Serial Communication Assignments

This was my hardest project yet. i spent a lot of time with my code and having a bunch of errors that I didn’t understand. after i tried to get some help from the internet i got a bit of a better understanding. what really helped is when I remembered what the professor said about old students records being on the WordPress site. this is my best attempt that kind of worked.

Task 1    

For the first task we were instructed to use a sensor on Arduino to make an ellipse in p5 move horizontally. And to have nothing on Arduino being controlled by p5.

After looking thru projects i decided to use a potentiometer to control the axis of the ellipse.

This was my p5 code.

function setup() {
  createCanvas(640, 480);
  textSize(18);
}

function draw() {
  background(54);
  map(100,0,1023,0,width);
  ellipse(100,height/2,100,37);
  
 

  if (!serialActive) {
    text("Press Space Bar to select Serial Port", 20, 30);
  } else {
    text("Connected", 20, 30);
  }

  
}

function keyPressed() {
  if (key == " ") {
    // important to have in order to start the serial connection!!
    setUpSerial();
  }
}

function readSerial(data) {
  ////////////////////////////////////
  //READ FROM ARDUINO HERE
  ////////////////////////////////////

  if (data != null) {
    ellipseXPos=data;
    }

  
}

My Arduino code:

I used it to just connect the sensor to the p5 sketch

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

void loop() {
  // wait for data from p5 before doing something
 
    
  
      int sensor = analogRead(A0);
      delay(1);
      Serial.println(sensor);
    
  
}

Task 2

For the second task we were initially asked to control the LED brightness. When i first took a stab at it i had no idea how to start. I initially tried to do it with mouse press but after looking at others projects  For inspiration I saw people used diffrent keys to control the brightness so i decided to do the same.

I was initially trying to use the B key for brightness and D for dull. for some reason i got an error. but after i tried the arrow keys like one of my colleges it seemed to work.  This is part of my code

let brightness = 0; 
let value=50;



function setup() {
  createCanvas(600, 600);

 
}

function draw() {
  background(255);
  
  if(value>255){
    value=255;
  }
  if(value<0){
    value=0;
  }
 
  
  brightness = value;

Arduino code:

int LED = 11;
void setup() {
 Serial.begin(9600);
 pinMode(LED, OUTPUT);
 while (Serial.available() <= 0) {
  Serial.println("Wait");  // send a starting message
   delay(300);               // wait 1/3 second
  }
 }
 void loop() {
  // wait for data from p5 before doing something
 while (Serial.available()) {
   int brightness = Serial.parseInt(); 
    if (Serial.read() == '\n') {
     analogWrite(LED, brightness); // turn on LED and adjusts brightness
     Serial.println("LIT"); 
    }
  }
 }

Task 3

This task started off as the easiest one but ended up being the most confusing.  I started of by looking at others projects like i did previously and i saw people using  the gravity wind example  so i took a look at that. I created. a p5 Code and didn’t get an error but when i hooked it up to Arduino it didn’t work.

 if (!serial Active) {
    text("Press Space Bar to select Serial Port", 20, 30);
  } else {
    text("Connected", 20, 30);
  }
  
  
  ellipse(position.x,position.y,mass);
  if (position.y > height-mass/2) {
      velocity.y *= -0.9;  // A little dampening when hitting the bottom
      position.y = height-mass/2;
      LEDbrightness=1;
      
    
    }
  else{
  LEDbrightness=0;
  }
  if(windSpeed<500){
  wind.x =-1;
  }
  else if(windSpeed>600){
    wind.x=1;
  }
  else{
    wind.x=0;
  }
  print(windSpeed);
  
  
}

Arduino

void setup() {
  Serial.begin(9600);
  pinMode(2, OUTPUT);
  // start the handshake
  while (Serial.available() <= 0) {
    Serial.println("0,0"); // send a starting message
    delay(300);            // wait 1/3 second
  }
}

void loop() {
  // wait for data from p5 before doing something
  while (Serial.available()) {
    int LEDstate = Serial.parseInt();
      
    
      digitalWrite(2, LEDstate);
      int sensor=analogRead(A0);
      
      
      Serial.println(sensor);
      
    
  }
}

Conclusion 

Although i spent a bunch of time with this project and it wasn’t perfect in the end I think I learned a lot out of it. This really helped me get coding on another level. Especially when it comes to Interactive Media. It humbled the level that i thought i was at( in a good way)