Arduino codes of the work

int potPin = 2;//connect one leg of the potentiometer to analog pin2
int val = 0;// to store values in the variable "val"

void setup(){
  Serial.begin(9600);
}
void loop(){
  val = analogRead(potPin);// to read the analog value from the potentiometer
  Serial.write(val); // to write the value to the processing
  delay(100);
}