“This board plus a Pi Zero W makes an inexpensive platform for my home automation alarms and controls. I'm using one of these to implement a web-connected garage door opener and monitor.”
“Very nice hat that allows for easy installation with a RPi in a RV.
I use it in a RV for continuous 24/7 monitoring of battery and solar recharging status (Volt) + status of some devices like fans, water level via digital IO.
Fairly easy to attach a series of DS18b20 to get indoor and outdoor temperature.”