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The ESP32-CAM is a compact camera module that can operate independently as a minimum system, in a footprint of only 40 x 27 mm. It pairs an ESP32 with an OV2640 2 megapixel camera, and the maker markets it as the smallest 802.11 b/g/n Wi-Fi BT SoC module, aimed at smart home devices, industrial wireless control and wireless monitoring.
The low-power 32-bit CPU runs at up to 160 MHz, with 520 KB of on-chip SRAM and 4 MB of external PSRAM for buffering camera frames, and the board exposes UART, SPI, I2C, PWM, ADC and DAC.
Input voltage is 5 V and the operating temperature range is -20 to 85 C. WiFi is 802.11 b/g/n and Bluetooth is 4.2 BR/EDR plus BLE. UART runs at 115200 bps by default, and the camera can output JPEG, BMP or grayscale images. Power consumption is 180 mA with the LED off, 310 mA with the LED at maximum and 6 mA in deep sleep. It supports a TF card up to 4 GB for local storage.
Power the module from a clean, adequately rated supply, since radio and camera modules draw current in short bursts that a weak supply cannot follow. Keep the antenna clear of metal and ground planes, and start with the maker's example code before writing your own.
Makers building simple face-recognition demos, WiFi security cameras, doorbell projects and any IoT device that needs a small, self-contained camera with wireless connectivity.
An OV2640, 2 megapixel camera with a built-in flash.
Yes, Bluetooth 4.2 BR/EDR and BLE alongside 802.11 b/g/n WiFi.
520 KB of internal SRAM plus 4 MB of external PSRAM.
Yes, on a TF card up to 4 GB.
About 6 mA.
| Brand | Generic |
|---|---|
| Wireless Connectivity | WiFi + Bluetooth |
| Wireless Connectivity | WiFi + Bluetooth |
| Selling unit | PCS |
