ESP32 CAM Development Board with OV2640 Module

Features:

• Built-in Wi-Fi and Bluetooth connectivity.
• Supports WiFi image upload and remote streaming.
• Compact board size suitable for embedded applications.
• Supports multiple sleep modes for low power consumption.
• Integrated LwIP and FreeRTOS support.
• Compatible with OV2640 and OV7670 camera modules.
• Supports STA/AP/STA+AP Wi-Fi modes.
• Supports Smart Config and AirKiss network setup.
• High-performance dual-core processor up to 160MHz.
• Supports local and remote firmware updates (FOTA).
• ESP32-CAM-MB programmer includes CH340C USB-to-Serial chip.
• Dedicated RESET and BOOT buttons for easy programming.

Principle of Work:

The ESP32-CAM works by combining wireless networking, image processing, and embedded control into a single module.

• Image Capture: The OV2640 camera captures images and video data.
• Processing: The ESP32 processor handles image encoding and networking tasks.
• Wireless Communication: Wi-Fi and Bluetooth allow remote transmission and control.
• Storage: Images can be stored locally on a microSD card.
• Firmware Control: Programs can be uploaded through the USB programmer board.

Pinout of the Module:

First Time Starting:

• Connect the ESP32-CAM module to the ESP32-CAM-MB programmer board.
• Install the CH340C USB driver on your computer.
• Open Arduino IDE.
• Add the ESP32 Board Manager URL in Preferences:

https://raw.githubusercontent.com/espressif/arduino-esp32/gh-pages/package_esp32_index.json

• Go to Tools > Board > Boards Manager.
• Search for ESP32 by Espressif Systems and install it.
• Select AI Thinker ESP32-CAM from the board list.
• Select the correct COM port.
• Open an ESP32-CAM example sketch such as CameraWebServer.
• Enter your Wi-Fi SSID and password.
• Upload the code.
• Open Serial Monitor to view the assigned IP address.
• Open the IP address in a web browser to access the camera stream.

Code:

Basic ESP32-CAM Camera Web Server Example:

#include "esp_camera.h"
#include <WiFi.h>

const char* ssid = "YOUR_WIFI_NAME";
const char* password = "YOUR_WIFI_PASSWORD";

void startCameraServer();

void setup() {
  Serial.begin(115200);

  camera_config_t config;
  config.ledc_channel = LEDC_CHANNEL_0;
  config.ledc_timer = LEDC_TIMER_0;

  esp_camera_init(&config);

  WiFi.begin(ssid, password);

  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }

  Serial.println("");
  Serial.println("WiFi connected");

  startCameraServer();

  Serial.print("Camera Ready! Use 'http://");
  Serial.print(WiFi.localIP());
  Serial.println("' to connect");
}

void loop() {
  delay(1);
}

Applications:

• Wireless surveillance systems.
• Smart doorbell and security projects.
• IoT monitoring systems.
• Remote image capture applications.
• Face recognition and AI projects.
• Video streaming systems.

Technical Details:

• IO Ports: 9
• Operating Voltage: 5V
• Recommended Power Supply: 5V 2A
• Flash Memory: 32Mbit
• SRAM: 520KB
• PSRAM: 4MB
• Wi-Fi Standard: 802.11b/g/n/e/i
• Bluetooth: BLE 4.2 BR/EDR
• Frequency Range: 2412~2484MHz
• Maximum TF Card Support: 4GB
• Interfaces: UART, SPI, I2C, PWM
• Default Baud Rate: 115200bps
• Antenna Gain: 2dBi
• Image Formats: JPEG, BMP, Grayscale
• Dimensions: 27mm x 40mm