Seesaw Effect Using LEDs

Solving Approach:

How do you plan to solve it?

Read the potentiometer on A0 with default reference: 

A0 Potentiometer reading 0..1023  maps  to 0 ..100% . 

Control brightness by pwm : duty cycle 0 .. 255  maps to brightness 0 to 100%

Potentiometer reading=x

I did this in EXCEL sheet: 

Percentage-wise:

using raw measurements, potentometer range 0 to 1023.

Controlling brightness by pwm: 

0 % maps to 0 on the pwm pin

25% maps to 63 analogWrite on th epwm pin

50 % map sto 127

75% maps to 191

100% maps to 255

using 330Ohm resistors and 10K pot.

Code

/*Paste your code here*/
int potPin = 0;
int pwmPin[5] = {10, 9, 6, 5, 3};

  int pot;
  int poti;

void setup()
{
  int i;
  poti=1023;
  for (i=0; i < 5; i++) {
    pinMode(pwmPin[i], OUTPUT);
  }
  Serial.begin(9600);
}


void loop()
{

  int brightness[5];
  int i;

    pot = analogRead(potPin);
    // print only if potentiometer is moved
    if (pot != poti) {
      Serial.print("Potentiometer: ");
      Serial.println(pot);
      brightness[0] = map(pot, 0, 1023, 0, 255) ;
      brightness[1] = map(pot, 0, 1023, 63, 191) ;
      brightness[2] = 127;
      brightness[3] = map(pot, 0, 1023, 191, 63) ;
      brightness[4] = map(pot, 0, 1023, 255, 0) ;
  

    for (i=0; i < 5; i++) {
      analogWrite(pwmPin[i], brightness[i]);
      Serial.print(brightness[i]);
      Serial.print("  ");
    }
    Serial.println("");
    poti=pot;
  }
  delay(100);
}


 

Output

Video

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Photo of Output

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