The experiment is for switching an acoustic sounder as a rain alarm after a predetermine time. It may, however, be tinkered for a number of other applications. Needless to say, this is a simple ...

For temperature and humidity, a DHT22 sensor is located in a 3D printed Stevensen screen, giving the sensor steady airflow while protecting the module from direct sunlight and rain.

Valeo has announced a contract for a compact Rain Light Tunnel (RLT) sensor system that will contribute to safety for all road users on rainy days, at twilight and going through tunnels.