const int buttonPin = 2;const int ledPin = 13;将开关的状态保存在buttonState值内 int buttonState = 0; 将LED接口设置为输出口；将开关接口设置为输入口 pinMode(ledPin, OUTPUT);pinMode(buttonPin, INPUT);使用digitalRead功能检查开关状态 buttonState = digitalRead(buttonPin);如果开关被按，那么。。。
如果没有将pinMode() 设置为OUTPUT,然后将一个LED连接至pin。当调用digitalWrite(HIGH)时,LED会很暗淡。因为如果没有明确的设置pinMode(),digitalWrite()将默认启用内部上拉电阻,这个电阻有很强的限流作用。 NOTE: If you do not set the pinMode() to OUTPUT, and connect an LED to a pin, when calling ...
const int buttonPin = 2; const int ledPin = 13; 将开关的状态保存在buttonState值内 int buttonState = 0; 将LED接口设置为输出口;将开关接口设置为输入口 pinMode(ledPin, OUTPUT); pinMode(buttonPin, INPUT); 使用digitalRead功能检查开关状态 buttonState = digitalRead(buttonPin); 如果开关被按,那么。
void setup() { pinMode(11, OUTPUT); analogWrite(11, 127); //Operates at a reduced voltage and current. } I connected a small LED to pin 11 to see the results of the above PWM code sample. As expected, it operates at a reduced brightness due to the lower voltage. The ‘127’ is...
pinMode(button1Pin, INPUT); pinMode(button2Pin, INPUT); // initialize the relay pin as an output: pinMode(relay1Pin, OUTPUT); pinMode(relay2Pin, OUTPUT); } void loop(){ // read the value from the sensor: sensorValue =analogRead(sensorPin); ...
pinMode(fanRelayPin, OUTPUT);pinMode(lightRelayPin, OUTPUT);Serial.begin(9600);}void loop() {int sensorValue = analogRead(dhtPin);// 使用简单的算法将原始数据转换为温度和湿度值// 这里使用一个简单的线性关系来近似温度和湿度,具体系数需要根据实际传感器进行调整temperature = (sensorValue / 10.0) ...
const int buttonPin = 2; // the number of the pushbutton pin const int ledPin = 13; // the number of the LED pin // Variables will change: int ledState = HIGH; // the current state of the output pin int buttonState; // the current reading from the input pin ...
Serial.println(outputValue);最后一个换行,\t为一个table间隔。 analoginput analogwritemega mega提供14路8位pwm输出。引脚0-13,for (int thisPin = lowestPin; thisPin <= highestPin; thisPin++) { pinMode(thisPin, OUTPUT); },连续定义为输出。for (int thisPin = lowestPin; thisPin <= highestPin...
这样我们就完成了实验的连线部分。 将代码上传到开发板。 程序代码(直接打开对应例程即可) int potpin=0;//定义模拟接口0 int ledpin=11;//定义数字接口11(PWM 输出) int val=0;// 暂存来自传感器的变量数值 void setup() { pinMode(ledpin,OUTPUT);//定义数字接口11 为输出 ...
const int ledPin = LED_BUILTIN; int ledState = LOW; unsigned long previousMillis = 0; const long interval = 1000; void setup() { pinMode(ledPin, OUTPUT); } void loop() { unsigned long currentMillis = millis(); if (currentMillis - previousMillis >= interval) { ...