void setup() { pinMode(buzzer,OUTPUT); len=sizeof(scale)/sizeof(scale[0]); } void loop() { for(int i=0;i<len;i++){ tone(buzzer,scale[i]); delay(250*duration[i]); noTone(buzzer); delay(100); } delay(1000); } 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13....
intbuzzer =8;//buzzer break, can not make noisevoidsetup() {//put your setup code here, to run once:pinMode(buzzer, OUTPUT); }voidloop() {//put your main code here, to run repeatedly:longfrequency =300; tone(buzzer, frequency); delay(100); noTone(buzzer); delay(2000);//while(...
代码: int buzzer=8; void setup() { // put your setup code here, to run once: pinMode(buzzer,OUTPUT); } void loop(http://www.my516.com) { // put your main code here, to run repeatedly: unsigned char i,j; while(1) { for(i=0;i<80;i++) { digitalWrite(buzzer,HIGH); dela...
code here, to once: //管脚初始化 pinMode(realy, OUTPUT; digitalWriterealy, HIGH); pinModebuzzer, OUTPUT); digitalWritebuzzer, HIGH); SPIbegin(); // 初始化SPI总线 rfidPCD_Init(); // 初始化 MFRC522 //LCD1602 lcd.init(); //初...
A buzzer is nothing but an electronic device that is used to play tones In our example we are plugging the buzzer on the pin number 9, that supports the functionality of writing a PWM signal to it, and not just a plain HIGH or LOW value.The first example of the code will just send ...
(SSD1306_SWITCHCAPVCC, 0x3C); // initialize with the I2C addr 0x3C (for the 128x32) delay(200); /*Make a small buzzer beep*/ analogWrite(buzzer,200); delay(100); analogWrite(buzzer,LOW); display.clearDisplay(); while(logo_slide >= 0) //Here we slide the ELECTRONOOBS logo from ...
int buzzer=8; void setup() { // put your setup code here, to run once: pinMode(buzzer,OUTPUT); } void loop(http://www.my516.com) { // put your main code here, to run repeatedly: unsigned char i,j; while(1) { for(i=0;i<80;i++) ...
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code 使用tone() intpinBuzzer=9;//管脚D9连接到蜂鸣器模块的信号脚 voidsetup() { pinMode(pinBuzzer,OUTPUT);//设置pinBuzzer脚为输出状态 } voidloop() { alarm(); } /* the universal alarm function(note the Buzzer_pin set) */ voidalarm() ...
int buzzer_pin = 10;int smoke_sensor_pin = A0;复制代码 在setup()函数中，首先，我们设置串行...