How to add LoRaWAN comms to a rain guage, featuring a Microchip ATmega328P processor and a Littelfuse TMR (tunnel magnetoresistance) ...

It isn’t that hard to make an electronic rain gauge if you have a steady source of power or you don’t mind changing batteries often. But [Matthew Ford] offers a third option: a simple device ...

[Malte Pöggel] thinks so, and this LoRa rain gauge is the result ... [Malte] put a lot of work into power optimization, and it shows. A pair of AA batteries should last at least three years ...

The current forecast for the next week doesn’t look good for putting much in the rain gauge before the month is over. As of Friday afternoon, the official rain gauge at Seattle-Tacoma ...