Sharing fork: SHA256 optimizations + I2C master/slave — ESP32-WROOM reconnects every ~30 min

[Luiz-Pita]

Hi everyone,

I just finished a fork of NerdMiner with:

• Improved SHA256 performance
• I2C master/slave protocol for multiple ESP32 miners

Mining works fine, but on ESP32-WROOM I’m seeing pool reconnects about every 30 minutes.

This started after adding the SHA256 optimizations + I2C coordination.

Opening this issue to share the work and ask if anyone has seen similar behavior or has ideas (heap, watchdog, socket timeout, FreeRTOS tasks, etc).

Thanks!

https://github.com/Luiz-Pita/NerdMiner_v2-melhorias-sha256-i2c-mode