Category: Final Project

By Mallika Rao & Josh Kotel

For our final design, we were between several ideas. Our pomodoro timer was the frontrunner but we became apprehensive about the lack of time and level of design we wanted to achieve.

We also strongly felt we wanted to design devices that worked as a set–either for communication or otherwise–but offered a shared experience.

This bookmark is designed to make reading an immersive, multisensory experience. Upon opening your book, this bookmark turns into a reading light, automatically illuminating to light up your page. A customizable scent profile enhances the moment. Close the book, and the light turns off while the system enters low-power sleep mode to save battery.

If you’d like to take on an additional challenge, this bookmark has the potential to take on IoT features. Built on the Arduino Nano ESP32 with WiFi capabilities, you can program it to automatically start your favorite reading playlist on Spotify when you open your book, and even enable Do Not Disturb mode on your phone. It allows you to create a distraction-free reading environment and truly get lost in your latest literary escape.

Instructables Link

I wanted my inner thoughts mirror to really go against what we see nowadays. We are being pushed happiness and optimism so much. In the spirit of being a realist, I wanted to create something that reflected one’s actual inner thoughts back to them. In a way, I sometimes think taking optimism too far can skew one’s vision. I wanted to create something real – that perhaps adds a bit of a shock factor. When our thoughts are actually materialized and put in front of us, will we start being more aware and perhaps start reframing?

Tools

1. Soldering iron
2. Solder wire
3. Wire cutters / strippers
4. Hot glue gun
5. Scissors
6. Black tape(will become your best friend! I used an electrical one)

MATERIALS / COMPONENTS

1. Arduino Nano ESP32
2. 2.4″ OLED screen(I used an affordable one from Amazon, I would suggest looking one up on Adafruit for better quality and reliability)
3. Wires
4. Solderable breadboard
5. USB-C cable (to program the ESP32)
6. 6×6 inch two – way see through mirror
7. 6 x 6 inch Shadow box frame
8. Cardboard/ Old box

Everyone has someone they miss. Maybe it’s distance, maybe it’s conflicting schedules, but seeing loved ones in adulthood is hard. If you miss someone and want to get love and spread some love, here’s how! Instructables Link

SHOPPING LIST

To make this project, you will need 2x of each:

Electronics:

1. Adafruit MPRLS Ported Pressure Sensor Breakout – 0 to 25 PSI
2. Adafruit ESP32-S3 Reverse TFT Feather – 4MB Flash, 2MB PSRAM, STEMMA QT
3. Lithium Ion Polymer Battery – 3.7v 2500mAh
4. Silicone Tubing for Peristaltic Liquid Pump – 1 Meter

Fabric:

1. Line Texture Fabric
2. FUZZY Fluffy sweater

Plus these tools:

• Soldering tools and supplies
• Silicone adhesive
• Hot glue gun with glue sticks

Circuit Diagram

The Adafruit MPRLS Ported Pressure Sensor Breakout and Li-ion battery are attached to the Adafruit ESP32-S3 Reverse TFT Feather.

Attach Tubing to Sensor

Make sure to use a silicone adhesive when attaching the tube to your sensor, because the only thing that makes silicone stick is silicone. 

I personally had a lot of trouble with this one. The first one attached like bread to butter, perfection! The second tube on the other hand….. Messy.

Connect to Arduino IoT Cloud

In order to connect my board, I created a boolean variable for my Thing through the Arduino IoT Cloud. By inputting my network and device information within the code, I was able to connect.

Patterns & Sewing

For the patterns, I was originally going to make a stingray and an octopus, but due to time constraints, I am going with my mom’s favorite shape, a triangle!

Genuinely making the pattern to sew for this was pretty intuitive. I just cut out two large triangle pieces then cut out the strips that go in between the two triangles to create volume.

