ESP32 S-CAM MB WiFi + Bluetooth Development Board with OV3660 3MP Camera Module

Specifications

• Core Processor: ESP32-S (Dual-Core 32-bit LX6)
• Camera Sensor: OV3660 (Upgraded 3MP)
• Max Resolution: 2048 x 1536 (QXGA)
• Field of View: Standard 65° (Lens dependent, replaceable)
• Connectivity: WiFi 802.11 b/g/n + Bluetooth 4.2 / BLE
• Interface Board: ESP32-CAM-MB (Micro-USB to Serial via CH340)
• Storage: Onboard TF Card Slot (Supports up to 4GB)
• Flash Memory: 4MB
• PSRAM: 8MB (Critical for high-res streaming)
• Power Input: 5V via Micro-USB (recommended) or 5V/3.3V pins

Applications

• Smart Home Security: DIY Video Doorbell with Telegram notifications.
• Industrial Monitoring: Wireless meter reading (OCR) using the high-res 3MP sensor.
• Agricultural Tech: Plant health monitoring (timelapse photography saved to SD card).
• Robotics: First-Person View (FPV) WiFi robot controller.
• Retail: Low-cost QR Code and Barcode scanner.

Project Evolution
       From Blink to Biometrics

• Prerequisites (The "Before"): If you have mastered the basic NodeMCU or Arduino Uno, you understand simple I/O. However, those boards lack the RAM and speed for video processing.
• The Upgrade (What this unlocks): The ESP32-CAM MB unlocks the world of Edge AI. You can now process images directly on the device.

• Face Recognition: Identify authorized personnel.
• Color Tracking: Build a robot that follows red objects.
• Web Server Streaming: Broadcast live video to your phone over the local network.
• Effort Level: Intermediate. While the hardware is plug-and-play, working with video streams requires understanding HTTP buffers and IP addresses.

Virtual Technician: Wiring & Setup

• Warning: The ESP32-CAM is power-hungry. If using without the USB shield, ensure your 5V power supply can deliver at least 2A steady current.

      Using the MB Shield (Recommended):

• Mount: Gently press the ESP32-CAM module onto the MB Shield. Ensure pins align correctly.
• Connect: Plug a Micro-USB data cable into the Shield and your PC.
• Drivers: Install the CH340 drivers if not already present on your PC.
• Arduino IDE: Select "AI Thinker ESP32-CAM" as the board.

      Pinout Mapping (if using external generic sensors):

• GPIO 4: On-board Flashlight (Bright White LED)
• GPIO 12, 13, 15: Used by SD Card (Avoid using for other sensors if SD is active)
• GPIO 0: Cam Data (Used internally)

Package Includes:

• 1 x ESP32-CAM MB WiFi + Bluetooth Development Board with OV3660 3MP Camera Module

Frequently Asked Questions (Technical FAQ)

• Q: How does the OV3660 differ from the standard OV2640?
  A: The OV3660 offers 3MP resolution (vs 2MP) and significantly better color saturation and low-light sensitivity than the older OV2640.
• Q: Do I need an FTDI adapter to program this?
  A: No. The included "MB" Test Board has a built-in USB-to-Serial chip. You just need a Micro-USB cable.
• Q: Why does my board reset when WiFi turns on?
  A: This is a "brownout." Ensure you are using a high-quality USB cable and a USB port that supplies a full 500mA-1A.
• Q: Can I change the lens on this module?
  A: Yes, the lens is screwed into a standard M12 mount. You can unscrew it (break the glue seal gently) and swap it for a fisheye or telephoto lens.
• Q: Does this board support 5GHz WiFi?
  A: No, the ESP32 chip only supports 2.4GHz WiFi networks.
• Q: What is the maximum SD card size supported?
  A: We recommend 4GB class 10 cards, though some users report success with up to 32GB (FAT32 formatted).
• Q: Can I use the pins while the camera is active?
  A: Most pins are consumed by the Camera and SD card. Only a few pins (like GPIO 16, 3, 1) are free, and usage is restricted.
• Q: Which board definition should I choose in Arduino IDE?
  A: Select "AI Thinker ESP32-CAM".
• Q: Does the board come with the code pre-flashed?
  A: It typically comes with a demo blink or test streaming sketch, but you should flash your own firmware for your specific project.
• Q: Is the antenna internal or external?
  A: It uses an on-board PCB antenna. There is an IPEX connector, but you must move a tiny resistor (0-ohm link) to switch to the external antenna.
• Q: Can I use this for video streaming over the internet?
  A: Yes, but you will need to set up port forwarding on your router or use a service like Ngrok or Blynk.
• Q: How do I power the board without the USB shield?
  A: You can supply 5V to the 5V pin and GND. Do not supply 5V to the 3.3V pin, or you will destroy the chip.
• Q: Does it support face recognition out of the box?
  A: The hardware supports it, and the "CameraWebServer" example code in Arduino IDE includes a basic face recognition demo.
• Q: What is the framerate at max resolution?
  A: At full 3MP, framerate is low (approx 5-6 fps). For streaming, we recommend SVGA (800x600) or lower for smooth video.
• Q: Is the CH340 driver required for the Test Board?
  A: Yes, Windows and Mac users usually need to install the CH340 / CH341SER driver.
• Q: Can I use Python/MicroPython on this?
  A: Yes, MicroPython has excellent support for the ESP32, including camera modules.
• Q: Why is the video image red/tinted?
  A: The OV3660 settings might need tuning in code. Ensure you select the correct sensor definition in your configuration file.
• Q: Does it have PSRAM?
  A: Yes, the module includes 4MB or 8MB of PSRAM, which is essential for handling high-resolution image buffers.
• Q: Can I power it with a LiPo battery?
  A: Yes, connect the LiPo (3.7V-4.2V) to the 3.3V/5V pin (check regulator specs) or use a boost converter to 5V.