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。
Copy the above code and open with Arduino IDE ClickUploadbutton on Arduino IDE to upload code to Arduino Move your hand in front of sensor See the result on OLED and Serial Monitor ※ NOTE THAT: The about code automatically horizontal and vertical center aligns the text on OLED display. See...
在您的计算机上打开Arduino IDE软件。 用Arduino语言编码将控制你的电路。 单击“新建”打开新的草图文件。 Arduino代码 (Arduino Code) const int pingPin = 7; // Trigger Pin of Ultrasonic Sensor const int echoPin = 6; // Echo Pin of Ultrasonic Sensor void setup() { Serial.begin(9600); // Sta...
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 09...
Connect the +5V pin to +5v on your Arduino board. Connect Trigger to digital pin 7 on your Arduino board. Connect Echo to digital pin 6 on your Arduino board. Connect GND with GND on Arduino. In our program, we have displayed the distance measured by the sensor in inches an...
First we have to define the Trig and Echo pins. In this case they are the pins number 9 and 10 on the Arduino Board and they are named trigPin and echoPin. Then we need a Long variable, named “duration” for the travel time that we will get from the sensor and an integer variable...
Arduino IDE Wiring – Connecting MaxBotix MB1240 to Arduino UNO As mentioned in the introduction, MaxBotix sensors can be operated in different modes. The wiring diagrams below show you how you can connect the MB1240 sensor to the Arduino for analog voltage or pulse width operation. You can ...
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.
Arduino Ultrasonic Sensor Light Switcher: Hey guys, today I am going to make a light switcher. Some times I have things in my hand, and I don't have an extra hand to turn on the light, and it becomes an awkward situation. So I decide to make a light swit
lcd.print("IN: "); lcd.print(distanceIN); lcd.print(" "); delay(300); } Once you’ve compiled and uploaded this sketch to your Arduino, you should see the following in action. Move an object closer or farther away from your HC-SR04 ultrasonic sensor and you’ll see the centimeters...