Category: Assignments

Assignment 2

It’s running smoothly, so here it is.

I wanted to make a ghost chat which would allow the user to interact with “ghosts” that I programmed to be “detected” by a photosensor. By pushing the button, the user can ask questions and get an answer. I also initially wanted to program a theme song for each ghost that could run in the background or when someone asks for the ghosts’ favorite song, but that took a backseat when I realized how confused I actually was by interrupts. If I were to really make this perfect, I’d probably find a different sensor, and figure out a way to have the ghost answer questions that the user defines, as opposed to pre-programmed answers to pre-programmed questions.

ghost_chat_a2

Assignment 3

It’s still not working, but this is what I have.

I decided to integrate mouse clicking into my assignment 2 ghost chat, and bring the push-button interrupt into the p5js part of the equation, as opposed to leaving it with the arduino. This means that the user should be able to click around on the screen to ask questions. My issue could be that my code is wonky, because I haven’t yet been able to make p5js actually take information from the arduino and print it successfully using my own sketch, or it could be technical:

I thought the problem had solved itself, but it seems that the Beats have spawned more beats, and p5.serialcontrol likes to open that port instead of the usbmodem even after I’ve closed the weird beats port and opened the other one instead. Sometimes it stays with the usb modem for a few minutes, and I can run a few sketches, and sometimes it doesn’t feel the need to do anything I ask, and I wrestle with it for an hour or two.

So here are my sketches:

ghost_chat_p5js 2

and the fritzing:

Virtural “Etch a Sketch”

For this assignment, I used two potentiometers to simulate the “Etch A Sketch” (Wikipedia_”Etch A Sketch”). Using two potentiometer, one controls left and right movement, and the other controls the up and down movement, the browser window is going to serve as a canvas for the “Etch A Sketch” board.

 

  • Parts list:
    • Potentiometer (10K)  x2
    • Adafruit M0 Metro Express
    • Bunch of jumper wires

 

 

Fritzing Sketch:

 

Code (Arduino Part):

const int leftRightPot = A4; //with green LED
const int upDownPot = A5; // with blue LED

const int tol = 100;

int leftRightVal = 0;
int upDownVal = 0;

int valHi = 1024;
int valLo = 0;


//******************************
//Setup for Arduino to run
void setup() {
 // put your setup code here, to run once:
 pinMode(leftRightPot , INPUT);
 pinMode(upDownPot, OUTPUT);

Serial.begin(9600);
}


//******************************
//The operating loop
void loop() {
 // put your main code here, to run repeatedly:
 leftRightVal = reMapped(analogRead(leftRightPot));
 upDownVal = reMapped(analogRead(upDownPot));

// Serial.print("leftRightVal = ");
 // Serial.println(leftRightVal);

//Modified from class Note 5
 Serial.print("leftRightVal,");
 Serial.print(leftRightVal);
 Serial.print(",upDownVal,");
 Serial.println(upDownVal);
}


//***********************************
//function used to remap input value into one
int reMapped(int input){
 int output = map(input,0,1023,0,255);
 return output;
}

 

Code (js part):

var cnv;
var serial;
var portName = 'COM4';
var dataRead;
 //@TODO : find out what port name it is

//***************
//Here are some global variables:
//@TODO: Figure out how to make them function in OOP
var curPosX = 0;
var curPosY = 0;
var leftRightVal = 255/2;
var upDownVal = 255/2;

const rightUpThresh = 150;
const leftDownThresh = 100;

var xPoint=[];
var yPoint=[];

// ****************
//Basic setup for serial port and canvas
//******************
function setup(){
 
 serial = new p5.SerialPort();
 // now set a number of callback functions for SerialPort
 serial.on('list', printList);
 serial.on('connected', serverConnected);
 serial.on('open', portOpen);
 serial.on('data', serialEvent);
 serial.on('error', serialError);
 serial.on('close', portClose);

serial.list();
 serial.open(portName);

//Here is canvas setup
 createCanvas(windowWidth, windowHeight);

var x = (windowWidth - width)/2;
 var y = (windowHeight - height)/2 ;
 cnv.position(x,y);


 background ("white");
}



//**********************
//Put drawing functions in here
function draw() {
 // put drawing code here
 mouseSetPt();
 drawWithPot();
 drawPts();
 
}


//**************************
//click mouse and reset the drawing point
function mouseSetPt(){
 //get the point where the mouse clicks
 var mouseClickX = mouseX;
 var mouseClickY = mouseY;

//update the point in the array
 xPoint = xPoint + [mouseClickX];
 yPoint = yPoint + [mouseClickY];

//update the current/new position to start
 curPosX = xPoint[xPoint.length-1];
 curPosY = yPoint[yPoint.length-1];

}


//****************************
//use potentiometer to draw (only moving left/right and up/down)
function drawWithPot(){
//@TODO: find a better way to store tese values, like tuples?

