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...
// 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部分的程序会不断...
//the setup function runs once when you press reset or power the board // setup()函数只运行一次,用来启动Arduino控制器,将运行中不改变的数值和属性固化到芯片中voidsetup() {//initialize digital pin LED_BUILTIN as an output. // pinMode(pin,mode):将指定的引脚配置为输入或输出 // - pin:所...
without using the delay() function. This means that other code can run at thesame time without being interrupted by the LED code.The circuit:- Use the onboard LED.- Note: Most Arduinos have an on-board LED you can control. On the UNO, MEGAand ZERO it is attached to digital...
This segment is the viewer’s first introduction to using an LED with Arduino. Step-by-step instructions are included for building a simple circuit with an LED, opening up code in the Arduino IDE and using the serial monitor to view realtime data from the Arduino. ...
Arduino学习笔记---Blink without delay 上一篇里的 delay 非常拉,delay 的时候什么都不能做 这里把它规避掉 1/*2Blink without Delay34Turns on and off a light emitting diode (LED) connected to a digital pin,5without using the delay() function. This means that other code can run at the6same...
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LED_BUILTIN：是一个宏，全称：LED-BUILT-IN，内嵌LED的意思，在Arduino的核心库文件“pins_arduino.h”中已经定义，它代表13，一般为了板子兼容写法就这么写，如果写2或者其他引脚数值可能程序代码的移植性没那么好，所以推荐：LED_BUILTINpins_arduino.sh 位置：Arduino_Setup_Home\hardware\arduino\avr...
Arduino DUE 开发板 Yún shield (可选, 随后通过WiFi遥控上传) 电路 这个程序必须用USB上传,然后下一次上传可以用Yún Shield 和 WiFi。 图为Fritzing 软件绘制 样例代码 完整程序如下: /* Blink Turns on an LED on for one second, then off for one second, repeatedly. ...
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