Hug Code

// Long Distance Hug by Ana Jay, code from Parihug IoT Hug project by Xyla Foxlin, adapted 2023 & 2024 by Becky Stern

// Watch the video: https://youtu.be/u6gj8VzrHBo

// Tutorial: https://beckystern.com/2023/11/27/hug-sensing-iot-parihug-toy-w-xyla-foxlin/

// This code is in the Public Domain

#define SECRET_SSID "Internet of Things Class"

#define SECRET_OPTIONAL_PASS "iheartarduino"

#define SECRET_DEVICE_KEY "gg0N8MV!wlYjIqlA8m#Db@yW@"

#include <ArduinoIoTCloud.h>

#include <Arduino_ConnectionHandler.h>

#include <Adafruit_GFX.h>    // Core graphics library

#include <Adafruit_ST7789.h> // Hardware-specific library for ST7789

#include <SPI.h>

// Use dedicated hardware SPI pins

Adafruit_ST7789 tft = Adafruit_ST7789(TFT_CS, TFT_DC, TFT_RST);

const char DEVICE_LOGIN_NAME[]  = "15f3eccb-0c6f-46a8-8ef1-183a610a3a3c";

const char SSID[]               = SECRET_SSID;    // Network SSID (name)

const char PASS[]               = SECRET_OPTIONAL_PASS;    // Network password (use for WPA, or use as key for WEP)

const char DEVICE_KEY[]  = SECRET_DEVICE_KEY;    // Secret device password

void onHugChange();

bool hug;

void initProperties(){

 ArduinoCloud.setBoardId(DEVICE_LOGIN_NAME);

 ArduinoCloud.setSecretDeviceKey(DEVICE_KEY);

 ArduinoCloud.addProperty(hug, READWRITE, ON_CHANGE, onHugChange);

}

WiFiConnectionHandler ArduinoIoTPreferredConnection(SSID, PASS);

#include <Wire.h>

#include "Adafruit_MPRLS.h"

// You dont *need* a reset and EOC pin for most uses, so we set to -1 and don't connect

#define RESET_PIN  -1  // set to any GPIO pin # to hard-reset on begin()

#define EOC_PIN    -1  // set to any GPIO pin to read end-of-conversion by pin

Adafruit_MPRLS mpr = Adafruit_MPRLS(RESET_PIN, EOC_PIN);

void setup() {

 // Initialize serial and wait for port to open:

 Serial.begin(9600);

 //pinMode(12, OUTPUT);

 // This delay gives the chance to wait for a Serial Monitor without blocking if none is found

 delay(1500);

 // Defined in thingProperties.h

 initProperties();

 // Connect to Arduino IoT Cloud

 ArduinoCloud.begin(ArduinoIoTPreferredConnection);

 /*

    The following function allows you to obtain more information

    related to the state of network and IoT Cloud connection and errors

    the higher number the more granular information you’ll get.

    The default is 0 (only errors).

    Maximum is 4

 */

 setDebugMessageLevel(2);

 ArduinoCloud.printDebugInfo();

  Serial.println("Testing MPRLS sensor...");

 if (! mpr.begin()) {

   Serial.println("Failed to communicate with MPRLS sensor, check wiring?");

   while (1) {

     delay(10);

   }

 }

 Serial.println("Found MPRLS sensor");

 // turn on backlite

 pinMode(TFT_BACKLITE, OUTPUT);

 digitalWrite(TFT_BACKLITE, HIGH);

 // turn on the TFT / I2C power supply

 pinMode(TFT_I2C_POWER, OUTPUT);

 digitalWrite(TFT_I2C_POWER, HIGH);

 delay(10);

 // initialize TFT

 tft.init(135, 240); // Init ST7789 240x135

 tft.setRotation(3);

 tft.fillScreen(ST77XX_BLACK);

// large block of text

 tft.fillScreen(ST77XX_BLACK);

 testdrawtext(

     "Booting hugs... ",

     ST77XX_WHITE);

 delay(1000);

tft.fillScreen(ST77XX_BLACK);

 Serial.println(F("Initialized"));

}

void loop() {

 ArduinoCloud.update();

  float pressure_hPa = mpr.readPressure();

