Sensing 1: Potentiometers

Description
For this lab, I used 2 Potentiometers (Pots) to control the operation of 3 LEDs. One of the Pots was connected through the Arduino’s analog-in port (A0) to control the brightness of all 3 LEDs simultaneously. Another Pot was connected to a different analog-in port (A1) to control the blinking rate.
Components Used
1- Arduino Board
3- 220 Ω Resistors
1- Breadboard
2 - Potentiometers
Connecting wires
Code
/*
 * one pot dims, the other pot changes the blinking rate
 * modification of the following
 * http://www.arduino.cc/en/Tutorial/AnalogInput
 */
int pot1Pin = 0;   // select the input pin for the potentiometer 1
int pot2Pin = 1;   // select the input pin for the potentiometer 2
int pot1Val = 0;   // variable to store the value coming from pot 1
int pot2Val = 0;   // variable to store the value coming from pot 2
int led1Pin = 9;   // select the pin for the LED 1
int led2Pin = 10;  // select the pin for the LED 2
int led3Pin = 11;  // select the pin for the LED 3
void setup() {
   pinMode(led1Pin, OUTPUT);  // declare the led1Pin as an OUTPUT
   pinMode(led2Pin, OUTPUT);  // declare the led2Pin as an OUTPUT
}
void loop() {
   pot1Val = analogRead(pot1Pin);   // read the value from pot 1, between 0 - 1024, for dimming
   pot2Val = analogRead(pot2Pin);   // read the value from pot 2, between 0 - 1024, for blinking
   analogWrite(led1Pin, pot1Val/4); // dim LED to value from pot1
   analogWrite(led2Pin, pot1Val/4); // ... pot2
   analogWrite(led3Pin, pot1Val/4); // ... pot3
 
   delay(pot2Val);                  // stop the program for some time, meaning, LED is on for this time
   analogWrite(led1Pin, 0);         // dim LED to completely dark (zero)
   analogWrite(led2Pin, 0);         
   analogWrite(led3Pin, 0);        
  
   delay(pot2Val);                  // stop the program for some time, meaning, LED is OFF for this time
}