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(...
4.1 CodetosoundBuzzer 如果按下测试按钮,下面的代码片段会在 TEST_TIME_DURATION 内发出蜂鸣声。测试按钮连接到引脚 SMOKE_ALARM_TEST_BUTTON(参见代码)。 按下测试按钮的串行监视器输出: 。 4.2 可以通过将 Arduino 连接到例如添加代码来监控其他事件: 冷冻室温度 例如冷冻室温度过高 油箱液位,例如,如果低于某个液...
int buzzer = 8; // Assign buzzer to pin 8 int note = 1000; // Set the pitch for the buzzer tone int timeUnit = 100; // This variable will be used to measure dots, dashes, breaks, and pauses char input; // Variable to save the input to void setup () { Serial.begin(9600);/...
const int sensorPin = 2;const int buzzerpin=10;void setup() { // put your setup code here, to run once:pinMode(redLed, OUTPUT);pinMode(yellowLed,OUTPUT);pinMode(buzzerpin,OUTPUT);attachInterrupt(0,testProgram,CHANGE);} void loop() { // put your main code here, to run repeatedly:...
Arduino UNO 液晶屏 16*2 4*4矩阵键盘 蜂鸣器 按钮 电位器 (10k) 电阻器(10k,100欧姆) 连接线 Arduino倒数计时器电路图 Arduino Uno在这里用作主控制器。键盘用于馈送持续时间,16*2 LCD用于显示倒计时。按钮用于启动时间。 Arduino倒数计时器代码和解释 ...
Arduino Uno 一个面包板 Arduino IDE 一个蜂鸣器 您还需要一些标准电线。 大多数入门电子套件都带有我们上面列出的所有部件,所以如果您有一个套件,请在开始这个项目前查看是否具有这些组件。 接线 这个项目的接线十分简单。本项目中所具有的功能大部分都通过代码来实现,所以我们不用将接线考虑在内。在接线部分,请将蜂...
Code Issues Pull requests Examples of how to create various sirens and alarms with Arduino. alarm arduino examples beginner-project example sound piezo siren example-project arduino-uno buzzer arduino-sketch example-code alarms piezo-buzzer arduinouno sirens arduino-siren Updated Jul 18, 2023 C+...
// 定义引脚const int hallSensorPin = 2; // 霍尔传感器连接的引脚const int buzzerPin = 3; // 蜂鸣器连接的引脚 // 监测参数设置const unsigned long MIN_DETECTION_TIME = 500; // 最小持续检测时间(ms)const unsigned long DEBOUNCE_TIME = 50; // 消抖时间(ms) // 状态变量unsigned long ...
and active buzzer, since the leds are active low ,how to send i2c data format , i have a doubt can i connect active high leds in my design(pcb) in future , i did not understand tables you mentioned for each hex in TRM pdf, can you help me example code (i2c with arduin...
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