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。
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;int ledPin=8;voidsetup(){Serial.begin(9600);lcd.init();lcd.backlight();pinMode(BuzzerPin,OUTPUT);pinMode(ledPin,OUTPUT);}voidloop(){distance=ultrasonic...
Arduino code for home automation system that uses ultrasonic sensors to detect objects to switch off and switch on the lights automatically. arduino arduinolibrary Updated Aug 22, 2021 C++ apadevices / DS2482 Star 0 Code Issues Pull requests A modern library for DS2482-800 I2C to 1-Wire...
Step 1:Download theUltrasonicRanger Libraryfrom Github. Step 2:ReferHow to install libraryArduino if you are unsure on how to install library to your Arduino. Step 3:Copy the code into Arduino IDE and upload it. If you do not know how to upload the code, please check our guide onhow t...
// include the library code #include <Wire.h> #include <LiquidCrystal_I2C.h> #include <NewPing.h> LiquidCrystal_I2C lcd(0x27,16,2);//0x27 0x3F #define TRIGGER_PIN 2 // Arduino pin tied to trigger pin on the ultrasonic sensor. ...
Limit the Arduino environment to use only an I2C library. Get a = arduino('COM9','Uno','Libraries','I2C') Updating server code on board Uno (COM9). This may take a few minutes. a = arduino with properties: Port: 'COM9' Board: 'Uno' AvailablePins: {'D2-D13', 'A0-A5'...
Limit the Arduino environment to use only an I2C library. Get a = arduino('COM9','Uno','Libraries','I2C') Updating server code on board Uno (COM9). This may take a few minutes. a = arduino with properties: Port: 'COM9' Board: 'Uno' AvailablePins: {'D2-D13', 'A0-A5'...
/* Arduino example code for MaxBotix MB1240 XL-MaxSonar-EZ4 ultrasonic distance sensor: analog voltage output. More info: www.makerguides.com */ #define sensorPin A0 int distance = 0; void setup() { Serial.begin(9600); } void read_sensor() { distance = analogRead(sensorPin) * 1; } ...
Arduino Ultrasonic Sensor I have just received a very affordable fun toy from China AliExpress Market Place, the ultrasonic sensor, it is about RMB15 (USD2.50) excluding the shipping cost or you can get this Ultrasonic Sensor for a very good price from Amazon. … Continue reading → Posted ...
超声波选型指南Arduino - Ultrasonic Sensor 2.1 认识超声波 可在空气中传播的超声波频率,大约介于20~200KHz之间,其衰减程度与频率成正比(即频率越高,传播距离越短) 在室温20°C的环境中,声波的传输速度约为344m/s(**声音在水中传播的速度比在空气快60倍),因此,假设超声波往返的时间为600μs,可通过公式: ...