WiFi AC220 detector

Boxes for the griddetector project.

griddetector is a telegram bot written in micropython.
Verified on Raspberry Pi Pico W and ESP32-S3, but also should work on any board supported by micropython.

Monitors the state of the external Grid line using a GPIO pin connected to the dry contact of the relay powered by a direct Grid line.

Sends notifications to telegram chat about Grid state changes and some statistics.

It is applicable mainly in Ukraine with planned grid outages; however, it can be used in any location; you need to modify the code to exclude unnecessary functionality.

These cases are created specifically for two types of controllers:
- Raspberry Pi PICO W https://www.raspberrypi.com/products/raspberry-pi-pico/
- Waveshare ESP32-S3-ZERO https://www.waveshare.com/esp32-S3-zero.htm

As a relay, I use a 1-bit optocoupler you can easily find on Aliexpress for around 1$.

Fusion 360 source files are included.

Source code can be found here:
https://github.co