Description
The DHT-11 is a reliable, low-cost digital sensor designed to measure both ambient temperature and relative humidity. It utilises a capacitive humidity sensor and a thermistor to analyse the surrounding air, transmitting a calibrated digital signal directly through its single data pin. This built-in signal conversion makes it incredibly straightforward to wire, eliminating the need for analog inputs. While it features a relatively slow polling rate and basic accuracy compared to industrial sensors, it is a cornerstone of educational STEM curricula due to its affordability and ease of integration. Seamlessly connecting to microcontrollers like the Arduino UNO and Magic Board, it offers an excellent practical introduction to reading digital data streams and utilising external code libraries. It is the perfect starting point for students building smart indoor weather stations, automated climate control systems, and interactive greenhouse monitors.
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