[EN] We are done – two private particulate matter sensors are already running in the village, which transmit their measured values via TTN. The basis is a TTGO Lora board with pax counter and display, in addition to the SDS011 there is also a BME280 connected to measure the air humidity, pressure and temperature. We […]
![Titelbild Lora-PM-sensor with paxcounter](https://www.ttn-rhein-sieg.de/wp-content/uploads/2020/08/87ba5928f85c4a91bff37569b7900af8.large_.jpg)