Using blech to measure temperature/humidity via a DHT11-sensor.

As always .. (see e.g. https://github.com/mschlund/RGB_LED)

$ git clone git@github.com:mschlund/DHT11.git
$ cd DHT11
$ make

and then build and flash the Ultrasonic_Sensor.ino with your favorite Arduino-IDE.

See the corresponding blog-post for this mini-project: https://maximilianschlund.wordpress.com/2020/12/05/lesson-6-measuring-temperature-and-humidity-using-the-dht11/