警灯，警铃四合一【Arduino玩具】

功能：
1.只有警灯工作。警铃不工作。
2.警灯警铃同时工作。
3.喇叭(由最右侧的按钮开关控制)。
4.第二种警铃(由第二个按钮开关控制)。
*第2，3，4模式中警灯的点亮方式也不同。

[演示视频+拼装]

警铃，警灯四合一【Arduino玩具】

Bill of Material:
Arduino Uno x1; 蜂鸣器 x1; 按钮开关 x2; LEDs x 6（红,蓝,白,至少各两个); 电阻(220 x1, 100 x6, 10K x2); 面包板还有面包板线。

接线图：

Arduino IDE 代码：

/** Project: Toy Police Siren 项目：玩具警灯+警铃四合一* * Last Edited: Jan.11th.2021 by Mun Kim 神勇老金
*/int freq, dur; //Define buzzer tone frequency and duration of each tone. 喇叭的频率与时长
const int buzzer = 12;// Buzzer on pin D12 喇叭接到D12void setup() {pinMode(buzzer, OUTPUT); pinMode(5,OUTPUT); //Blue LED 蓝灯pinMode(6,OUTPUT); //Blue LEDpinMode(7,OUTPUT); //White LED 白灯pinMode(8,OUTPUT); //White LEDpinMode(9,OUTPUT); //Red LED 红灯pinMode(10,OUTPUT);//Red LED
}void loop() {//Rising Pitch**************************************************************************************************************警铃的前半段for(freq=635;freq<=912;freq++){tone(buzzer,freq);delay(dur);// LED Control 警灯的控制。if(freq<670){  //Top 2 Red LEDs light up. 点亮最上方的两个红色LEDdigitalWrite(10,HIGH); digitalWrite(9, HIGH); digitalWrite(8, LOW); digitalWrite(7, LOW); digitalWrite(6, LOW); digitalWrite(5, LOW);} if( (freq>=670)&&(freq<700)){ //Red to White transition 点亮第二个红色LED和第一个白色LEDdigitalWrite(10, LOW); digitalWrite(9, HIGH); digitalWrite(8, HIGH);digitalWrite(7, LOW); digitalWrite(6, LOW); digitalWrite(5, LOW);}if( (freq>=700)&&(freq<730)){ //Middle 2 White LEDs light up. 中间两个白色LEDdigitalWrite(10,LOW);  digitalWrite(9, LOW);  digitalWrite(8, HIGH);digitalWrite(7, HIGH);digitalWrite(6, LOW); digitalWrite(5, LOW);}if( (freq>=730)&&(freq<760)){ //White to Blue transition. 以此类推digitalWrite(10,LOW);  digitalWrite(9, LOW);  digitalWrite(8, LOW); digitalWrite(7, HIGH);digitalWrite(6, HIGH); digitalWrite(5, LOW);}if( (freq>=760)&&(freq<790)){  //Bottom 2 Blue LEDs light up.digitalWrite(10,LOW);  digitalWrite(9, LOW);  digitalWrite(8, LOW); digitalWrite(7, LOW); digitalWrite(6, HIGH); digitalWrite(5, HIGH);}if( (freq>=790)&&(freq<820)){  // Backwards...反过来再来一遍digitalWrite(10,LOW);  digitalWrite(9, LOW);  digitalWrite(8, LOW); digitalWrite(7, HIGH);digitalWrite(6, HIGH); digitalWrite(5, LOW);}if( (freq>=820)&&(freq<850)){digitalWrite(10,LOW);  digitalWrite(9, LOW);  digitalWrite(8, HIGH);digitalWrite(7, HIGH);digitalWrite(6, LOW);  digitalWrite(5, LOW);}if( (freq>=850)&&(freq<880)){digitalWrite(10,LOW);  digitalWrite(9, HIGH); digitalWrite(8, HIGH);digitalWrite(7, LOW); digitalWrite(6, LOW);  digitalWrite(5, LOW);}if( freq>=880){digitalWrite(10,HIGH); digitalWrite(9, HIGH); digitalWrite(8, LOW); digitalWrite(7, LOW); digitalWrite(6, LOW);  digitalWrite(5, LOW);}// Push Button Control，汽车喇叭功能。if (digitalRead(2)==HIGH){freq=912;digitalWrite(10,HIGH); digitalWrite(9, LOW);digitalWrite(8, HIGH);digitalWrite(7, HIGH);digitalWrite(6, LOW);digitalWrite(5, HIGH);}// “说你呢” 功能。if(digitalRead(3)==HIGH) dur=0;else dur=7;}    //Falling Pitch******************************************************************************************************************警铃后半段for(freq=911;freq>=634;freq--){tone(buzzer, freq);delay(dur);// LED Controlif(freq<670){  //Top 2 Red LEDs light up.digitalWrite(10,HIGH); digitalWrite(9, HIGH); digitalWrite(8, LOW); digitalWrite(7, LOW); digitalWrite(6, LOW); digitalWrite(5, LOW);} if( (freq>=670)&&(freq<700)){ //Red to White transitiondigitalWrite(10, LOW); digitalWrite(9, HIGH); digitalWrite(8, HIGH);digitalWrite(7, LOW); digitalWrite(6, LOW); digitalWrite(5, LOW);}if( (freq>=700)&&(freq<730)){ //Middle 2 White LEDs light up.digitalWrite(10,LOW);  digitalWrite(9, LOW);  digitalWrite(8, HIGH);digitalWrite(7, HIGH);digitalWrite(6, LOW); digitalWrite(5, LOW);}if( (freq>=730)&&(freq<760)){ //White to Blue transition.digitalWrite(10,LOW);  digitalWrite(9, LOW);  digitalWrite(8, LOW); digitalWrite(7, HIGH);digitalWrite(6, HIGH); digitalWrite(5, LOW);}if( (freq>=760)&&(freq<790)){  //Bottom 2 Blue LEDs light up.digitalWrite(10,LOW);  digitalWrite(9, LOW);  digitalWrite(8, LOW); digitalWrite(7, LOW); digitalWrite(6, HIGH); digitalWrite(5, HIGH);}if( (freq>=790)&&(freq<820)){  // Backwards...digitalWrite(10,LOW);  digitalWrite(9, LOW);  digitalWrite(8, LOW); digitalWrite(7, HIGH);digitalWrite(6, HIGH); digitalWrite(5, LOW);}if( (freq>=820)&&(freq<850)){digitalWrite(10,LOW);  digitalWrite(9, LOW);  digitalWrite(8, HIGH);digitalWrite(7, HIGH);digitalWrite(6, LOW);  digitalWrite(5, LOW);}if( (freq>=850)&&(freq<880)){digitalWrite(10,LOW);  digitalWrite(9, HIGH); digitalWrite(8, HIGH);digitalWrite(7, LOW); digitalWrite(6, LOW);  digitalWrite(5, LOW);}if( freq>=880){digitalWrite(10,HIGH); digitalWrite(9, HIGH); digitalWrite(8, LOW); digitalWrite(7, LOW); digitalWrite(6, LOW);  digitalWrite(5, LOW);}if(digitalRead(2)==HIGH){freq=634;digitalWrite(10,HIGH); digitalWrite(9, LOW);digitalWrite(8, HIGH);digitalWrite(7, HIGH);digitalWrite(6, LOW);digitalWrite(5, HIGH);}if (digitalRead(3)==HIGH)dur=0;else dur=7;}}

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警灯，警铃四合一【Arduino玩具】

警灯，警铃四合一【Arduino玩具】

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