hvac节点环境参数测试，采用DS18B20，湿度模块，测量温湿度，并控制光照度，风扇。数码管显示

DHT11温湿度测量数码管显示，测试成功通过，只要程序没有电路。-DHT11 digital display temperature and humidity measurements, the test successfully, as long as the program does not have circuits.

一个数显小表 接温湿度及压力传感器 实现测试各种数据的功能(A digital display small table connected with temperature, humidity and pressure sensors to test the functions of all kinds of data)