Noah Read - Physical Computing

Session I

In the first week of Physical Computing, we looked at the basics of the Arduino and the Grove Kit to program simply instructions, like with the built-in LED, and then an external one wired in to the breadboard. A big benefit is that th Arduino doesn’t need to be plugged in to computer once the code has been put on to it, so more useful than the Makey-Makey. We then used the LCD screen to display text.

Grove - Starter Kit v3 [link]

Sensors Overview

Bread board

Power rails work up-down.

Lettered connections work left-right.

Tutorial codes:

/*

Blink

Turns an LED on for one second, then off for one second, repeatedly.

Most Arduinos have an on-board LED you can control. On the UNO, MEGA and ZERO

it is attached to digital pin 13, on MKR1000 on pin 6. LED_BUILTIN is set to

the correct LED pin independent of which board is used.

If you want to know what pin the on-board LED is connected to on your Arduino

model, check the Technical Specs of your board at:

https://www.arduino.cc/en/Main/Products

modified 8 May 2014

by Scott Fitzgerald

modified 2 Sep 2016

by Arturo Guadalupi

modified 8 Sep 2016

by Colby Newman

This example code is in the public domain.

https://www.arduino.cc/en/Tutorial/BuiltInExamples/Blink

*/

// the setup function runs once when you press reset or power the board

void setup() {

// initialize digital pin LED_BUILTIN as an output.

pinMode(LED_BUILTIN, OUTPUT);

}

// the loop function runs over and over again forever

void loop() {

digitalWrite(LED_BUILTIN, HIGH); // turn the LED on (HIGH is the voltage level)

delay(1000); // wait for a second

digitalWrite(LED_BUILTIN, LOW); // turn the LED off by making the voltage LOW

delay(1000); // wait for a second

}

//Hello world!!

#include <Wire.h> // I2C library for LCD

#include <rgb_lcd.h> // Grove LCD library

const int pinButton = 3; // Pin for the button

const int pinLed = 7; // Pin for the LED

rgb_lcd lcd; // Create an LCD object

void setup()

{

pinMode(pinButton, INPUT); // Set button pin as input

pinMode(pinLed, OUTPUT); // Set LED pin as output

lcd.begin(16, 2); // Initialize LCD with 16 columns and 2 rows

lcd.setRGB(0, 255, 0); // Set LCD backlight color to green

lcd.print("Press Button!"); // Display message on LCD

}

void loop()

{

// Check if the button is pressed

if(digitalRead(pinButton))

{

// When button is pressed, light up LED

digitalWrite(pinLed, HIGH);

// Update the LCD to display "Hello World!"

lcd.clear();

lcd.setCursor(0, 0); // Move cursor to the top left

lcd.print("hello world!"); // Display "Hello World!"

}

else

{

// Turn off the LED when the button is not pressed

digitalWrite(pinLed, LOW);

// Update the LCD to display "Press Button!"

lcd.clear();

lcd.setCursor(0, 0); // Move cursor to the top left

lcd.print("Press Button!"); // Display "Press Button!"

}

delay(10); // Short delay to avoid excessive polling

}

Session II

This week we tried our own programming more, with the components from the Arduino Grove Starter Kit. This was one of the ones I did:

Siren with surprise text:

#include <Wire.h>

#include "rgb_lcd.h"

rgb_lcd lcd;

// const int colorR = 0;

// const int colorG = 0;

// const int colorB = 255;

void setup()

{

// set up the LCD's number of columns and rows:

lcd.begin(16, 2);

// Print a message to the LCD.

lcd.print("");

delay(1000);

}

void loop()

{

// set the cursor to column 0, line 1

// (note: line 1 is the second row, since counting begins with 0):

lcd.setCursor(0, 1);