1) 利用 Arduino 的数字引脚给超声波传感器的 Trig 引脚至少 10 微秒的高电平信号,这会让HC-SR04 超声波测距模块发射出8个40K赫兹的超声波脉冲(ultrasonic burst)。 2) 8个超声波脉冲发出后,echo引脚会输出高电平。假如没有声波返回,echo引脚会在38微秒后输出低电平。假如有声波返回,echo引脚会进入低电平状态。
*/// 导入库文件#include"Ultrasonic.h"#include<LiquidCrystal_I2C.h>#include"Wire.h"LiquidCrystal_I2Clcd(0x27,16,2);//设置(trig,echo)的连线Ultrasonicultrasonic(A0,A1);// 设置变量int distance;// 设置引脚int BuzzerPin=7;voidsetup(){Serial.begin(9600);lcd.init();lcd.backlight();pinMode(Bu...
The Grove Ultrasonic Distance Sensor supports 3.3V, allowing it to be directly connected to the I/O of the Raspberry Pi instead of using a voltage conversion circuit With the onboard plug and play Grove connector, if you have aGrove-Base shieldor aSeeeduino, you can easily connect the Grove...
* Tutorial is available here: https://arduinogetstarted.com/tutorials/arduino-ultrasonic-sensor */ int trigPin = 9; // TRIG pin int echoPin = 8; // ECHO pin float duration_us, distance_cm; void setup() { // begin serial port Serial.begin (9600); // configure the trigger pin to o...
/* Arduino example code for MaxBotix MB1240 XL-MaxSonar-EZ4 ultrasonic distance sensor: pulse width output. More info: www.makerguides.com */ #define sensorPin 2 long distance = 0; long duration = 0; void setup() { pinMode(sensorPin, INPUT); Serial.begin(9600); } void read_sensor()...
const int echoPin = 3; // Echo pin of the ultrasonic sensor const int irSensorPin = 4; // IR sensor pin const int ledPin = 7; // LED pin const int lightPin = 6; // Light pin 这些行声明用于各种组件的引脚编号的常数,例如超声波传感器(trigPin 和 echoPin)、红外传感器、LED 和其他光源...
void setup() { Serial.begin(9600); delay(100); Serial.println("Init the sensor"); } void loop() { SerialCmd(); delay(200); } void SerialCmd() { int i; for(i = 0;i < 4;i++){ Serial.write(EnTempCmd[i]); } while (Serial.available() > 0) //如果串口接收到任何数据 ...
void setup() // 初始化串口通信及连接SR04的引脚 { Serial.begin(9600);pinMode(TrigPin, OUTPUT);pinMode(EchoPin, INPUT); // 要检测引脚上输入的脉冲宽度，需要先设置为输入状态 Serial.println("Ultrasonic sensor:");} void loop()// 产生一个10us的高脉冲去触发TrigPin digitalWrite(TrigPin,...
#define ECHO_PIN 7 // Arduino pin tied to echo pin on the ultrasonic sensor. #define MAX_DISTANCE 100 // Maximum distance we want to ping for (in centimeters)。 #define ALARM 3 float sinVal; int toneVal; 首先编写基本的 setup()功能–我们现在只处理灯光。我在主循环开始前添加了5秒的延迟...
void setup(){ // 初始化串口通信及连接的引脚 Serial.begin(9600); pinMode(TrigPin, OUTPUT); // 要检测引脚上输入的脉冲宽度,需要先设置为输入状态 pinMode(EchoPin, INPUT); Serial.println("Ultrasonic sensor:"); } void loop(){ // 产生一个10us的高脉冲去触发TrigPin digitalWrite(TrigPin, LOW)...