Imported from GitHub: Qeteshpony/MainsFrequencyMonitor · commit 506f52b · license BSD-2-Clause

Description

Single board solution to power an ESP32 and use it to measure the mains frequency through an optoisolator

README

Mains Frequency Monitor

Part of the board has mains voltage on it so it is dangerous to handle the board outside of a proper case while powered! It lies in your own responsibility to use proper safety precautions when working on this project!

Hardware Documentation

Single board solution to power an ESP32 and use it to measure the mains frequency through an optoisolator