These are IM Week 12 Assignments by Pi and Darko
Production 1
Make something that uses only one sensor on Arduino and makes the ellipse in p5 move on the horizontal axis, in the middle of the screen, and nothing on arduino is controlled by p5
let rVal = 0;
let alpha = 255;
let left = 0; // True (1) if mouse is being clicked on left side of screen
let right = 0; // True (1) if mouse is being clicked on right side of screen
let xPos = 0; // Position of the ellipse
function setup() {
createCanvas(640, 480);
textSize(18);
noStroke();
}
function draw() {
// one value from Arduino controls the background's red color
background(255, 255, 255);
// Update the position of the ellipse based on the alpha value
// Mapping alpha to the width of the canvas
xPos = map(alpha, 0, 1023, 0, width);
// Draw an ellipse that moves horizontally across the canvas
fill(255, 0, 255, 255); // Same mapping as the text transparency
ellipse(xPos, height / 2, 50, 50); // Position ellipse at center height with a diameter of 50
if (!serialActive) {
text("Press Space Bar to select Serial Port", 20, 30);
} else {
text("Connected", 20, 30);
// Print the current values
text('rVal = ' + str(rVal), 20, 50);
text('alpha = ' + str(alpha), 20, 70);
}
}
function keyPressed() {
if (key == " ") {
// important to have in order to start the serial connection!!
setUpSerial();
}
}
function readSerial(data) {
if (data != null) {
let fromArduino = split(trim(data), ",");
if (fromArduino.length == 2) {
rVal = int(fromArduino[0]);
alpha = int(fromArduino[1]);
}
let sendToArduino = left + "," + right + "\n";
writeSerial(sendToArduino);
}
}
Production 2
Make something that controls the LED brightness from p5
let rVal = 0;
let alpha = 255;
let left = 0; // True (1) if mouse is being clicked on left side of screen
let right = 0; // True (1) if mouse is being clicked on right side of screen
let xPos = 0; // Position of the ellipse
let ledState = false; // To toggle LEDs
function setup() {
createCanvas(640, 480);
textSize(18);
noStroke();
}
function draw() {
// one value from Arduino controls the background's red color
background(255, 255, 255);
// Update the position of the ellipse based on the alpha value
// Mapping alpha to the width of the canvas
xPos = map(alpha, 0, 1023, 0, width);
if (!serialActive) {
text("Press Space Bar to select Serial Port", 20, 30);
} else {
text("Connected", 20, 30);
// Print the current values
text('rVal = ' + str(rVal), 20, 50);
text('alpha = ' + str(alpha), 20, 70);
}
text("Then, press A to flash the police lights.",20, 100)
//Edit the code below
// Toggle LED state every frame if space is held down
if (keyIsDown(65)) { // 32 is the ASCII code for space
ledState = !ledState;
if (ledState) {
left = 1;
right = 0;
} else {
left = 0;
right = 1;
}
}
// Edit the code above
}
function keyPressed() {
if (key == " ") {
// important to have in order to start the serial connection!!
setUpSerial();
}
}
function keyReleased(){
if (key == "a") {
left = 0;
right = 0;
}
}
function readSerial(data) {
if (data != null) {
let fromArduino = split(trim(data), ",");
if (fromArduino.length == 2) {
rVal = int(fromArduino[0]);
alpha = int(fromArduino[1]);
}
let sendToArduino = left + "," + right + "\n";
writeSerial(sendToArduino);
}
}
Gravity Wind
Take the gravity wind example (https://editor.p5js.org/aaronsherwood/sketches/I7iQrNCul) and make it so every time the ball bounces one led lights up and then turns off, and you can control the wind from one analog sensor
let velocity;
let gravity;
let position;
let acceleration;
let wind;
let drag = 0.99;
let mass = 50;
let rVal = 0;
let alpha = 255;
let left = 0; // True (1) if mouse is being clicked on left side of screen
let right = 0; // True (1) if mouse is being clicked on right side of screen
let serialSetup = false;
// Declare a variable to store the time at which to trigger the action
let triggerTime = 0;
function setup() {
createCanvas(640, 360);
noFill();
position = createVector(width / 2, 0);
velocity = createVector(0, 0);
acceleration = createVector(0, 0);
gravity = createVector(0, 0.5 * mass);
wind = createVector(0, 0);
// Set the trigger time to be 5 seconds after setup runs
triggerTime = millis() + 5000;
textSize(20);
}
function draw() {
// Check if the current time has passed the trigger time
if (millis() >= triggerTime && !serialSetup) {
serialSetup = true;
}
push();
fill(0);
if (!serialSetup) {
text("Simulation starts in 5 seconds. Press a to set up serial.", 20, 50);
}
pop();
if (serialSetup) {
background(255);
let windtext = "";
if (alpha < 300) {
wind.x = -1;
windtext = "Wind : Right";
} else if (alpha > 800) {
wind.x = 1;
windtext = "Wind : Left";
} else {
wind.x = 0;
windtext = "No wind.";
}
push();
fill(0);
text(windtext, 20, 50);
pop();
applyForce(wind);
applyForce(gravity);
velocity.add(acceleration);
velocity.mult(drag);
position.add(velocity);
acceleration.mult(0);
ellipse(position.x, position.y, mass, mass);
if (position.y > height - mass / 2) {
velocity.y *= -0.9; // A little dampening when hitting the bottom
position.y = height - mass / 2;
console.log(
"Bounce! Position Y: " + position.y + ", Velocity Y: " + velocity.y
);
left = 1;
} else {
left = 0;
}
}
}
function applyForce(force) {
// Newton's 2nd law: F = M * A
// or A = F / M
let f = p5.Vector.div(force, mass);
acceleration.add(f);
}
function keyPressed() {
if (keyCode == LEFT_ARROW) {
wind.x = -1;
}
if (keyCode == RIGHT_ARROW) {
wind.x = 1;
}
if (key == " ") {
mass = random(15, 80);
position.y = -mass;
velocity.mult(0);
}
if (key == "a") {
// important to have in order to start the serial connection!!
setUpSerial();
}
}
// This function will be called by the web-serial library
// with each new *line* of data. The serial library reads
// the data until the newline and then gives it to us through
// this callback function
function readSerial(data) {
////////////////////////////////////
//READ FROM ARDUINO HERE
////////////////////////////////////
if (data != null) {
// make sure there is actually a message
// split the message
let fromArduino = split(trim(data), ",");
// if the right length, then proceed
if (fromArduino.length == 2) {
// only store values here
// do everything with those values in the main draw loop
// We take the string we get from Arduino and explicitly
// convert it to a number by using int()
// e.g. "103" becomes 103
rVal = int(fromArduino[0]);
alpha = int(fromArduino[1]);
}
//////////////////////////////////
//SEND TO ARDUINO HERE (handshake)
//////////////////////////////////
let sendToArduino = left + "," + right + "\n";
writeSerial(sendToArduino);
}
}