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。
The HC-SR04 is an inexpensive, easy to use ultrasonic distance sensor, with a range of 2cm to 400 cm. It is commonly used in obstacle avoiding robots and automation projects. In this tutorial, you will learn how the sensor works and how to use it with Arduino. I have included 5 exampl...
You can upload the example code with the IDE. /* 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(...
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 ...
HC-SR04P HCSR04P Ultrasonic Sensor HC-SR04 HCSR04 Measuring Distance Sensor LED Display Module for Arduino Robot 4.8 4 ReviewsColor: 1Product sellpoints Easy Integration with Arduino:Designed for Arduino, this sensor module is a breeze to set up and use with Arduino code for distance sensor. ...
HC-SR04 Ultrasonic Sensor interface with Arduino HC-SR04 Ultrasonic Sensor code for Arduino /* Ping))) Sensor This sketch reads a PING))) ultrasonic rangefinder and returns the distance to the closest object in range. To do this, it sends a pulse to the sensor to ...
A sensor is a device that converts one type of energy to another. Arduino is a small microcontroller board with a USB plug to connect to the computer. The Arduino board senses the environment by receiving input from a variety of sensors and can affect its surroundings by controlling lcds, ...
With Arduino ultrasonic sensors like the HC-SR04, you can measure the distance. Through this Arduino tutorial, you will learn how an Ultrasonic sensor works and how do you use it with the Arduino and even with the Raspberry Pi.
Learn how to use ultrasonic sensor to control servo motor. The detail instruction, code, wiring diagram, video tutorial, line-by-line code explanation are provided to help you quickly get started with ESP32. Find this and other ESP32 tutorials on esp32io
Arduino Library Overview tip If this is your first time using Arduino, we highly recommend you to refer to Getting Started with Arduino or see the simple tutorial below: The button below will take you directly to our Arduino program library for the Grove Ultrasonic Sensor (SMS812)....