Arduino 按钮随机LED保姆级教学（2/2）-优快云博客

const int redLed = 2;//引脚2链接红色灯
const int yellowLed = 3;//引脚3链接黄色灯
const int whiteLed = 4;//引脚4链接白色灯
const int blueLed = 5;//引脚5链接蓝色灯
const int greenLed = 6;//引脚6链接绿色灯
const int askButton = 12;//引脚12
// initialize Variables
int askButtonState = 0;
int awnser = 0;
void setup() {
// put your setup code here, to run once:
pinMode(redLed, OUTPUT);
pinMode(yellowLed, OUTPUT);
pinMode(whiteLed, OUTPUT);
pinMode(blueLed, OUTPUT);
pinMode(greenLed, OUTPUT);
pinMode(askButton, INPUT);} 
void loop() {
// put your main code here, to run repeatedly:
askButtonState = digitalRead(askButton);
if (askButtonState == HIGH) {
digitalWrite(redLed, LOW); // clear Leds to show new awnser
digitalWrite(yellowLed, LOW);
digitalWrite(whiteLed, LOW);
digitalWrite(blueLed, LOW);
digitalWrite(greenLed, LOW);
delay(100);
awnser = random(5);
switch (awnser) {
case 0: // no
digitalWrite(greenLed, LOW);
digitalWrite(yellowLed, LOW);
digitalWrite(whiteLed, LOW);
digitalWrite(blueLed, LOW);
digitalWrite(redLed, HIGH);
delay(1000);
break;
case 1: // rather not
digitalWrite(redLed, LOW);
digitalWrite(whiteLed, LOW);
digitalWrite(blueLed, LOW);
digitalWrite(greenLed, LOW);
digitalWrite(yellowLed, HIGH);
delay(1000);
break;
askButtonState = digitalRead(askButton);
case 2: // maybe
digitalWrite(redLed, LOW);
digitalWrite(yellowLed, LOW);
digitalWrite(blueLed, LOW);
digitalWrite(greenLed, LOW);
digitalWrite(whiteLed, HIGH);
delay(1000);
break;
case 3: // rather yes
digitalWrite(redLed, LOW);
digitalWrite(whiteLed, LOW);
digitalWrite(yellowLed, LOW);
digitalWrite(greenLed, LOW);
digitalWrite(blueLed, HIGH);
delay(1000);
break;
case 4: // yes
digitalWrite(redLed, LOW);
digitalWrite(whiteLed, LOW);
digitalWrite(blueLed, LOW);
digitalWrite(yellowLed, LOW);
digitalWrite(greenLed, HIGH);
delay(1000);
break;
}
}
}

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验证成功后就上传（勾旁边的箭头就是上传）

6.欣赏成果

Arduino 按钮随机LED成果

7.心得

我认为这是个新的开始我也遇到了很多问题（见下面），但是当我成功做出来了后感到非常自豪，所以我认为在这个时代人类要不断走出自己的舒适圈，才能前进，我还会更新的，最后点一下赞，一起加油吧，，我是FOX，励志做一个博学的萌新

8.花絮

这是我最喜欢的部分，这一部分是我在做的时候遇到的问题

问题一：

我想把灯变两个两个亮，于是我将代码改成了

digitalWrite(redLed, LOW);
digitalWrite(whiteLed, LOW);
digitalWrite(blueLed, LOW);
digitalWrite(yellowLed, HIGH);
digitalWrite(greenLed, HIGH);

将LOW改成HIGH这样就是高电平，也是变亮

问题二：

awnser = random(5);指在符合条件时随机出现一个数（在5里面）

这个一开始我看不懂，于是在百度的帮助下

我发现random函数就是随机生成，详细可以看下面网站

Python如何生成5个随机数 – PingCode

问题三：

如果按按钮却没有亮，可能是因为没随机到，比较全随机

Arduino 按钮随机LED保姆级教学（2/2）

1.安装对应软件

2.学习软件的使用

3.知识准备

4.准备道具

然后我们连接面包板和UNO板子

5.代码

接下验证 ，左上角的勾是验证符号