2、模拟输入 - Analog Input In this example we use a variableresistor(a potentiometer or a photoresistor), we read its value using one analog input of an Arduino board and we change the blink rate of the built-in LED
Graphical representation is available using Serial Plotter (Tools > Serial Plotter menu). Attach the center pin of a potentiometer to pin A0, and the outside pins to +5V and ground. This example code is in the public domain. https://www.arduino.cc/en/Tutorial/BuiltInExamples/ReadAnalogVolta...
AnalogReadSerial Reads an analog input on pin 0, prints the result to the serial monitor. Attach the center pin of a potentiometer to pin A0, and the outside pins to +5V and ground. This example code is in the public domain. */ 功能:读取模拟输入引脚A0的值,并将其打印到串行监视器。 ...
By Tom Igoe This example code is in the public domain. http://www.arduino.cc/en/Tutorial/AnalogInput */ int sensorPin = A0; // select the input pin for the potentiometer int ledPin = 13; // select the pin for the LED int sensorValue = 0; // variable to store the value coming ...
multiple simulation pins on the Arduino board (usually marked as A0-A5), which can be used to read analog signals.以下是一个简单的Arduino示例，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 ...
This example code is in the public domain.此代码示例位于公共域中。arduino.cc/en/Tutorial/...int sensorPin = A0; // select the input pin for the potentiometer 选择电位器的输入针脚 int ledPin = 13; // select the pin for the LED 选择 LED 针脚 int sensorValue = 0; // ...
2、读取模拟电压 - Read Analog Voltage Reads an analog input and prints the voltage to the Serial Monitor. 读取模拟输入并打印电压值到串口监视器。 This example shows you how to read an analog input on analog pin 0, convert the values from analogRead() into voltage, and print it out to the...
This example code is in the public domain. */ // These constants won't change. They're used to give names // to the pins used: const int analogInPin = A0; // Analog input pin that the potentiometer is attached to const int analogOutPin = 9; // Analog output pin that the LED ...
Connect a 10k potentiometer with wiper (middle) to pin A0 and one end to 5V, and the other end to Ground. This example simply uses thearduino analog readfunction analogRead() to read data from the specified analogue pin. Start the serial monitor, and observe the led period. The on-off ...
This example code is in the public domain.*/intsensorValue =0;intoutputValue =0;voidsetup() { pinMode(A0, INPUT); pinMode(9, OUTPUT); Serial.begin(9600); }voidloop() {//read the analog in value:sensorValue =analogRead(A0);//map it to the range of the analog out:outputValue =...