LED灯:大多数Arduino板(如Arduino Uno)在数字引脚13上已经内置了一个LED灯,因此无需额外连接硬件。 如果需要连接外部LED灯,可以将LED的长脚(正极)连接到数字引脚13,短脚(负极)通过一个限流电阻(如220Ω)连接到GND。 运行结果 当代码上传到Arduino板并运行后,连接在数字引脚13上的LED灯会以每秒闪烁一次的频率不...
Turns on an LED on for one second, then off for one second, repeatedly. This example code is in the public domain. */ 复制代码 这是代码中的说明文字,可以叫做注释。用"/*…*/",这个符号之间的内容将不被编译器编译。注释在代码中是非常有用的,它可以帮助你理解代码。IDE也将自动把注释的文字颜色...
the correct LED pin independent of which board is used. If you want to know what pin the on-board LED is connected to on your Arduino model, check the Technical Specs of your board at https://www.arduino.cc/en/Main/Products This example code is in the public domain. 闪烁 点亮LED 一...
After you build the circuit plug your Arduino board into your computer, start the Arduino Software (IDE) and enter the code below. You may also load it from the menu File/Examples/01.Basics/Blink . The first thing you do is to initialize LED_BUILTIN pin as an output pin with the line...
here is where you'd put code that needs to be running all the time. // check to see if it's time to blink the LED; that is, if the difference // between the current time and last time you blinked the LED is bigger than // the interval at which you want to blink the LED. ...
这就是Blink的代码: /*BlinkTurns on an LED on for one second, then off for one second, repeatedly. This example code is in the public domain.*/ // Pin 13 has an LED connected on most Arduino boards.// give it a name:intled =13; ...
This example code is in the public domain. http://www.arduino.cc/en/Tutorial/BlinkWithoutDelay */ // constants won't change. Used here to set a pin number : const int ledPin = 13; // the number of the LED pin // Variables will change : ...
This example code is in the public domain. http://www.arduino.cc/en/Tutorial/Blink */ // the setup function runs once when you press reset or power the board void setup() { // initialize digital pin LED_BUILTIN as an output.
Blink*/// 在大多数Arduino控制板上 13号引脚都连接了一个标有“L”的LED灯// 我们给13号引脚设置一个别名“led”int led = 13;//在板子启动或者复位重启后, setup部分的程序只会运行一次void setup(){ // 将“led”引脚设置为输出状态 pinMode(led, OUTPUT);}//setup部分程序运行完后,loop部分的程序...
This example code is in the public domain. https://www.arduino.cc/en/Tutorial/BuiltInExamples/BlinkWithoutDelay */ // constants won't change. Used here to set a pin number: const int ledPin = LED_BUILTIN;// the number of the LED pin ...