DHT11 digital temperature and humidity sensor is a temperature and humidity composite sensor with calibrated digital signal output. It uses special digital module acquisition technology and ...

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DHT11采用单总线通信协议，即通过一根数据线同时实现数据的发送与接收，这种设计大大简化了硬件连接，但对时序的要求极为严格，任何微小的时序偏差都可能导致通信失败。 在数据传输过程中，DHT11通过高低电平的脉冲宽度来表示二进制的“0”和“1”。