He decided to take an in-depth look at the DHT11 sensor; which you can get your hands on for under $3 if you know where to look. The four-pin device uses a 1-wire protocol.

The DHT11 sensor is crucial as it provides additional environmental data that can be useful for more comprehensive weather monitoring.

New stuff you need Second micro:bit and battery DHT11 environmental sensor LAST week it was rain. This week, our mini weather station will measure temperature and humidity.

We’ve said it before but it’s worth repeating: rolling your own hardware solution is ridiculously easy these days. If you want to make a network attached environmental sensor, you wire a DHT11 ...