//check right and left
 if (leftRightVal >= rightUpThresh){
 curPosX = curPosX + 1;
 }
 else if (leftRightVal <= leftDownThresh){
 curPosX = curPosX - 1;
 }

//check up and down
 if (upDownVal >= rightUpThresh){
 curPosY = curPosY + 1;
 }
 else if (upDownVal <= leftDownThresh){
 curPosY = curPosY - 1;
 }

//update the position list
 var prePosX = xPoint[xPoint.length-1];
 var prePosY = yPoint[yPoint.length-1];

if (curPosX != prePosX || curPosY != prePosY){
 xPoint = xPoint + [curPosX]
 yPoint = yPoint + [curPosY]
 }

}

//************************
//Draw all the points that is saved in the array
function drawPts(){
 for ( i = 0; i < xPoint.length ; i++){
 var xPointPos = xPoint[i];
 var yPointPos = yPoint[i];
 point(xPointPos, yPointPos);
 }
}

//*****************************
//All server related
function printList(portList) {
 // for (var i = 0; i < portList.length; i++) {
 // print(i + " " + portList[i]);
 // }
}

function serverConnected()
{
 print('serverConnected');
}

function portOpen()
{
 print('portOpen');
}

function serialEvent(){

var strRead = serial.readStringUnil('\r\n');

if (strRead.length > 0 ) {
 var potStr = split(strRead, ',');

if (potStr.length == 4) { // ignore any tiny strings
 leftRightVal = potStr[1];
 upDownVal = potStr[3];
 }
 }

}


function serialError(err)
{
 print('serialError ' + err);
}

function portClose()
{
 print('portClose');
}

 

Zip -Etch A Sketch

Assignment Three

Hot/Cold Game with a p5 twist

For this assignment I moved the switch button functionality for state changes to the p5 sketch. Through the web browser you can change the state from start screen to play mode and back again. The Arduino sets the target value and then sends five states back to p5 in order to determine how close the player is to the target. The status of the player, hot/cold/warmer/colder/winner, is then displayed on screen instead of the LED in the previous version.

password: MakingThingsInteractive

Arduino Code:
//--------NEOPIXEL SETUP --------
#include
#ifdef __AVR__
#include <avr/power.h>
#endif
static const int PIN = 40;
static const int NUMPIXELS = 1;
Adafruit_NeoPixel pixels = Adafruit_NeoPixel(NUMPIXELS, PIN, NEO_GRBW + NEO_KHZ800);

//--------ULTRASONIC PINS N'AT--------
static const int trigPin = A0;
static const int echoPin = A1;
long duration;
int distance;

//--------INCOMING CASE STATE--------
int caseState;

//--------OUTGOING CASE STATE--------
static const int neutralState = 0;
static const int winState = 1;
static const int hotState = 2;
static const int warmerState = 3;
static const int colderState = 4;
static const int iceState = 5;
int sendState = neutralState; // current state of the button

//--------TIME--------
unsigned long lastSampleTime = 0;
unsigned long sampleInterval = 30000; // in ms

unsigned long lastSampleTime2 = 0;
unsigned long sampleInterval2 = 250; // in ms

int target;

void setup() {
// put your setup code here, to run once:
Serial.begin(115200);

pinMode(trigPin, OUTPUT);
pinMode(echoPin, INPUT);

randomSeed(analogRead(2));
pixels.begin();

}

void loop() {
unsigned long now = millis();
unsigned long now2 = millis();

if (Serial.available() > 0) {
caseState = Serial.read();
}

switch (caseState) {
case 0:
pixelBlinkGreen();
if (lastSampleTime + sampleInterval < now) {
lastSampleTime = now;
target = random(10, 150);
// pixelOff();
// Serial.print("Target Set");
}
break;
case 1:
pixelBLUE();
if (lastSampleTime2 + sampleInterval2 < now2) {
lastSampleTime2 = now2;
Serial.write(target);
// Serial.print("T,");
// Serial.println(target);
}

