DHT11 basic temperature-humidity sensor + extras
DHT11 basic temperature-humidity sensor + extras
The DHT11 is a basic, ultra low-cost digital temperature and humidity sensor. It uses a capacitive humidity sensor and a thermistor to measure the surrounding air, and spits out a digital signal on the data pin (no analog input pins needed). Its fairly simple to use, but requires careful timing to grab data. The only real downside of this sensor is you can only get new data from it once every 2 seconds, so when using our library, sensor readings can be up to 2 seconds old. Compared to the DHT22, this sensor is less precise, less accurate and works in a smaller range of temperature/humidity, but its smaller and less expensive We have a Adafruit Learning System guide with schematics, Arduino & CircuitPython code, datasheets and more! Comes with a 4.7K or 10K resistor, which you will want to
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Overview, DHT11, DHT22 and AM2302 Sensors
