DP_51PRO实验仪红外收发实验。使用串口发送数据经调制后从红外管输出，并通过红外接收模块把接收到的数据返回串口接收端，通过判断接收到的数据来控制LED灯点亮。-DP_51PRO experimental instrument experimental infrared transceiver. Using the serial port to send data via modulated infrared control from the output, and IR receiver module to the received serial data back to the receiver, by judging the received data to control the LED lights light up.