// Serial.print("Find ");
// Serial.println(target);
hotCold(target);
break;
default:
pixelBlinkYellow();
// Serial.println("Push Button For New Game");
// statements
}
}

void hotCold(int x) {
digitalWrite(trigPin, LOW);
delayMicroseconds(2);
digitalWrite(trigPin, HIGH);
delayMicroseconds(10);
digitalWrite(trigPin, LOW);

duration = pulseIn(echoPin, HIGH);
distance = duration / 10 / 2 ;

unsigned long now2 = millis();
if (lastSampleTime2 + sampleInterval2 < now2) {
lastSampleTime2 = now2;
pixelOff();
if ((distance <= (x + 5)) && (distance >= (x - 5))) {
pixelState1();
sendState = winState;
// Serial.write("ON FIRE!");
} else if ((distance <= (x + 15)) && (distance >= (x - 15))) {
pixelState2();
sendState = hotState;
// Serial.println("Things are heating up");
} else if ((distance <= (x + 25)) && (distance >= (x - 25))) {
pixelState3();
sendState = warmerState;
// Serial.println("Warmer..."); // instead of print line, then you can do score value
} else if ((distance <= (x + 35)) && (distance >= (x - 35))) {
pixelState4();
sendState = colderState;
// Serial.println("Cooler...");

} else if ((distance <= (x + 45)) && (distance >= (x - 45))) {
pixelState5();
sendState = iceState;
// Serial.println("Pretty Cold");

} else {
pixelOff();
//Serial.println("Something is wrong");
}
Serial.write (sendState);
}
}

void pixelChange (int y) {

}

void pixelBlinkGreen() {
pixels.setPixelColor(0, pixels.Color(0, 255, 0));
pixels.show(); // This sends the updated pixel color to the hardware.
delay(500);
pixels.setPixelColor(0, pixels.Color(0, 0, 0));
pixels.show(); // This sends the updated pixel color to the hardware.
delay(500);
}

void pixelBlinkYellow() {
pixels.setPixelColor(0, pixels.Color(255, 200, 0, 75));
pixels.show(); // This sends the updated pixel color to the hardware.
delay(250);
pixels.setPixelColor(0, pixels.Color(0, 0, 0));
pixels.show(); // This sends the updated pixel color to the hardware.
delay(250);
}

void pixelState1() {
pixels.setPixelColor(0, pixels.Color(255, 0, 100));
pixels.show(); // This sends the updated pixel color to the hardware.
}

void pixelState2() {
pixels.setPixelColor(0, pixels.Color(215, 13, 138));
pixels.show(); // This sends the updated pixel color to the hardware.
}

void pixelState3() {
pixels.setPixelColor(0, pixels.Color(150, 55, 150));
pixels.show(); // This sends the updated pixel color to the hardware.
}

void pixelState4() {
pixels.setPixelColor(0, pixels.Color(138, 70, 215));
pixels.show(); // This sends the updated pixel color to the hardware.
}

void pixelState5() {
pixels.setPixelColor(0, pixels.Color(100, 0, 255));
pixels.show(); // This sends the updated pixel color to the hardware.
}

void pixelBLUE() {
pixels.setPixelColor(0, pixels.Color(0, 0, 255));
pixels.show(); // This sends the updated pixel color to the hardware.
}

void pixelOff() {
pixels.setPixelColor(0, pixels.Color(0, 0, 0));
pixels.show(); // This sends the updated pixel color to the hardware.
}
p5 Code:
var serial;
var portName = '/dev/cu.usbmodem1411';

var button;
var count = 0;
var buttonCount;
var findState;
var targetSet;

var target;

var time1 = 30000;
var time2 = 20;

var noiseScale = 0.01;

var caseState;
var lineMap;
var redVal;
var blueVal;

var testRect;
var ranVal;

var lastSampleTime = 0;
var sampleInterval = 250; // in ms

function setup() {
serial = new p5.SerialPort();
// now set a number of callback functions for SerialPort
serial.on('list', printList);
serial.on('connected', serverConnected);
serial.on('open', portOpen);
serial.on('data', serialEvent);
serial.on('error', serialError);
serial.on('close', portClose);

serial.list();
serial.open(portName);

colorMode(RGB);
createCanvas(windowWidth, windowHeight);

testRect = new Rectangle();
}

function draw() {
background(255); // set the background to white
startScreen();

ranVal = random(0,150);

}

function startScreen(){
fill(0); // fill with black
textSize(32);
textStyle(BOLD);
textAlign(LEFT);
text("The Hot/Cold Game", 75, 100);

startButton();

if (count % 2 == 1){
playScreen();
}

}

function playScreen (){
var startX = windowWidth -200;
var startY = 75;
var endX = windowWidth -200;
var endY = windowHeight - 75;
var topWall = startY+5;
var bottomWall = endY-5;

var xc = constrain(ranVal, topWall, bottomWall);
var lineLength = endY - startY;
// console.log("line length: " + lineLength);

