ESP32-CAM WiFi Bluetooth Module with OV2640 Camera ESP32 Camera Board IoT - Image 1
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ESP32-CAM WiFi Bluetooth Module with OV2640 Camera ESP32 Camera Board IoT

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Description

📸 ESP32-CAM WiFi Bluetooth Development Board with OV2640 Camera – ESP32 Camera Module for IoT, Smart Home & AI Projects | AuscomTech

High-Performance ESP32 Camera Module for IoT, AI Vision, Robotics & Wireless Video Streaming

The ESP32-CAM Development Board with OV2640 Camera is one of the most versatile and powerful IoT camera solutions available. Combining the ESP32 dual-core processor, integrated WiFi + Bluetooth, and a 2MP OV2640 camera, this module is perfect for wireless video, AI-based projects, smart security devices, robotics vision, QR scanning, and more.

Compact, efficient, and feature-rich, the ESP32-CAM is ideal for makers, students, engineers, and AuscomTech customers building professional IoT systems.

⚙️ Key Features

🚀 High-Performance ESP32 Processor

  • Dual-core Xtensa® 32-bit LX6 CPU

  • Up to 240 MHz clock speed

  • Up to 600 DMIPS processing power

🧠 Generous Memory

  • 520 KB SRAM (internal)

  • 4 MB PSRAM (external) for camera buffers, AI tasks, streaming, etc.

📡 WiFi + Bluetooth

  • 2.4 GHz Wi-Fi (802.11 b/g/n)

  • Bluetooth Classic & BLE

📸 Included Camera: OV2640 (2MP)

  • High-quality imaging

  • Supports JPEG, RGB, YUV output

  • Supports auto-exposure & auto-white-balance

  • Supports built-in flashlight/LED flash

🔌 Rich Connectivity Interfaces

  • UART, SPI, I²C, PWM, ADC, DAC

  • GPIO for sensors, relays, triggers, and robotics

  • TF/MicroSD card slot for photo/video storage

🌐 WiFi Image Upload + Streaming

  • Real-time image upload

  • Live MJPEG/streaming (perfect for DIY IP cameras)

  • Remote surveillance and monitoring

💾 TF Card Support

  • Log images

  • Store video

  • Save recognition data

🔋 Energy Efficient

  • Deep sleep current as low as 6 mA

  • Perfect for battery-powered projects

🧰 Built-In Frameworks

  • LwIP

  • FreeRTOS

  • Perfect for multitasking and advanced IoT apps

🛰 Multiple Operating Modes

  • STA (client)

  • AP (hotspot)

  • STA + AP

  • Supports Smart Config & AirKiss one-touch WiFi setup

🧱 Compact DIP Design

  • Only 27 × 40.5 mm

  • Easy to mount on PCB backplanes

  • Ideal for mass production

🧩 Applications

  • Smart home IoT cameras

  • Wireless surveillance systems

  • QR code recognition systems

  • Object detection / AI projects

  • Pet / wildlife cameras

  • FPV robotics vision

  • Industrial monitoring & automation

  • Doorbell cameras / access control

  • Environmental monitoring stations

  • Remote datalogging with photo capture

📊 Technical Specifications

Feature Details
Processor ESP32 Dual-Core 32-bit LX6, up to 240 MHz
SRAM 520 KB
PSRAM 4 MB
Wireless WiFi 2.4 GHz + Bluetooth / BLE
Camera Interface OV2640 / OV7670 supported
External Storage TF/MicroSD card slot
Interfaces UART, SPI, I²C, PWM, ADC, DAC
Sleep Current ~6 mA (Deep Sleep)
Operating Modes AP, STA, AP+STA
Size 27 × 40.5 mm
Power Supply 5V (via 5V pin)

📦 Package Includes

  • 1 × ESP32-CAM Development Board

  • 1 × OV2640 2MP Camera Module

📌 Code Examples & Usage – ESP32-CAM WiFi & Bluetooth Camera Module

📋 Overview

The ESP32-CAM is a compact Wi-Fi + Bluetooth microcontroller with an onboard camera interface, designed for low-cost image capture and streaming applications.

