If the pin has been configured as an OUTPUT with pinMode(), its voltage will be set to thec...
5, 6, 9, 10, and 11. On the Arduino Mega, it works on pins 2 through 13. Older Arduino boards with an ATmega8 only support analogWrite() on pins 9, 10, and 11. You do not need to call pinMode() to set the pin as an output before calling analogWrite(). ...
int ledPin = 13; // select the pin for the LED int sensorValue = 0; // variable to store the value coming from the sensor 为电位器选择输入针 为LED 选择针 存储从传感器获取值的变量 void setup() { // declare the ledPin as an OUTPUT: 定义ledPin 为输出 OUTPUT pinMode(ledPin, OUTPUT...
If the pin has been configured as an OUTPUT with pinMode(), its voltage will be set to the corresponding value: 5V (or 3.3V on 3.3V boards) for HIGH, 0V (ground) for LOW. 如果引脚被设置为INPUT,digitalWrite()会激活输入引脚的上拉电阻。 If the pin is configured as an INPUT, digitalW...
const int ledPin = 13; // the number of the LED pin // variables will change: int buttonState = 0; // variable forreading the pushbutton status void setup() { // initialize the LED pin as an output: pinMode(ledPin, OUTPUT); ...
int ledPin = 13; // select the pin for the LED int sensorValue = 0; // variable to store the value coming from the sensor void setup() { // declare the ledPin as an OUTPUT: pinMode(ledPin, OUTPUT); } void loop() {
int motorPin = 9; // Transistor base connected to digital pin 9 void setup() { pinMode(buttonPin, INPUT); // Initialize button pin as an input pinMode(motorPin, OUTPUT); // Initialize motor pin as an output } void loop() { ...
pinMode ( ledPin , OUTPUT ) ; // This will initialize the LED pin as an output pin : pinMode ( hallPin , INPUT ) ; // This will initialize the hall effect sensor pin as an input pin to the Arduino : Serial.begin( 9600 ) ; ...
//configure pin2 as an input and enable the internal pull-up resistor pinMode(2, INPUT_PULLUP); pinMode(13, OUTPUT); } void loop() { //read the pushbutton value into a variable int sensorVal = digitalRead(2); //print out the value of the pushbutton ...
constintledPin=9;// the pin that the LED is attached tovoidsetup(){// initialize the serial communication:Serial.begin(9600);// initialize the ledPin as an output:pinMode(ledPin,OUTPUT);}voidloop(){bytebrightness;// check if data has been sent from the computer:if(Serial.available())...