I2C Pins on ESP32-PICO-KIT V4.1

[Serena Yeoh]

Hi,

I apologized if this is a dumb question, I am new to ESP32 and not from EE background. I would like to know where are the I2C pins on the ESP32-PICO-KIT. I cannot find much information on this board and I can't see any labels for the SDA and SCL pins in the documentation on the espressif site. I have tried pins 21 and 22 which are the usual pins for ESP32-WROOM-32 Dev Kits but they don't work for the ESP32-PICO-KIT.

I would very much appreciate your help.

Thank You.

[WiFive]

You can route i2c pins to almost any gpio, that's why there is i2c_set_pin function

https://docs.espressif.com/projects/esp ... i2c_mode_t

[mikemoy]

I am not sure what to say here because moving my I2C project from my ESP32-WROOM-32 Dev Kit worked just fine on the Pico Kit using the same pins. Do you have a ESP32-WROOM-32 Dev Kit, that you tried the I2C on first ?

[dhanishvijayan]

The default I2C pins if you choose pico32 as the board in the platformio is
IO22 - SCL
IO21 - SDA