Experiment One

Materials:

Arduino uno

Breadboard

Force sensitive resistor

LED

10KOhm & 220 Ohm resistors

Credit: 

http://www.instructables.com/id/How-to-use-a-Force-Sensitive-Resistor-Arduino-Tuto/

The code

/* How to use a Force sensitive resistor to fade an LED with Arduino

   More info: http://www.ardumotive.com/how-to-use-a-force-sensitive-resistor-en.html 

   Dev: Michalis Vasilakis // Date: 22/9/2015 // www.ardumotive.com  */

   

//Constants:

const int ledPin = 3;     //pin 3 has PWM funtion

const int sensorPin = A0; //pin A0 to read analog input

//Variables:

int value; //save analog value

void setup(){

  pinMode(ledPin, OUTPUT);  //Set pin 3 as 'output' 

  Serial.begin(9600);       //Begin serial communication

}

void loop(){

  

  value = analogRead(sensorPin);       //Read and save analog value from potentiometer

  Serial.println(value);               //Print value

  value = map(value, 0, 1023, 0, 255); //Map value 0-1023 to 0-255 (PWM)

  analogWrite(ledPin, value);          //Send PWM value to led

  delay(100);                          //Small delay

  

}