1-Wire and GPIO 38 :: ESP32 S3R8 :: Nano board

[D3jcku63]

Hello,

I'm using ESP32 Nano board which has Nina-W106 module with ESP32-S3R8 core inside.
I have big troubles with establishing 1-Wire communication on the GPIO 38. It works fine on GPIO 10 and most of the time on GPIO 21, but never on GPIO 38.
I ran a basic blink script on GPIO 38 and it works perfect. Additionally, I also tested how this pin works as input and it works as it should. In the documentation I can't find a reason why 1-Wire on GPIO 38 wouldn't work at all.

Many thanks.

[estudiosma]

Hi,

I had the same problem using a ESP32-S3. The DS18B20 sensor was not working on GPIO38. I tested other pins and they worked fine. I used the https://github.com/pstolarz/OneWireNg library and that solved the issue.