Thanks to a WH-SP-RG rain gauge, there’s not much to that part. The smart part is an nRF52832 module and some minor parts. The phone side uses an off-the-shelf Android app. In a project like ...

[Malte Pöggel] thinks so, and this LoRa rain gauge is ... and temperature sensor, either by adding the BMP280 chip directly to the board or by adding a cheap I2C module, for those who don ...

It used a simple system wherein a tiny module mounted behind ... If there was rain on the windshield, less light would be bounced back and the sensor would know something was up.

Off-road environment recognition technologies for detecting extraneous substances such as dust, mud, snow, or rain during ... the "sensor protection and cleaning module" technologies can be ...