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ESP32-CAM Camera Module

The ESP32-CAM is a small-size, low-power camera module based on ESP32. It comes with an OV2640 camera and provides an onboard TF card slot. This board has 4MB PSRAM which is used for buffering images from the camera into video streaming or other tasks and allows you to use higher quality in your pictures without crashing the ESP32. It also comes with an onboard LED for flash and several GPIOs to connect peripherals.

 

ESP32-CAM Pinout

Pin No.

Name

Type

Function

1

5V

POWER

5V Supply

2

GND

POWER

Ground pin

3

IO12

I/O

GPIO 12/MicroSD DATA2

4

IO13

I/O

GPIO 13/MicroSD DATA3

5

IO15

I/O

GPIO 15/MicroSD CMD

6

IO14

I/O

GPIO 14/MicroSD CLK

7

IO2

I/O

GPIO 2/MicroSD DATA0

8

IO4

I/O

GPIO 12/MicroSD DATA1/ Flash

9

GND

POWER

Ground pin

10

UOT/IO1

I/O

UART TX /GPIO 1

11

UOR/IO3

I/O

UART RX /GPIO 3

12

VCC

POWER

5V/3.3V

13

GND

POWER

Ground pin

14

IO0

I/O

GPIO 0 / Boot select

15

IO16

I/O

GPIO 16

16

3V3

POWER

3.3V Supply

 

Camera Connections

The connections between the camera and the ESP32-CAM AI-Thinker are shown in the following table.

OV2640 CAMERA

ESP32

Variable name in code

D0

GPIO 5

Y2_GPIO_NUM

D1

GPIO 18

Y3_GPIO_NUM

D2

GPIO 19

Y4_GPIO_NUM

D3

GPIO 21

Y5_GPIO_NUM

D4

GPIO 36

Y6_GPIO_NUM

D5

GPIO 39

Y7_GPIO_NUM

D6

GPIO 34

Y8_GPIO_NUM

D7

GPIO 35

Y9_GPIO_NUM

XCLK

GPIO 0

XCLK_GPIO_NUM

PCLK

GPIO 22

PCLK_GPIO_NUM

VSYNC

GPIO 25

VSYNC_GPIO_NUM

HREF

GPIO 23

HREF_GPIO_NUM

SDA

GPIO 26

SIOD_GPIO_NUM

SCL

GPIO 27

SIOC_GPIO_NUM

POWER PIN

GPIO 32

PWDN_GPIO_NUM

 

Features

  • Onboard ESP32-S module, supports WiFi + Bluetooth
  • OV2640 camera with flash
  • Onboard TF card slot, supports up to 4G TF card for data storage
  • Supports WiFi video monitoring and WiFi image upload
  • Supports multi sleep modes, deep sleep current as low as 6mA
  • Control interface is accessible via pin-header, easy to be integrated and embedded into user products

 

Specifications

  • WIFI module: ESP-32S
    • Processor: ESP32-D0WD
  • Built-in Flash: 32Mbit
  • RAM: Internal 512KB + External 4M PSRAM
  • Antenna: Onboard PCB antenna
  • WiFi protocol: IEEE 802.11 b/g/n/e/i
  • Bluetooth: Bluetooth 4.2 BR/EDR and BLE
  • WIFI mode: Station / SoftAP / SoftAP+Station
  • Security: WPA/WPA2/WPA2-Enterprise/WPS
  • Output image format: JPEG (OV2640 support only), BMP, GRAYSCALE
  • Supported TF card: up to 4G
  • Peripheral interface: UART/SPI/I2C/PWM
  • IO port: 9
  • UART baudrate rate: default 115200bps
  • Power supply: 5V
  • Transmitting power:
    • 802.11b: 17 ±2dBm(@11Mbps)
    • 802.11g: 14 ±2dBm(@54Mbps)
    • 802.11n: 13 ±2dBm(@HT20,MCS7)
  • Reception sensitivity:
    • CCK,1Mbps: -90 dBm
    • CCK,11Mbps: -85 dBm
    • 6Mbps(1/2 BPSK): -88 dBm
    • 54Mbps(3/4 64-QAM): -70 dBm
    • HT20,MCS7(65Mbps, 72.2Mbps): -67 dBm
  • Power consumption:
    • Flash off: 180mA@5V
    • Flash on and brightness max: 310mA@5V
    • Deep-Sleep: as low as 6mA@5V
    • Modern-Sleep: as low as 20mA@5V
    • Light-Sleep: as low as 6.7mA@5V
  • Operating temperature: -20 ℃ ~ 85 ℃
  • Storage environment: -40 ℃ ~ 90 ℃, <90%RH
  • Dimensions: 40.5mm x 27mm x 4.5mm

 

ESP32-CAM Schematics

The following figure shows the schematic diagram for the ESP32-CAM.

ESP32 Cam Schematics

 

Applications

The ESP32-CAM suit for IoT applications such as:

  • Smart home devices image upload
  • Wireless monitoring
  • Intelligent agriculture
  • QR wireless identification
  • facial recognition

 

2D Model and Dimensions

ESP32 Cam 2D Model and Dimensions

Component Datasheet

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