(2)模拟串口读 - Analog Read Serial This example shows you how to read analog input from the physical world using a potentiometer. Apotentiometeris a simple mechanical device that provides a varying amount of resistance when its shaft is turned. By passing voltage through a potentiometer and into...
2、数字串口读取 - Digital Read Serial Read a switch, print the state out to the Arduino Serial Monitor. 读取开关状态,并打印状态到 Arduino串口监视器。 This example shows you how to monitor the state of a switch by establishingserial communicationbetween your Arduino and your computer over USB. ...
Here you can find out how Arduino shiftIn works and how fast it is. The main use for the function to receive serial input from a parallel to serial chip e.g. 74HC165 (8 bits).This allows you to increase the number of inputs to the processor using only two processor pins (you can ...
3.Click on Deploy >Upload to Arduino...>Select the Arduino Boardof your Arduino based PLC >Select the Serial Port> Click on the check button:Debug after upload. AndUpload. 4.Add some voltage to the I0.0 input and see how the watch node changes its state!
// digital pin 2 has a pushbutton attached to it. Give it a name:intpushButton=2;// the setup routine runs once when you press reset:voidsetup(){// initialize serial communication at 9600 bits per second:Serial.begin(9600);// make the pushbutton's pin an input:pinMode(pushButton,I...
演示如何使用模拟引脚读取来自某个传感器的输入：The following is a simple Arduino example. Demonstration of how to use analog pins to read the input from a sensor:```cpp// 定义一个变量来存储读取的值int sensorValue = 0;void setup() { // 初始化串口，设置波特率为9600 Serial.begin(9600);...
TIP: We are wiring a cable from the 5V of the M-Duino Slave PLC to its I0.7 analog input, to add some voltage to the input and get a result different from 0.Now, open the serial monitor from the master, and read the first register of the slave PLC!
The Serial hardware module does it all for you and takes the pressure off the main processor - only interrupting the processor if a complete byte is received at the serial input. So all the processor needs to to is read a byte from the hardware module....
In this Arduino Serial example, we will write text to the Arduino serial port, which will send it over the USB cable to your computer, which will then display that text in a terminal window. In the ‘setup()’ function mentioned above, add the following lines to start the Arduino serial...
char inChar = (char)Serial.read(); // add it to the inputString: inputString += inChar; // if the incoming character is a newline, set a flag // so the main loop can do something about it: if (inChar == '\n') {