Recitation 10: Image &Video

In this week’s recitation, I wanted to add a filter to my video and change its speed by using the Potentiometer. The original video is blue and I made it greener.

I attached 3 cables connecting the Arduino and the Potentiometer, one to the A0 on the board, one to 5V, and one to the Ground.
Here is the final coding in Arduino: it will send the signal to Processing and make the circuit work.

#include "SerialRecord.h"

SerialRecord writer(1);

void setup() {
  Serial.begin(9600);
}

void loop() {
  int sensorValue = analogRead(A0);
  writer[0] = sensorValue;
  writer.send();

  // This delay slows down the loop, so that it runs less frequently. This can
  // make it easier to debug the sketch, because new values are printed at a
  // slower rate.
  delay(10);
}
 

The coding in Processing: I should define the variable at the beginning and apply the SerialRecord in the library to connect the program with the Arduino.

import processing.serial.*;
import osteele.processing.SerialRecord.*;
import processing.video.*;
Movie myMovie;

Serial serialPort;
SerialRecord serialRecord;

void setup() {
  fullScreen();
 
  String serialPortName = SerialUtils.findArduinoPort();
  serialPort = new Serial(this, serialPortName, 9600);
  serialRecord = new SerialRecord(this, serialPort, 1);
  myMovie = new Movie(this, "1.mp4");
  myMovie.loop();

}
 
void draw() {
  background(0);

  serialRecord.read();
  int value = serialRecord.get();
  if (myMovie.available()) {
    myMovie.read();
  }
  float a = map(value, 0, 1024, 0, 255);
  float b = map(value, 0, 1024, 0, 255);
  float newSpeed = map(a, 0, width, 0.1, 5);
  myMovie.speed(newSpeed);
  tint(a, b, 0); 
  image(myMovie, 0, 0);

}

Actually, I first used the button and decided to change the filter of the video by pressing the button. But I failed to connect it correctly with the Arduino. I didn’t do anything with the Button and it continuously sends the signal to my Processing. I had no time left, so I changed it into the Potentiometer.
When I switch it, the video will play faster and turn Greener or play slower and turn darker.
Let us see the video: