Energy harvest from Current Transformer and store in a Supercapacitor. Simulation and PCB. See https://www.ti.com/lit/ug/tidud59/tidud59.pdf

This is a simple charger modul that can be connected to a DC generator or solar panel at the input and a battery at the output

A board with a lora module (which can be programmed) and the ability to work autonomously from a battery and a solar panel #mppt #solar #lora #stm