关于可调试灯光程序的问题

Klack

const int analogPin = A0;  
const int ledCount = 10;

int ledPins[] = {
  2, 3, 4, 5, 6, 7,8,9,10,11 };  


void setup() {
  Serial.begin(9600);
  for (int thisLed = 0; thisLed < ledCount; thisLed++) {
    pinMode(ledPins[thisLed], OUTPUT);
  }
}

void loop() {
  int sensorReading = analogRead(analogPin);
  int ledLevel = map(sensorReading, 0, 1023, 0, ledCount);

  for (int thisLed = 0; thisLed < ledCount; thisLed++) {
    if (thisLed < ledLevel) {
      digitalWrite(ledPins[thisLed], HIGH);
      Serial.println(sensorReading);
    }
    else {
      digitalWrite(ledPins[thisLed], LOW);
    }
  }
}
-------------------------------------------------------------------------------------------------------------------------------------------------------
以上语句及变量在该程序中的具体含义，求解
——————————————————————————————-
以上程序仅仅只是通过改变电流大小来控制各个小灯的简单程序，但本人有几处地方不是太明确，求助

Klack

const int analogPin = A0;   // the pin that the potentiometer is attached to
const int ledCount = 10;   // the number of LEDs in the bar graph

int ledPins[] = {
  2, 3, 4, 5, 6, 7,8,9,10,11 };   // an array of pin numbers to which LEDs are attached


void setup() {
  Serial.begin(9600);
  // loop over the pin array and set them all to output:
  for (int thisLed = 0; thisLed < ledCount; thisLed++) {
    pinMode(ledPins[thisLed], OUTPUT);
  }
}

void loop() {
  // read the potentiometer:
  int sensorReading = analogRead(analogPin);
  // map the result to a range from 0 to the number of LEDs:
  int ledLevel = map(sensorReading, 0, 1023, 0, ledCount);

  // loop over the LED array:
  for (int thisLed = 0; thisLed < ledCount; thisLed++) {
    // if the array element's index is less than ledLevel,
    // turn the pin for this element on:
    if (thisLed < ledLevel) {
      digitalWrite(ledPins[thisLed], HIGH);
      Serial.println(sensorReading);
    }
    // turn off all pins higher than the ledLevel:
    else {
      digitalWrite(ledPins[thisLed], LOW);
    }
  }
}

Be1ieve

ledCount表示所用的led有幾顆，與後面的ledPins[]數量對應

map(sensorReading, 0, 1023, 0, ledCount)這句是等比例縮放sensorReading
analogRead()的範圍0~1023，要轉換成0~ledCount，也就是0~10

Klack

非常感谢，懂了，谢谢帮忙{:soso_e179:}{:soso_e100:}