Arduino PWM LED不衰減或退出

我正在試圖製作一個Arduino鬧鬼的南瓜，使用PIR傳感器來觸發燈光和嘴巴的LED。我想讓嘴巴的LED立即關閉，但希望眼睛消失。我已經研究了幾個小時，並且無法弄清楚爲什麼眼睛的LED不會褪色或熄滅，即使相同的代碼snippit在它自己的程序中工作得很好。我可能錯過了一些小而簡單的東西，但似乎無法找到它。Arduino PWM LED不衰減或退出

要溫柔。我知道代碼很混亂。我嘗試了很多不同的東西，並傾向於將它們評論出來，而不是刪除，以備日後需要時使用。

//Uses a PIR sensor to detect movement. 
//Randomly selects a number that corresponds to a set of LED's 
//Lights up LED's 
//Author: 
//Date: 11/12/2014 

int inputPin = A1;    // choose the input pin (for PIR sensor) 
int pirState = LOW;    // we start, assuming no motion detected 
int val = 0;     // variable for reading the pin status 
//int randNumber;     //variable for holding the random number 
//int eyeblue =6;     //Variable for Blue eye LED's 
//int eyered =9;     //Variable for Red eye LED's 
//int eyegreen =3;    //Variable for Green eye LED's 
//int mouthblue =10;    // Variable for Blue mouth LED's 
//int mouthred = 11;    //Variable for Red mouth LED's 
//int mouthgreen = 5;   //Variable for Green eye LED's 
int eyespin = 0; 
int mouthpin = 0; 

int moutharray[] ={ 
    5,10,11}; 
int eyesarray[] = { 
    3,6,9}; 
//int thisPin ; 


void setup(){ 
    Serial.begin(9600); 
    pinMode(inputPin, INPUT);  // declare PIR sensor as input 
    pinMode(3, OUTPUT); 
    pinMode(5, OUTPUT); 
    pinMode(6, OUTPUT); 
    pinMode(9, OUTPUT); 
    pinMode(10, OUTPUT); 
    pinMode(11, OUTPUT); 
    //randomSeed(analogRead(0)); 
} 

void motion(){ 

    val = digitalRead(inputPin); // read input value 
    if (val == HIGH) {   // check if the input is HIGH 
    eyes(); 
    //mouth(); 
    delay(1000); 

    if (pirState == LOW) { 
     // we have just turned on 
     Serial.println("Motion detected!"); 
     // We only want to print on the output change, not state 
     pirState = HIGH; 
     delay(300); 
    } 
    } 
    else { 
    delay(300);  
    if (pirState == HIGH){ 
     // we have just turned of 
     Serial.println("Motion ended!"); 
     // We only want to print on the output change, not state 
     pirState = LOW; 
    } 
    } 
} 


void eyes(){ 
    eyespin = eyesarray [random (0, 3)]; 
    mouthpin = moutharray[random (0, 3)]; 

    for(int fadeValue = 0 ; fadeValue <= 255; fadeValue +=5) { 
    digitalWrite(eyespin, fadeValue); // turn the LED on (HIGH is the voltage level) 
    delay(30);        
    } 

    digitalWrite(mouthpin, HIGH); // turn the LED on (HIGH is the voltage level) 
    delay(500);    // wait for a second 


    for(int fadeValue = 255 ; fadeValue >= 0; fadeValue -=5) { 
    digitalWrite(eyespin, fadeValue); // turn the LED off by making t 
    delay(30); 
    } 
    digitalWrite(mouthpin, LOW); // turn the LED off by making the voltage LOW 

    delay(500);    // wait for a second 

} 

void loop(){ 
    // eyes(); 
    // mouth(); 
    motion(); 
}

來源

2014-11-15 Dajan Ra

非常簡單的監督。行：

for(int fadeValue = 255 ; fadeValue >= 0; fadeValue -=5) { 
digitalWrite(eyespin, fadeValue);

應該寫成：

for(int fadeValue = 255 ; fadeValue >= 0; fadeValue -=5) { 
analogWrite(eyespin, fadeValue);

通知其現在analogWrite而非digitalWrite。數字寫入只能生成值0/1，我們需要0-255。

希望這可以解決你的問題。

來源

2014-11-21 22:19:10 Drew

非常感謝！ –

Arduino PWM LED不衰減或退出

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