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。
Arduino - Ultrasonic Sensor Arduino - 超声波传感器的实现 Arduino’s pins can generate a 10-microsecond pulse and measure the pulse duration. Therefore, we can get the distance from the ultrasonic sensor by using two Arduino’s pins: Arduino的引脚可以产生10微秒的脉冲并测量脉冲持续时间。因此,我们...
* TechValer's own creation. TechValer has referred to different projects and websites to * find an easy code for beginners to get started with Ultrasonic Sensor HC-SR04 and Arduino. * TechValer does not claim this code to be its own. TechValer is greatly thankful for original * creaters ...
/* 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 ...
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.
图1-6 Common parts: Raspberry Pi, Arduino Uno, ultrasonic sensor, battery holder, and breadboard你不需要对显示器和键盘着迷。一旦你阅读了第二章,在那里我们安装和配置了 Raspberry Pi,你不再需要它们了。我有几个无线键盘,因为我通常会同时进行几个项目。对于显示器,我只需使用一台带有 HDMI-DVI 适配器...
以下为Arduino Code,每条代码都带有注释 // Includes the Servo library #include <Servo.h>. // Defines Tirg and Echo pins of the Ultrasonic Sensor const int trigPin = 10; const int echoPin = 11; // Variables for the duration and the distance ...
/* Example code for HC-SR04 ultrasonic distance sensor with Arduino. No library required. More info: https://www.makerguides.com */ // Define Trig and Echo pin: #define trigPin 2 #define echoPin 3 // Define variables: long duration; ...
Ultrasonic Sensor measure the distance of target objects or materials through the air using "non-contact" technology. They measure distance without damage and are easy to use. The output Signals received by the sensor are in the analog form, and output is digitally formatted and processed by ...