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...
/* 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; } ...
/Firmware - Arduino example code. Make sure to check the pin definitions and what you are connecting to. Documentation Hookup Guide - Basic hookup and project example using the ultrasonic sensor. (Note: The example code used in this tutorial is slightly different than the basic example used ...
Ultrasonic Ranging Sensor(3m) x1 Software Arduino IDE Connection Diagram Before burning the code, please switch the transceiver mode switch of the expansion board to AUTO, and the run/compile switch to OFF; after burning the code, switch the run/compile switch to ON, and select the serial ...
The pinouts and how to connect an ultrasonic sensor in a circuit How the pulseIn() function works 通过完整课程学习更多知识 Arduino Bootcamp : Learning Through Projects Build 15+ complete Arduino projects from scratch, a car controlled using an app, cell phone, games, LEDs, sensors, sound ...
Hc-Sr04 Ultrasonic Sensor Module 40kHz for Arduino Tx and Rx Detection, Find Details and Price about Distance Measurement Module Radar Sensor from Hc-Sr04 Ultrasonic Sensor Module 40kHz for Arduino Tx and Rx Detection - Shenzhen KangTong Technology Co.,
The HC-SR04 Ultrasonic Sensor is a very affordable proximity/distance sensor that has been used mainly for object avoidance in various robotics projects . It essentially gives your Arduino eyes / spacial awareness and can prevent your robot from crashing or falling off a table. It has also been...
This example code is in the public domain. https://www.arduino.cc/en/Tutorial/BuiltInExamples/Ping */ // this constant won't change. It's the pin number of the sensor's output: const int pingPin = 14; void setup() { // initialize serial communication: ...
Sample Code(IIC Mode) /* Sample code for test the SRF02 with the I2C mode based on Arduino UNO! Command for reference:http://robot-electronics.co.uk/htm/srf02techI2C.htm Connection: SRF02 Arduino 5v Vcc -> 5V SDA -> A4 SCL -> A5 Mode -> no connection 0v Ground -> GND */#in...