2. Edit config.h and replace the following placeholders with your WiFi credentials:
   • YOUR_WIFI_SSID: Your WiFi network name
   • YOUR_WIFI_PASSWORD: Your WiFi password

MQTT Configuration

In the same config.h file, configure your MQTT settings:

• mqtt_server: IP address of your MQTT broker
• mqtt_port: Port of your MQTT broker (default: 1883)
• mqtt_username: MQTT username (optional)
• mqtt_password: MQTT password (optional)

Usage

After uploading the code and connecting to WiFi:

1. The ESP32-CAM will print its IP address to the serial monitor
2. Open a web browser and navigate to http://<ESP32_IP_ADDRESS>
3. The video stream will be available at http://<ESP32_IP_ADDRESS>/stream
4. The device will automatically connect to the MQTT broker and publish its status to the esp32-cams topic

MQTT Messages

The device publishes JSON messages to the esp32-cams topic in the following format:

{
    "ip": "192.168.1.100",
    "status": "online"
}

Troubleshooting

• If the camera fails to initialize, check the serial monitor for error codes
• Ensure the camera module is properly connected to the ESP32-CAM board
• Make sure your WiFi credentials are correct in config.h
• The board requires a stable power supply (5V, 2A recommended)
• If MQTT connection fails, check:
  • MQTT broker is running and accessible
  • Credentials are correct
  • Network connectivity