Monitoring an appliance with a microcontroller usually follows a well-worn path of diving inside and finding somewhere in the electrical circuitry that can be connected through some kind of interface ...

The Seeeduino Xiao is a stamp-sized, Arduino-like microcontroller board based on the SAMD21G18 chip (ARM Cortex-M0+,32bit,48MHz). It is like the Arduino MKR ZERO. It features a rich host of interfaces ...