【Arduino 按钮随机LED实验】

最新推荐文章于 2025-12-20 09:31:41 发布

原创最新推荐文章于 2025-12-20 09:31:41 发布 · 315 阅读

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#单片机

一、必须组件

– Arduino Uno控制器
– 5个LED
– 5个220 欧姆电阻
– 1个10k欧姆电阻
– 连接线
– 面包版
– 1个按钮

二、硬件连接

1.连线图
请添加图片描述
2.实际连接图
注意

三、程序

用Arduino IDE导入该程序

const int redLed = 2;
const int yellowLed = 3;
const int whiteLed = 4;
const int blueLed = 5;
const int greenLed = 6;
const int askButton = 12;

int askButtonState = 0;
int awnser = 0;

void setup() {
  pinMode(redLed, OUTPUT);
  pinMode(yellowLed, OUTPUT);
  pinMode(whiteLed, OUTPUT);
  pinMode(blueLed, OUTPUT);
  pinMode(greenLed, OUTPUT);
  pinMode(askButton, INPUT);
}

void loop() {
  askButtonState = digitalRead(askButton);
  if (askButtonState == HIGH) {
    digitalWrite(redLed, LOW);
    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;
      
      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;
    }
  }
}

四、最终演示效果

五、实验中的差错

我未将面包板中间不通电的两部分相连，导致LED部分不能造成一个回路，最终LED不亮。