环境准备

安装arduino：https://www.arduino.cc/en/software 默认不支持Wemos，要去安装Wemos支持，进入设置，附加开发板URL：Additional Board Manager URLs: https://arduino.esp8266.com/stable/package_esp8266com_index.json

下载安装相关支持：开发板管理中搜索esp8266安装

设置当前Wemos开发板和串口

代码：

void setup() {
  // put your setup code here, to run once:
  pinMode(D5,OUTPUT);  //设置引脚为输出引脚

}

void loop() {
  
  digitalWrite(D5,LOW);
  delay(1000);  //毫秒
  digitalWrite(D5,HIGH);
  delay(1000);  //间隔蜂鸣
  // put your main code here, to run repeatedly:

}

烧录