First, we will power on the LED when the button is pressed, and power off the LED when the button is not pressed. And then we’ll modify the program to toggle the LED’s state only when we release the button. For more info on each component, also check out thisArduino LED tutoriala...
将Button1 信号引脚[S] 连接到 Arduino 数字引脚 [4] 将LED 正极引脚 [+] 连接到 200 欧姆电阻 将200 欧姆电阻的另一端连接到 Arduino 数字引脚[11] 将LED 负极引脚 [ - ] 连接到 Arduino 负极引脚 [GND] 第3 步:启动 Visuino,并选择 Arduino UNO 板类型 1 / 2 Visuino:也需要安装。下载免费版本或...
buttonState=reading;//only toggle the LED if the new button state is HIGHif(buttonState ==HIGH) { ledState= !ledState; } } }//set the LED:digitalWrite(ledPin, ledState);//save the reading. Next time through the loop,//it'll be the lastButtonState:lastButtonState =reading; }...
int toggleLed = 5; // 按钮控制的 LED 连接在引脚 5 int pushButton = 2; // 将按钮连接到引脚 2,这也是中断引脚 诠释ledState1 = 低;// 判断 led1 和 led2 的状态 int ledState2 = LOW; unsigned long previousMillis1 = 0; //存储上次 LED1 闪烁的时间 const long period1 = 1000; // l...
buttonState = reading; 包括按钮状态 // only toggle the LED if the new button state is HIGH 仅在按钮状态为 HIGH 时切换 LED 状态 if (buttonState == HIGH) { ledState = !ledState; } } } // set the LED: 设置LED 状态 digitalWrite(ledPin, ledState); ...
const byte ledPin = 13; const byte buttonPin = 2; // Boolean to represent toggle state volatile bool toggleState = false; void checkSwitch() { // Check status of switch // Toggle LED if button pressed if (digitalRead(buttonPin) == LOW) { ...
(reading!=buttonState){buttonState=reading;// only toggle the LED if the new button state is HIGHif(buttonState==HIGH){ledState=!ledState;}}}// set the LED:digitalWrite(ledPin,ledState);// save the reading. Next time through the loop, it'll be the lastButtonState:lastButtonState=...
#define BUTTON_PIN 2 #define LED_PIN LED_BUILTIN void setup(void) { pinMode(BUTTON_PIN, INPUT_PULLUP); pinMode(LED_PIN,OUTPUT); } void loop(void) { static byte toggle_sw_memmory=0; // Check for keypress if ( !digitalRead(BUTTON_PIN) ) { // Pulled up so zero = hit. ...
This sketch includes a pushbutton to toggle the mouse control state, so you can turn on and off mouse control. created 15 Sept 2011 updated 28 Mar 2012 by Tom Igoe this code is in the public domain */ #include "Mouse.h" // set pin numbers for switch, joystick axes, and LED: ...
int toggleLed = 5; // push button controlled led connected at pin 5 int pushButton = 2; // push butoon connected at pin 2 which is also interrupt pin int ledState1 = LOW; // to determine the states of led1 and led2 int ledState2 = LOW; ...