ESP32-CAM Camera Boards: Pin and GPIOs Assignment Guide

ESP32 development boards with camera are becoming popular with the maker community. There are different models of ESP32 Camera boards with different features. Each ESP32 Camera dev board uses different GPIOs to connect to the camera. In this guide we’ll show you the pin definition to include in your code for each board.

ESP32-CAM Camera Boards Pin and GPIOs Assignment Guide

This guide covers the pin/GPIOs assignment for the following ESP32 Camera Development boards:

For a detailed comparison of the different ESP32 Camera Boards, read:

ESP32-CAM AI-Thinker Pin Assignment

The following image shows the pinout diagram for the ESP32-CAM AI-Thinker.

ESP32-CAM AI-Thinker Module Board Pins GPIO

This is the OV2640 camera pin assignment for the ESP32-CAM AI-Thinker board:

#define PWDN_GPIO_NUM     32
#define RESET_GPIO_NUM    -1
#define XCLK_GPIO_NUM      0
#define SIOD_GPIO_NUM     26
#define SIOC_GPIO_NUM     27
#define Y9_GPIO_NUM       35
#define Y8_GPIO_NUM       34
#define Y7_GPIO_NUM       39
#define Y6_GPIO_NUM       36
#define Y5_GPIO_NUM       21
#define Y4_GPIO_NUM       19
#define Y3_GPIO_NUM       18
#define Y2_GPIO_NUM        5
#define VSYNC_GPIO_NUM    25
#define HREF_GPIO_NUM     23
#define PCLK_GPIO_NUM     22

The ESP32-CAM AI-Thinker comes with 10 exposed GPIOs. Learn how to use those GPIOs with this ESP32-CAM Pinout Reference Guide.

Review: ESP32-CAM with OV2640 Camera

TTGO T-Journal Pin Assignment

TTGO T-Journal ESP32-CAM Camera Pins GPIO

Pin assignment for the TTGO T-Journal board.

#define PWDN_GPIO_NUM     32
#define RESET_GPIO_NUM    -1
#define XCLK_GPIO_NUM     27
#define SIOD_GPIO_NUM     25
#define SIOC_GPIO_NUM     23
#define Y9_GPIO_NUM       19
#define Y8_GPIO_NUM       36
#define Y7_GPIO_NUM       18
#define Y6_GPIO_NUM       39
#define Y5_GPIO_NUM       5
#define Y4_GPIO_NUM       34
#define Y3_GPIO_NUM       35
#define Y2_GPIO_NUM       17
#define VSYNC_GPIO_NUM    22
#define HREF_GPIO_NUM     26
#define PCLK_GPIO_NUM     21

Review: TTGO T-Journal ESP32 Camera Development Board

M5-Camera Model A Pin Assignment

There are two similar models: M5-Camera Model A and M5-Camera Model B. The model A looks as shown in the following figure.

M5-Camera Model A Pins GPIO

Pin assignment for the M5-Camera Model A.

#define PWDN_GPIO_NUM     -1
#define RESET_GPIO_NUM    15
#define XCLK_GPIO_NUM     27
#define SIOD_GPIO_NUM     25
#define SIOC_GPIO_NUM     23
#define Y9_GPIO_NUM       19
#define Y8_GPIO_NUM       36
#define Y7_GPIO_NUM       18
#define Y6_GPIO_NUM       39
#define Y5_GPIO_NUM        5
#define Y4_GPIO_NUM       34
#define Y3_GPIO_NUM       35
#define Y2_GPIO_NUM       32
#define VSYNC_GPIO_NUM    22
#define HREF_GPIO_NUM     26
#define PCLK_GPIO_NUM     21

M5-Camera Model B Pin Assignment

The M5-Camera Model B looks as follows:

M5-Camera Model B Pins GPIO

Pin assignment for the M5-Camera Model B.

#define PWDN_GPIO_NUM     -1
#define RESET_GPIO_NUM    15
#define XCLK_GPIO_NUM     27
#define SIOD_GPIO_NUM     22
#define SIOC_GPIO_NUM     23
#define Y9_GPIO_NUM       19
#define Y8_GPIO_NUM       36
#define Y7_GPIO_NUM       18
#define Y6_GPIO_NUM       39
#define Y5_GPIO_NUM        5
#define Y4_GPIO_NUM       34
#define Y3_GPIO_NUM       35
#define Y2_GPIO_NUM       32
#define VSYNC_GPIO_NUM    25
#define HREF_GPIO_NUM     26
#define PCLK_GPIO_NUM     21

M5-Stack ESP32-Camera (without PSRAM) Pin Assignment

M5-Stack ESP32-Camera (without PSRAM) Pins GPIO

Pin assignment for the M5-stack ESP32 camera without PSRAM.

