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  3. ESP32-CAM WiFi + Bluetooth Development Board with MicroSD Card Slot (Without Camera Module)
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मूल्य सूची: Retail Price (B2C) मूल्य सूची
मूल्य सूची: Retail Price (B2C) मूल्य सूची
ESP32-CAM WiFi + Bluetooth Development Board with MicroSD Card Slot (Without Camera Module)

ESP32-CAM WiFi + Bluetooth Development Board with MicroSD Card Slot (Without Camera Module)

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SpecificationDetails
MicrocontrollerESP32-S (Dual-core 32-bit)
Wireless802.11b/g/n WiFi + Bluetooth 4.2 BLE
StorageIntegrated MicroSD Card Slot (Supports up to 4GB)
RAMInternal 520KB + External 4MB PSRAM
Flash32Mbit (4MB)
Camera InterfaceFPC Connector (Supports OV2640, OV7670, etc.)
Operating Voltage5V Input (Onboard 3.3V Regulator)
Price
₹ 419.49 ₹ 419.49
(Tax included)

Product Description

The ESP32-CAM is unique because it includes 4MB of external PSRAM, which is essential for handling the large memory buffers required for image processing and web streaming. Even without a camera attached, this board functions as a high-powered ESP32 with mass storage capabilities via the MicroSD slot. It features a built-in LED flash (which can also be used as a high-brightness indicator) and an onboard PCB antenna, though it also includes an IPEX connector for an external antenna if more range is needed.

Key Features

  • Massive Memory: The 4MB PSRAM allows for complex tasks that standard ESP32 boards might struggle with, such as serving large web pages or processing data arrays.

  • Integrated SD Storage: The built-in MicroSD slot makes it easy to save sensor logs, configuration files, or captured media directly to a card.

  • Dual Wireless Stack: Supports WiFi for internet uploads and Bluetooth/BLE for local smartphone configuration.

  • Ultra-Compact Form Factor: Measuring only 27mm x 40.5mm, it fits into the smallest project enclosures and wearable devices.

  • Versatile I/O: Despite its size, it breaks out essential pins for UART, SPI, and I2C, allowing it to interface with a variety of external sensors.

Technical Details

  • Deep Sleep Current: ~6mA (Higher than standard ESP32 due to PSRAM).

  • UART Serial: Requires an external FTDI/USB-to-Serial converter for programming.

  • Flash LED: Connected to GPIO 4 (Double-functions as a high-power LED).

Prototyping and Engineering Tips from Robogears

  • The Programming Hack: Unlike most dev boards, the ESP32-CAM does not have a USB port. You must use an FT232R USB-to-Serial Adapter. Connect U0R to TX, U0T to RX, and ensure you use a common ground.

  • Enter Flashing Mode: To upload code, you must bridge GPIO 0 to GND before powering on or resetting the board. Once the upload is complete, remove the bridge and reset the board to run your code.

  • Power Stability: The ESP32-CAM is very sensitive to power fluctuations, especially when using WiFi or an SD card. Use a high-quality 5V/2A power source connected to the 5V and GND pins for stable operation.

  • MicroSD Pin Conflict: Note that the SD card uses several GPIO pins (including GPIO 4, 12, 13, 14, and 15). If you are using the SD card slot, these pins cannot be used for other sensors.

Package Includes

  • 1 x ESP32-CAM Development Board (Without Camera Module)

Disclaimer

This product does not include the OV2640 camera module. You will need to purchase the sensor separately to utilize the image capture features.