It is ideal for:

  • Wi-Fi cameras & live streaming

  • Smart doorbells

  • Motion-triggered cameras

  • IoT image capture

  • Home automation & monitoring

⚠ Important:
The ESP32-CAM does NOT have a built-in USB interface.
A USB-to-Serial adapter is required for programming.

⚙ Key Features

  • MCU: ESP32 (dual-core)

  • Wireless: Wi-Fi + Bluetooth

  • Camera support: OV2640 (most common)

  • Operating voltage: 5V input

  • Logic level: 3.3V

  • Onboard microSD card slot

  • Ultra-compact form factor

⚠ IMPORTANT – Read Before You Start

🚨 No USB port onboard

  • Requires USB-to-Serial adapter (FTDI / CH340 / CP2102)

🚨 Boot mode jumper required

  • GPIO0 must be pulled LOW during upload

  • Must be released (HIGH) to run the sketch

🚨 Power matters

  • Camera + Wi-Fi draws high current

  • Use a stable 5V supply (≥1A recommended)

📌 Most ESP32-CAM issues are caused by insufficient power.

🔌 Programming Wiring (USB-to-Serial Adapter)

ESP32-CAM Pin USB-Serial Adapter
5V 5V
GND GND
U0R TX
U0T RX
IO0 GND (for upload only)

📌 RX ↔ TX must be crossed
📌 Remove IO0-GND connection after uploading

🛠 Arduino IDE Setup (ESP32)

1️⃣ Install ESP32 Board Support

Arduino IDE → File → Preferences

Add to Additional Boards Manager URLs:

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

Then:

  • Tools → Board → Boards Manager

  • Install esp32 by Espressif Systems

2️⃣ Board Settings (Recommended)

  • Board: AI Thinker ESP32-CAM

  • Upload Speed: 115200

  • Flash Frequency: 40MHz

  • Flash Mode: QIO

  • Partition Scheme: Huge APP (3MB No OTA)

📌 If upload fails, slow baud rate to 115200.

🧪 1️⃣ First Test – Camera Web Server (Official Example)

This is the best first test and proves everything works.

In Arduino IDE:

File → Examples → ESP32 → Camera → CameraWebServer

Required Changes

  1. Select AI Thinker ESP32-CAM

  2. Uncomment:

#define CAMERA_MODEL_AI_THINKER

  1. Enter your Wi-Fi credentials:

const char* ssid = "YOUR_WIFI";
const char* password = "YOUR_PASSWORD";

⏫ Upload Procedure (CRITICAL)

  1. Connect IO0 → GND

  2. Click Upload

  3. When upload finishes:

    • Disconnect IO0 from GND

  4. Press RESET on the ESP32-CAM

  5. Open Serial Monitor at 115200 baud

  6. Copy the IP address shown

📌 Open the IP address in your browser to view the camera stream.

📷 Camera Web Interface Features

✔ Live video stream
✔ Still image capture
✔ Resolution selection
✔ Brightness / contrast control
✔ Flash LED (if fitted)

🧪 2️⃣ Take Still Photos & Save to SD Card

The ESP32-CAM can save images directly to a microSD card.

Common uses:

  • Time-lapse photography

  • Motion capture

  • Evidence logging

📌 SD card uses SPI mode, not SDIO.

💡 Flash LED Control Note

Many ESP32-CAM boards include a bright white LED connected to GPIO4.

Example:

pinMode(4, OUTPUT);
digitalWrite(4, HIGH); // LED ON

⚠ LED draws significant current.

🧠 Common Issues & Fixes

Issue Cause Fix
Brownout reset Weak power Use 5V ≥1A supply
Upload fails IO0 not LOW Ground IO0 during upload
No camera image Wrong board Select AI Thinker ESP32-CAM
Blank page Wrong IP Check Serial Monitor
Reboots on stream Power dip Better PSU / shorter cable

Additional information

Weight 30 g
Dimensions 260 × 160 × 20 mm

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