#define PWDN_GPIO_NUM     -1
#define RESET_GPIO_NUM    15
#define XCLK_GPIO_NUM     27
#define SIOD_GPIO_NUM     25
#define SIOC_GPIO_NUM     23
#define Y9_GPIO_NUM       19
#define Y8_GPIO_NUM       36
#define Y7_GPIO_NUM       18
#define Y6_GPIO_NUM       39
#define Y5_GPIO_NUM        5
#define Y4_GPIO_NUM       34
#define Y3_GPIO_NUM       35
#define Y2_GPIO_NUM       17
#define VSYNC_GPIO_NUM    22
#define HREF_GPIO_NUM     26
#define PCLK_GPIO_NUM     21

ESP-EYE Pin Assignment

ESP-EYE Pins GPIO

Pin assignment for the ESP-EYE camera.

#define PWDN_GPIO_NUM    -1
#define RESET_GPIO_NUM   -1
#define XCLK_GPIO_NUM    4
#define SIOD_GPIO_NUM    18
#define SIOC_GPIO_NUM    23
#define Y9_GPIO_NUM      36
#define Y8_GPIO_NUM      37
#define Y7_GPIO_NUM      38
#define Y6_GPIO_NUM      39
#define Y5_GPIO_NUM      35
#define Y4_GPIO_NUM      14
#define Y3_GPIO_NUM      13
#define Y2_GPIO_NUM      34
#define VSYNC_GPIO_NUM   5
#define HREF_GPIO_NUM    27
#define PCLK_GPIO_NUM    25

Review: ESP-EYE: ESP32-based board for AI

TTGO T-Camera Plus Pin Assignment

T-Camera Plus Pins GPIO

Pin assignment for the TTGO T-Camera Plus.

#define PWDN_GPIO_NUM    -1
#define RESET_GPIO_NUM   -1
#define XCLK_GPIO_NUM    4
#define SIOD_GPIO_NUM    18
#define SIOC_GPIO_NUM    23
#define Y9_GPIO_NUM      36
#define Y8_GPIO_NUM      37
#define Y7_GPIO_NUM      38
#define Y6_GPIO_NUM      39
#define Y5_GPIO_NUM      35
#define Y4_GPIO_NUM      26
#define Y3_GPIO_NUM      13
#define Y2_GPIO_NUM      34
#define VSYNC_GPIO_NUM   5
#define HREF_GPIO_NUM    27
#define PCLK_GPIO_NUM    25

Review: TTGO T-Camera Plus ESP32 Development Board

TTGO T-Camera with PIR Sensor Pin Assignment

TTGO T-Camera with PIR Sensor Pins GPIO

Pin definition for the T-Camera with PIR sensor:

#define PWDN_GPIO_NUM    -1
#define RESET_GPIO_NUM   -1
#define XCLK_GPIO_NUM    4
#define SIOD_GPIO_NUM    18
#define SIOC_GPIO_NUM    23
#define Y9_GPIO_NUM      36
#define Y8_GPIO_NUM      15
#define Y7_GPIO_NUM      12
#define Y6_GPIO_NUM      39
#define Y5_GPIO_NUM      35
#define Y4_GPIO_NUM      14
#define Y3_GPIO_NUM      13
#define Y2_GPIO_NUM      34
#define VSYNC_GPIO_NUM   5
#define HREF_GPIO_NUM    27
#define PCLK_GPIO_NUM    25

Wrapping Up

Having the right pin definition for your ESP32 camera board is very important. Otherwise, your code won’t work or your board will not initialize the camera.

We have several tutorials for the ESP32-CAM that may also be compatible with other ESP32 camera boards as long as you use the right pin definition in your code.


Learn how to program and build projects with the ESP32 and ESP8266 using MicroPython firmware DOWNLOAD »

Learn how to program and build projects with the ESP32 and ESP8266 using MicroPython firmware DOWNLOAD »


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