思维导图Mind mappingArduino逻辑控制（一）：按键开关控制LED灯。Arduino Logic Control (1): Push button switch to control LED lights.首先打开Arduino IDE，依次选择文件，示例，Digital,DigitallnputPullup。将此程序上传到Arduino开发板上，可以发现在之前的示例中也一直有一个上拉电阻，但是在本次演示中，上拉...
/*ButtonTurns on and off a light emitting diode(LED) connected to digital pin 13,when pressing a pushbutton attached to pin 2.The circuit:- LED attached from pin 13 to ground through 220 ohm resistor- pushbutton attached to pin 2 from +5V- 10K resistor attached to pin 2 from ground- ...
项目地址:https://www.tinkercad.com/things/fxAUiYvu7aG /*Button Turns on and off a light emitting diode(LED) connected to digital pin 13, when pressing a pushbutton attached to pin 2. The circuit: * LED attached from pin 13 to ground * pushbutton attached to pin 2 from +5V * 10K ...
int sensorVal = digitalRead(2); //print out the value of the pushbutton Serial.println(sensorVal); // Keep in mind the pullup 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...
It also showed how you can read the value of a push-button. Reading the value of a push-button is necessary when you want to perform certain actions like turning on and off an LED. Happy coding! Check out my YouTube channel for tutorials about embedded systems, IoT, and web development...
The LED and the Pushbutton elements in action The LED is relatively simple, as it only has two output states: on and off. Behind the scenes, it uses an SVG filter to create the lighting effect. The pushbutton is more interesting. It also has two states, but it has to react to user...
我们打算是IO15是按键,IO2是板载LED灯。 所以修改。 注意如何设置输入输出模式,OUTPUT和INPUT。 如何读取某个管脚的电平状态。 /* Button Turns on and off a light emitting diode(LED) connected to digital pin 13, when pressing a pushbutton attached to pin 2. ...
We also learned some more software concepts, and then ended with a lab that combined what we learned about LEDs and pushbuttons to create a reaction time tester to analyze how quickly you can press a button after an LED turns off. This month, we will first learn how to use the Arduino...
digitalWrite(LED_BUILTIN, LOW); delay(100); digitalWrite(LED_BUILTIN, HIGH); delay(150); } 现在,转到:“草图”》“上传”,或按“ Upload =》”图标上传。 如果一切顺利,您应该会看到板载橙色LED以心跳的方式闪烁。 如果您使用的是Linux,并且遇到“打开串口错误。..”之类的错误,则应阅读此书。
//configure pin 2 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 ...