In this Arduino tutorial I will show you how to turn an LED on and off with a push button. In fact, we’ll do 2 slightly different applications.First, we will power on the LED when the button is pressed, and power off the LED when the button is not pressed....
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To go further, I encourage you to checkthis tutorial on how to turn an LED on and off with a push button. In the tutorial you will see how to include the push button in various simple applications using LEDs. You will also get a much more complete explanation on the debounce mechanism...
if (buttonState == HIGH) { // turn LED on: digitalWrite(ledPin, HIGH); } else { // turn LED off: digitalWrite(ledPin, LOW); } } 代码的工作原理 下面概述了代码的工作原理: 变量和常量: buttonPin:连接按钮的引脚 2。 ledPin:连接 LED 的引脚 13。 buttonState:存储按钮的状态(HIGH 或 LOW...
turn on a color ,you need to set it as 0***/const int redPin = 11; // R petal on RGB LED module connected to digital pin 11const int greenPin = 10; // G petal on RGB LED module connected to digital pin 10const int bluePin = 9; // B petal on RGB LED module connected to...
// Button pressed, enter low power mode digitalWrite(ledPin, HIGH); // Turn on LED delay(100...
Blink : Turn an LED on and off. 闪 烁:开启LED的开启和关闭。 DigitalReadSerial: Read a switch, print the state out to the Arduino Serial Monitor. DigitalReadSerial:阅读交换 机,打印到Arduino串行监视器的状态。 AnalogReadSerial: Read a potentiometer, print it's state out to the Arduino Serial...
if (ledState == LOW) { // if the LED is off turn it on and vice-versa ledState = HIGH...
LED模块 数字 D4 蜂鸣器 数字 D5 0.96寸OLED显示屏 I2C I2C, 0x78(默认)按键 数字 D6 旋转电位...
// Keep in mind the pull-up means the pushbutton's logic is inverted. It goes // HIGH when it's open, and LOW when it's pressed. Turn on pin 13 when the // button's pressed, and off when it's not: if (sensorVal == HIGH) { ...