I began replacing the devices around my home, one by one, with all different kinds of open hardware, rather than the ...

This module allows you to measure environmental parameters of temperature and humidity using the DHT11 sensor. Additionally, based on the sensor readings LEDs will turn on to display temperature scale ...

Temperature and humidity measurements are a nice addition to many hobby projects. But [Rajendra Bhatt] makes the point that many of these sensors have a price tag that is well above what most ...