Week 4 Mon. September 12, 2016 | Project 6 In-class assignment

Quickly look up DIY potentiometers and post links to 3 on blog.

This link has more than 3 possible DIY potentiometers

http://electronics.stackexchange.com/questions/24420/how-can-i-make-my-own-potentiometer


















CODE

byte ledPin[] = {4, 5, 6, 7, 8, 9, 10, 11, 12, 13};
int ledDelay;
int direction = 1;
int currentLED = 0;
int counterdirection = -1;
int secondLED = 9;
unsigned long changeTime;
int potPin = 2;

void setup() {
  for (int x=0; x<10; x++){
      pinMode(ledPin[x], OUTPUT);
    }
    changeTime = millis();

  }

  void loop() {
    ledDelay = analogRead(potPin);
    if ((millis() - changeTime) > ledDelay) {
      changeLED();
      changeTime = millis();
      }
    }
 
void changeLED(){
    for (int x=0; x<10; x++){
      digitalWrite(ledPin[x], LOW);
      }

      digitalWrite(ledPin[currentLED], HIGH);
      digitalWrite(ledPin[secondLED], HIGH);
   
      currentLED += direction;
      secondLED += counterdirection;

      if (currentLED == 4) {direction = -1;}
      if (currentLED == 0) {direction = 1;}
      if(secondLED == 9) {counterdirection = -1;}
      if(secondLED == 5) {counterdirection = 1;}
  }