Assignment: Sensing: Potentiometers
Collaborators:
1. Project Description
: Get analog input from three Potentiometers and control three LEDs' blinking and dimming rate
2. Components Used
- Arduino
- Three LEDs
- Resistors
- Three Potentiometers
- Diffuser from previous assignment
3. Arduino Code for extra one
/* Each potentiometer could control each LED's blinking and dimming rate at the same time. */
// Analog pin settings
int aIn = 0; // Potentiometers connected to analog pins 0, 1, and 2
int bIn = 1; // (Connect power to 5V and ground to analog ground)
int cIn = 2;
// Digital pin settings
int aOut = 9; // LEDs connected to digital pins 9, 10 and 11
int bOut = 10; // (Connect cathodes to digital ground)
int cOut = 11;
// Values
int aVal = 0; // Variables to store the input from the potentiometers
int bVal = 0;
int cVal = 0;
void setup()
{
pinMode(aOut, OUTPUT); // sets the digital pins as output
pinMode(bOut, OUTPUT);
pinMode(cOut, OUTPUT);
Serial.begin(9600); // Open serial communication for reporting
}
void loop()
{
aVal = analogRead(aIn)/4 ; // read input pins, convert to 0-255 scale
bVal = analogRead(bIn)/4 ;
cVal = analogRead(cIn)/4 ;
digitalWrite(aOut, HIGH); // Send new values to LEDs
delay(aVal);
digitalWrite(aOut, LOW);
delay(aVal);
digitalWrite(bOut, HIGH); // Send new values to LEDs
delay(bVal);
digitalWrite(bOut, LOW);
delay(bVal);
digitalWrite(cOut, HIGH); // Send new values to LEDs
delay(cVal);
digitalWrite(cOut, LOW);
delay(cVal);
}
4. Picture and Video