// var mapVal = map(xc, topWall, bottomWall, 0, 150);
// lineMap = int(mapVal);

background(255);
fill(0); // fill with black
textSize(32);
textStyle(BOLD);
textAlign(LEFT);
text("The Hot/Cold Game", 75, 100);

if (target > 6 && target < 150) {
fill(0);
textSize(20);
textStyle(NORMAL);
textAlign(LEFT);
text("Target Set", 400, 100);
}

/*
stroke(0);
strokeWeight(2);
line (startX, startY, endX, endY);
line (startX - 10, startY, startX+10, startY);
line (endX - 10, endY, endX+10, endY);

ellipse(startX, xc, 10, 10);
// text ("map val " + mapVal, startX+75, xc);
*/

rectColor();
hotColdLevel();
// winnerWinner();
backButton();

if (count % 2 == 0){
startScreen();
}
}

function rectColor() {

var from = color(255, 0, 100);
var to = color(100, 0, 255);
var interA = lerpColor(from, to, 0.25);
var interB = lerpColor(from, to, 0.5);
var interC = lerpColor(from, to, 0.75);

var textX = windowWidth - 230;
var textY = windowHeight - 60;

// testRect.display();

noStroke();
textSize(24);
textStyle(NORMAL);
textAlign(CENTER);

if (findState == 1) {
fill(from);
testRect.display();
fill(255);
text("WINNER", textX, textY);
} else if (findState == 2) {
fill(interA);
testRect.display();
fill(255);
text("hot", textX, textY);
} else if (findState == 3) {
fill(interB);
testRect.display();
fill(255);
text("warmer", textX, textY);
} else if (findState == 4) {
fill(interC);
testRect.display();
fill(255);
text("colder", textX, textY);
} else if (findState == 5) {
fill(to);
testRect.display();
fill(255);
text("ice cold", textX, textY);
}
}

function hotColdLevel() {
// var printTarget = int(targetSet);
// console.log(printTarget);
var startX = windowWidth -200;
var startY = 100;
var endX = windowWidth; -150
var endY = windowHeight - 140;
var topWall = startY+5;
var bottomWall = endY-5;
var lineLength = endY - startY;

for (var x = 0; x < windowWidth; x++) {

var noiseVal = noise((ranVal + x) * noiseScale, mouseY * noiseScale);

var alpha1 = noiseVal * 255 + 50;
var from = color(255, 0, 100, alpha1);
var to = color(100, 0, 255, alpha1);
var interA = lerpColor(from, to, 0.25, alpha1);
var interB = lerpColor(from, to, 0.5, alpha1);
var interC = lerpColor(from, to, 0.75, alpha1);

var xc;

var increase1 = startY +100;
var increase2 = startY +200;
var increase3 = startY +300;

if (findState == 1) {
stroke(from);
xc = constrain(startY, topWall, bottomWall);
} else if (findState == 2) {
stroke(interA);
xc = constrain(increase1, topWall, bottomWall);
} else if (findState == 3) {
stroke(interB);
xc = constrain(increase2, topWall, bottomWall);
} else if (findState == 4) {
stroke(interC);
xc = constrain(increase3, topWall, bottomWall);
} else if (findState == 5) {
stroke(to);
xc = constrain(endY - 100, topWall, bottomWall);
}

// stroke(colorVal, 0, 100, alpha1);
line(x, xc + noiseVal * 30, x, endY);
// line(x, xc + noiseVal * 30, x, endY);

}
}

function winnerWinner(){

if (mouseY <= (target+5) && mouseY >= (target-5)){
background (255);
fill(0); // fill with black
textSize(32);
textStyle(BOLD);
textAlign(LEFT);
text("The Hot/Cold Game", 75, 100);
fill(0); // fill with black
textSize(60);
textStyle(BOLD);
textAlign(CENTER);
text("Winner Winner!", windowWidth*.5, windowHeight*.5);

}

}

function Rectangle() {
this.x = windowWidth-380;
this.y = windowHeight - 90;
this.width = 300;
this.height = 40;
this.corner = 3;

this.display = function() {
rect(this.x, this.y, this.width, this.height, this.corner);
// stroke(0);
// line(75,100, windowWidth-75, 100);
}
}

function startButton(){

var x = 80;
var y = 125;
var buttonWidth = 200;
var buttonHeight = 40;

var startY = 100;
var endY = windowHeight - 200;

fill(255, 0, 110);
rect(x, y, buttonWidth, buttonHeight,2);

fill(255);
noStroke();
textSize(24);
textStyle(NORMAL);
textAlign(CENTER);
text("Start Game", x + 100 , y + 30);

