以下是一个简单的Arduino代码示例,用于实现on/off非瞬时开关功能: 代码语言:txt 复制 // 定义引脚 const int buttonPin = 2; // 按钮连接到数字引脚2 const int ledPin = 13; // LED连接到数字引脚13 // 定义变量 int buttonState; // 当前按钮状态 int lastButtonState = LOW; // 上一次按钮状态 i...
void loop() { digitalWrite(13, HIGH); // turn the LED on (HIGH is the voltage level) delay(2000); // wait for a second digitalWrite(13, LOW); // turn the LED off by making the voltage LOW delay(1000); // wait for a second } 5、IDE设置 (串口选择、开发板型号选择、编译器选择...
OUTPUT);// Initialize digital pin 13 as an output.}// The main loop that continues forevervoidloop() {digitalWrite(13, HIGH);// turn the LED on (HIGH is the voltage level)delay(1000);// wait for a seconddigitalWrite(13, LOW);// turn the LED off by making the voltage LOWdelay(100...
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. And then we’ll mo...
建议在开始对 Arduino UNO 进行多任务编程之前,一次又一次地练习使用millis闪烁 LED ,以使逻辑清晰并让自己对 millis() 感到满意。在本教程中,中断还与 millis() 同时用于多任务处理。该按钮将是一个中断。因此,只要产生中断,即按下按钮,LED 就会切换到 ON 或 OFF 状态。
问arduino使用pySerial打开/关闭ledEN常见的ESP8266 NodeMCU开发板有 ESP8266 NodeMCU CP2102 和 ESP8266 ...
digitalWrite(13, HIGH); // turn the LED on (HIGH is the voltage level) delay(1000); // wait for a second digitalWrite(13, LOW); // turn the LED off by making the voltage LOW delay(1000); // wait for a second } 1. 2. ...
void on(); //打开led void off(); //关闭led boolean getState(); //获取led的状态 void disattach(); //释放引脚与led的绑定 }; #endif 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. ...
value:0到255之间的PWM频率值, 0对应off, 255对应on。 返回值 无 想想,如何通过两个按键开关实现亮度调节呢?当按第一个按键开关时,亮度值增加,按一次开关,亮度值增加一固定数值,同理,第二个开关也是按一下,亮度值减小一固定数值,最后将按键开关的操作产生的结果通过analogWrite()函数的模拟信号输出给LED。
串口输入2,led点亮,同时串口打印“ON”,舵机转动到90°。 串口输入4,led熄灭,同时串口打印“OFF”,舵机转动到180° 4.1 控制代码 #include <Servo.h> int led4=4; int led=13; Servo myservo;//创建舵机对象 void setup(){ myservo.attach(9, 500, 2500); ...