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Arduino接口与Node-RED监测网页上的温度和湿度
DHT11传感器与Arduino接口的电路图如下所示,原理图是使用Fritzing软件绘制的。 DHT11是一款流行的3针传感器,可以测量温度和湿度。该传感器采用单线协议,易于与Arduino等开发板一起使用。DHT11的Vcc引脚与Arduino的3.3v引脚连接,GND引脚与Arduino的GND引脚连接。
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