// if (mouseIsPressed){
// caseState = 1;
// serial.write(caseState);
// console.log(caseState);
// }

/*
if (count % 3 == 1){
noStroke();
fill(255, 0, 89);
} else if (count % 3 == 2){
noStroke();
fill(177);
} else {
noStroke();
fill(255);
}
ellipse (windowWidth*.5, windowHeight*.5, 100,100);
*/

}

function backButton(){
var x = 80;
var y = windowHeight - 90;
var buttonWidth = 200;
var buttonHeight = 40;

var startY = 100;
var endY = windowHeight - 200;

fill(225);
noStroke();
rect(x, y, buttonWidth, buttonHeight,3);

fill(0);
noStroke();
textSize(24);
textStyle(NORMAL);
textAlign(CENTER);
text("Back", x + 100 , y + 30);
//
// if (mouseIsPressed){
// target = int(random(startY,endY));
// }

}

function mousePressed(){
var backHeight = windowHeight - 60
var r1 = dist(mouseX, mouseY, 180, 155);
var r2 = dist(mouseX, mouseY, 180, backHeight - 30);
if (r1 < 100){
button = 1;
caseState = 1;
console.log("start button pressed");
count ++;
} else if(r2 <100){
button = 2;
caseState = 0;
console.log("back button pressed")
count ++;
}else {
button = 0;
console.log("button NOT pressed");
}
serial.write(caseState);
}

//-----SERIAL FUNCTIONS-----

function printList(portList) {
for (var i = 0; i < portList.length; i++) {
print(i + " " + portList[i]);
}
}

function serverConnected() {
print('serverConnected');
}

function portOpen() {
print('portOpen');
}

function serialEvent() {
// TODO now here's a problem. What if we want to read both
// the blueLed and redLed values? All we know in p5.js is
// that there is same data to be read, we don't have a context
// for this value
//
// this is where a state machine represented by an integer is
// valuable, we just just pass the state up as an int then
// p5.js can switch/caes that integer

// distanceRead = Number(serial.read());
// button = Number(serial.read());

// var inByte = serial.read();
// inData = inByte;
//

var incoming = serial.read();
if (incoming > 6){
targetSet = incoming;
} else if (incoming < 6){
findState = incoming;
}

/*
// now we're reading a string
// TODO how does a string end?
var stringRead = serial.readStringUntil('\r\n');

// TODO now we're off in object oriented programming
// what type is stringRead? Note we didn't define it
if (stringRead.length > 0 ) {
var potString = split(stringRead, ',');

// potString[0] B
// potString[1] 159
// potString[2] R
// potString[3] 60

if (potString.length == 2) { // ignore any tiny strings
targetSet = potString[1];
}
}
*/

}

function serialError(err) {
print('serialError ' + err);
}

function portClose() {
print('portClose');
}

Arduino + p5js + Fritzing files

A3: Serial Port in P5

Assignment 2: LED Color Picker

The code is same as A2 but the debugging code is modified to send RGB data through the serial port, I use this information to change the color of the ellipse and show debug information on the browser.

A3 Code and JS

Reflection: Can use the joystick movement to make an interactive widget.

References: https://github.com/vanevery/p5.serialport/tree/master/examples

Assignment 3: p5.js + Arduino

Assignment 3

Due 23:59, 5 Feb, please post a .zip folder with your p5.js folder, Arduino sketch, and Fritzing sketch.  If you can post video, great.

Tie your previous project (or a new one if you like) to a p5.js client: display the state of your client and any relevant sensor data in p5.js.   Use graphics, animation, sound, or any other p5.js feature you think is the best element for displaying this data.

Assignment 2

This project is supposed to be an embodiment of Steve Reich’s Clapping Music. The code for this project has two versions. The first version works unreliably because it uses the delay function to time the LEDs. The second uses a helper function to time and illuminate the LEDs using millis(). This program does not even finish compiling though. It probably just needs debugging, but I am not sure. With the original program, the interrupt does not reliably switch the case. To continue this project, I will use solenoids to make a percussive sound.

 

vandezandeStateMachineInterrupt

 

Assignment 2: LED Color Picker

The circuit shown above is a 3 pin led connected to a joystick. It uses the JoyStick movement to change the RGB values and the button press in the joystick is used to switch between states. The system has 5 states

  1. All off
  2.  Red constant, change G and B by moving the joystick
  3.  Green constant, change R and G by moving the joystick
  4. Blue constant, change others through joystick
  5. All on.

Reflection:  if I were to redo this, I would transfer the states from 2, 3 and 4 making it a real color picker, and I also think the joystick button may not be ideal for an interrupt.

Code and Files: A2