The DHT11 (or DHT22 and similar) are cheap temperature and humidity sensors. The communicate with a uC is over a single wire, but unfortunately it is not compatible with the 1-Wire protocol defined by Dallas Semiconductors. The electric connection to the ESP32 is very simple, as the DHT series can be powered direct with 3.3V. Only 3 wires are needed: VCC, GND and the data line. Important is that a 10kΩ or at least 4.7kΩ resistor is needed between the

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