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 an analog input on your board, it...
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...
示例名称为 AnalogReadSerial，专注于串口模拟读取。该示例从针脚 0 读取模拟输入，并将结果打印到串口监视器。若未连接开发板，执行代码会报错。正确连接电位器至针脚 A0，外侧针脚至 +5V 和接地，便能完成示例的硬件搭建。代码示例位于公共域。示例代码分为设置函数（setup）和循环函数（loop）两部分。在...
This example code is in the public domain. http://www.arduino.cc/en/Tutorial/ReadAnalogVoltage */// the setup routine runs once when you press reset:voidsetup(){// initialize serial communication at 9600 bits per second:Serial.begin(9600);}// the loop routine runs over and over again f...
int analogPin = 3; // potentiometer connected to analog pin 3 int val = 0; // variable to store the read value void setup() { pinMode(ledPin, OUTPUT); // sets the pin as output } void loop() { val = analogRead(analogPin); // read the input pin ...
// put your main code here, to run repeatedly: } 1. 2. 3. 4. 5. 6. 7. 8. 9. 如果你使用过C/C++语言,你会发现Arduino的程序结构与传统的C/C++结构的不同之处就在于Arduino程序中没有main函数 准确说,其实并不是Arduino没有main函数,而是main函数的定义隐藏在了Arduino的核心库文件中。Arduino开...
// put your setup code here, to run once: pinMode(13, OUTPUT); Serial.begin(9600); } void loop() { char ch; if(Serial.available()){ ch = Serial.read(); flashDashDot(MorseTable[ch]); delay(dotLength*2); } } void flashDashDot(const char * morseCode) ...
* 4.7K resistor on analog 0 to ground created 21 Jan 2010 modified 31 May 2012 by Tom Igoe, with suggestion from Michael Flynn This example code is in the public domain. http://www.arduino.cc/en/Tutorial/Tone2 */ void setup() { ...
This example code is in the public domain. http://www.arduino.cc/en/Tutorial/AnalogInput */intsensorPin=A0;// select the input pin for the potentiometerintledPin=13;// select the pin for the LEDintsensorValue=0;// variable to store the value coming from the sensorvoidsetup(){// decla...
格瑞图:Arduino-0002-内置示例-模拟读 Analog Read Serial 格瑞图:Arduino-0003-内置示例-最简化代码 Bare Minimum 格瑞图:Arduino-0004-内置示例-闪烁 Blink 1、示例代码及解析 (1)代码 /* DigitalReadSerial Reads a digital input on pin 2, prints the result to the Serial Monitor ...