 Serial.print("Pressure (hPa): "); Serial.println(pressure_hPa);

 Serial.print("Pressure (PSI): "); Serial.println(pressure_hPa / 68.947572932);

   if (pressure_hPa > 1100){

   hug=true;

   Serial.println("Hug = true");

 //    Serial.println("buzz buzz loop");

 //  digitalWrite(12, HIGH);

 //  delay(1000);

 //  digitalWrite(12, LOW);

 // large block of text

 tft.fillScreen(ST77XX_BLACK);

 testdrawtext(

     "Hugs! I love you. ",

     ST77XX_WHITE);

 delay(5000);

 tft.fillScreen(ST77XX_BLACK);

 }else{

   hug=false;

   Serial.println("Hug = false");

 }

 delay(1000);

}

/*

 Since Hug is READ_WRITE variable, onHugChange() is

 executed every time a new value is received from IoT Cloud.

*/

void onHugChange()  {

 if(hug==true){

  Serial.println("onHugChange has been called");

 //  digitalWrite(12, HIGH);

 //  delay(1000);

 //  digitalWrite(12, LOW);

   tft.fillScreen(ST77XX_BLACK);

 testdrawtext(

     "Hugs! I love you. ",

     ST77XX_WHITE);

 delay(5000);

 tft.fillScreen(ST77XX_BLACK);

 }

 }

void testdrawtext(char *text, uint16_t color) {

 tft.setCursor(0, 0);

 tft.setTextColor(color);

 tft.setTextWrap(true);

 tft.print(text);

}

FINAL VIDEO

When you want to build a habit or achieve a goal, you can use this box I designed to help! Our box has 7 switches, and each day you complete a task, you can flip one switch. After successfully completing tasks for 7 consecutive days, the box will release colorful confetti to celebrate! It encourages you to cultivate your habits in 7-day cycles.

Video

Mode

Here’s how the circuit works:

7 Switches: Each switch corresponds to an LED. When a switch is toggled, it lights up the respective LED, indicating that the task for the day is completed.

UNO Board: All switches and LEDs are connected to an Arduino UNO board, which monitors the status of the switches. The Arduino ensures the logic for tracking task completion across the 7-day cycle.

Electromagnet: The electromagnet is also connected to the Arduino. When all 7 switches are toggled (indicating the completion of the 7-day cycle), the UNO board cuts power to the electromagnet, causing it to lose its magnetic hold and release the iron piece attached to a balloon. This action releases colorful confetti to celebrate the achievement.

Here is my code:

int celebrationState = false;
int previousCelebrationState = false;

void setup()
{
pinMode(5, INPUT_PULLUP);
pinMode(6, INPUT_PULLUP);
pinMode(7, INPUT_PULLUP);
pinMode(8, INPUT_PULLUP);
pinMode(10, INPUT_PULLUP);
pinMode(11, INPUT_PULLUP);
pinMode(12, INPUT_PULLUP);

pinMode(4, OUTPUT); // 控制EG的引脚

digitalWrite(4, HIGH); // 默认保持EG通电

Serial.begin(9600);
}

void loop()
{
bool sunday = digitalRead(12);
bool monday = digitalRead(11);
bool tuesday = digitalRead(10);
bool wednesday = digitalRead(8);
bool thursday = digitalRead(7);
bool friday = digitalRead(6);
bool saturday = digitalRead(5);

// 检查所有灯是否亮了（所有输入为LOW）
if (sunday == LOW && monday == LOW && tuesday == LOW && wednesday == LOW && thursday == LOW && friday == LOW && saturday == LOW) {
celebrationState = true;

if (celebrationState == true && previousCelebrationState == false) {

  // 切断EG电源
  digitalWrite(4, LOW);
}

} else {
celebrationState = false;

digitalWrite(4, HIGH);

}

previousCelebrationState = celebrationState;
}

Instructables Link

https://www.instructables.com/HabitSpark-7