Datasheet

LED
ESP32Cam
LED_Pin IO16
reserved chip interfaces
BME280 Interface
I2C address 0x76.
BME280 ESP32Cam
SCL IO4
SDA IO13
MPU6050 Interface
MPU6050 ESP32Cam
SCL IO4
SDA IO13
MIC(SPQ2410) Interface
SPQ2410 ESP32Cam
OUT IO32
NOTE:
1
. Camera Power Down pin does not need to be connected to ESP32 GPIO. Instead it may be pulled
down to ground with 10 kOhm resistor.
2
. We have several patterns of camera board, the following figures shows the main differece
Related Link
Offical Video
Forum
Datasheet - ESP32 - OV2640
M5Stack Docs
I2C address is 0x68.