您将在代码的主循环中使用的analogWrite()函数需要两个参数:一,告诉函数写入哪个引脚,另一个指示要写入的PWM值。 为了关闭和打开LED,逐渐将PWM值从0(一直关闭)增加到255(一直开启),然后再回到0,以完成循环。 在上面给出的草图中,使用称为亮度的变量设置PWM值。 每次循环时,它都会增加变量fadeAmount的值。 如果...
/*FadeThis example shows how to fade an LED on pin 9 using the analogWrite()function.The analogWrite() function uses PWM, so if you want to change the pin you'reusing, be sure to use another PWM capable pin. On most Arduino, the PWM pinsare identified with a "~" sign, like ~3, ...
intLED1 =3;intLED2 =5;intLED3 =9;intLED4 =10;intLED5 =11;intfadeValue1 =0;//定义亮度intfadeValue2 =60;intfadeValue3 =120;intfadeValue4 =180;intfadeValue5 =240;intstate1 =0;intstate2 =0;intstate3 =0;intstate4 =0;intstate5 =0;voidsetup(){ }voidloop(){//更新//1if(...
This example code is in the public domain. http://www.arduino.cc/en/Tutorial/Fade */intled=9;// the PWM pin the LED is attached tointbrightness=0;// how bright the LED isintfadeAmount=5;// how many points to fade the LED by// the setup routine runs once when you press reset:...
This example code is in the public domain. https://www.arduino.cc/en/Tutorial/BuiltInExamples/Fade */ // int led = 9; // the PWM pin the LED is attached to int brightness = 0; // how bright the LED is int fadeAmount = 5; // how many points to fade the LED by ...
Step 2: Programming. Program the Arduino with the code below. It will give you a slow fade from each LED. //feel free to make changes //do not connect led's in sequential order //make sure all led's are connected to a resistor if applicable ...
This example code is in the public domain. 闪烁 点亮LED 一秒,然后熄灭一秒,不断循环 几乎所有 Arduino 的开发板都有板上的 LED 灯可以供控制。在 UNO, MEGA, 和 ZERO 它 是连到 D13 引脚,而 MKR1000 是连在 6 引脚。LED_BUILTIN 的值是已经设置到对应开发 ...
要控制每个RGB LED，您需要微控制器的三个数字引脚。例如，如果要控制包含60个LED的RGB LED灯串，为了...
2.LED模块 你的LED模块可能是这样子 也可能是这样子 不管长什么样,只要单色可调光LED,都是三根线。 标注字符IN的是控制线、VCC是电源线、GND是地线。 3.连接模块 Mega开发板,2-13都是pwm接口,随便选一个都可以。 Uno开发板,3,5,6,9,10,11是pwm接口,可以在开发板上看到接口数字边上有个~。
Have an awesome project in mind using some LEDs. In that project I will be using some LED Fading Effect and few LED Chaser Circuits. But before jumping onto that, I thought I should create a short tutorial and show you guys how to fade a LED with or without an Arduino automatically or...