void loop() { digitalWrite(13, HIGH); // turn the LED on (HIGH is the voltage level) delay(2000); // wait for a second digitalWrite(13, LOW); // turn the LED off by making the voltage LOW delay(1000); // wait for a second } 5、IDE设置 (串口选择、开发板型号选择、编译器选择...
digitalWrite(led, HIGH); // turn the LED on (HIGH is the voltage level) delay(1000); // wait for a second digitalWrite(led, LOW); // turn the LED off by making the voltage LOW delay(1000); // wait for a second } 在循环功能中,命令首先将LED引脚开启(HIGH),然后'延迟'1000毫秒(1秒...
// The setup function that runs one time at startupvoidsetup() {pinMode(13, OUTPUT);// Initialize digital pin 13 as an output.}// The main loop that continues forevervoidloop() {digitalWrite(13, HIGH);// turn the LED on (HIGH is the voltage level)delay(1000);// wait for a seco...
void loop() { digitalWrite(led, HIGH); // turn the LED on (HIGH is the voltage level) delay(1000); // wait for a second digitalWrite(led, LOW); // turn the LED off by making the voltage LOW delay(1000); // wait for a second } 在循环函数中,命令首先打开LED引脚(高),然后“延迟...
如果值为“所有 LED 打开”,则两个 LED 都打开,像这样,我们已经编码了其他语音命令来打开或关闭单个 LED。查看本文后面的完整工作和演示视频。 if (bluetooth.available()) { value = bluetooth.readString(); if (value == "all LED turn on"){ ...
digitalWrite(13, HIGH); // turn the LED on (HIGH is the voltage level) delay(1000); // wait for a second digitalWrite(13, LOW); // turn the LED off by making the voltage LOW delay(1000); // wait for a second } 1. 2. ...
首先接一个简单的电路,从13号引脚接一个LED灯和电阻,电阻的作用起保护作用,避免电流过载烧坏LED灯。 代码部分 1voidsetup() {2Serial.begin(9600);//初始化串口通信功能3pinMode(13,OUTPUT);//设置13号端口为输出4}56voidloop() {7if(Serial.available()>0)//如果串口字节数大于08{9charch = Serial.rea...
当用户单击 TURN ON LED 超链接时，他/她将被重定向到 URL \?LEDON，这将点亮LED。client.println(...
digitalWrite(13, HIGH); // turn the LED on (HIGH is the voltage level) delay(1000); // wait for a second digitalWrite(13, LOW); // turn the LED off by making the voltage LOW delay(1000); // wait for a second } 主函数里面就直接使用digitalWrite(pin,mode)函数来给IO口13定义输出...
OnTime)) { ledState = LOW; // Turn it off previousMillis = currentMillis; // Remember the time digitalWrite(ledPin, ledState); // Update the actual LED } else if ((ledState == LOW) && (currentMillis - previousMillis >= OffTime)) { ledState = HIGH; // turn it on previous...