Final Project

Potential project Ideas

I have had quite a few project ideas which are as follows:

  1. Prosthetic which can measure grip force
  2. Hand Shake improver(based on the same technique as above)
  3. Lamp which unfolds when it senses presence
  4. Slim credit card size drone with single rotor
  5. Robotic sting ray or snake
  6. Fog based hologram
  7. Harati(Aarti) Drone

Finally I have finalized on the following Project

Shoto Pad:

A Coaster which can heat a cup of coffee or cool a cool drink can using a peltier effect module.

Taking inspiration from the character Shoto Todoroki from Boku No hero Academia whose quirk is Half hot-Half cold I came up with this project.

Research

Initially I uderestimated the peltier module in ever way imaginable starting from it power requirements, size, heating and power efiiciency even the time it takes to show the results.

2D and 3D Modeling

Concept Sketch

Spcs 2 by vijaychandu93 on Sketchfab

Update

Some other section

This is an updated text.

Materials

Code Example

Use the three backticks to separate code.

#include <math.h>
#include "U8glib.h"

// for Writing Programm
#define MOSI 11
#define MISO 12
#define SCK 13
#define RESET 22

// for Serial Communication
#define RXD 0
#define TXD 1

// OUTPUT PINS 5,6
#define PWM_PIN_1 5
#define PWM_PIN_2 6
// LED PINS 0～4
#define LED_1 2
#define LED_2 3
#define LED_3 4

// INPUT PINS
// TERMO_SENSOR PIN 15 A1
#define THERMO_SENSOR A1
// POTENTIOMETOR PIN 14 A0
#define TEMPERATURE_SETTING A0
//  PWM OUTPUT VALUE
#define PWM_VALUE 255

// Temperature Setting Value
#define COOL 1
#define NORMAL 2
#define WARM 3

// OLED SH1106 Driver setting
// SW SPI Com: SCK = 13, MOSI = 11, CS = 10, A0(MISO) = 12
U8GLIB_SH1106_128X64 u8g(13, 11, 10, 12);  

float temperature = 0.0;
int setting = NORMAL;
String strSetting = "NORMAL";

// OLED Display draw 
void draw(void) {
  // graphic commands to redraw the complete screen should be placed here  
  u8g.setFont(u8g_font_unifont);
  //u8g.setFont(u8g_font_osb21);
  byte strLen = u8g.drawStr( 0, 22, "NowTemp:");
  u8g.setPrintPos(strLen + 5, 22);
  u8g.print(temperature);
  strLen = u8g.drawStr( 0, 44, "Setting:");  
  u8g.setPrintPos(strLen + 5, 44);
  u8g.print(strSetting);  
}

// initialize
void setup() {
  //  Serial.begin(9600); // for Debug
  analogReference(DEFAULT); // AnalogRead range of 0～5V 
  pinMode(PWM_PIN_1, OUTPUT);
  pinMode(PWM_PIN_2, OUTPUT);
  pinMode(LED_1, OUTPUT);
  pinMode(LED_2, OUTPUT);
  pinMode(LED_3, OUTPUT);

  pinMode(THERMO_SENSOR, INPUT);
  pinMode(TEMPERATURE_SETTING, INPUT);

  resetLED();

  // flip screen, if required
//  u8g.setRot180();

  // set SPI backup if required
  //u8g.setHardwareBackup(u8g_backup_avr_spi);

  // assign default color value
  if ( u8g.getMode() == U8G_MODE_R3G3B2 ) {
    u8g.setColorIndex(255);     // white
  }
  else if ( u8g.getMode() == U8G_MODE_GRAY2BIT ) {
    u8g.setColorIndex(3);         // max intensity
  }
  else if ( u8g.getMode() == U8G_MODE_BW ) {
    u8g.setColorIndex(1);         // pixel on
  }
  else if ( u8g.getMode() == U8G_MODE_HICOLOR ) {
    u8g.setHiColorByRGB(255,255,255);
  }

  pinMode(8, OUTPUT);
}

void loop() { 
  // GetTemperatureSetting
  setting = getTemperatureSetting();
  // GetTemperatureValue
  temperature = getTemperature();
  // Output PWM
  outputPWM();
  // 1000ms wait
  delay(1000);
  // picture loop
  u8g.firstPage();  
  do {
    draw();
  } while( u8g.nextPage() );  
}

/**
 * get Temperature
 * return setting 
 */
int getTemperatureSetting(){
//  Serial.println("getTemperatureSetting Start");
  int ret = NORMAL;
  // analogRead 0～1023
  int val = analogRead(TEMPERATURE_SETTING);
  if(val < 350){
    digitalWrite(LED_1, LOW);
    digitalWrite(LED_2, LOW);
    digitalWrite(LED_3, HIGH);
    ret = WARM;    
    strSetting = "WARM";
  }else if(val > 700){ 
    digitalWrite(LED_1, HIGH);
    digitalWrite(LED_2, LOW);
    digitalWrite(LED_3, LOW);
    ret = COOL;    
    strSetting = "COOL";
  }else{
    digitalWrite(LED_1, LOW);
    digitalWrite(LED_2, HIGH);
    digitalWrite(LED_3, LOW);
    ret = NORMAL;      
    strSetting = "NORMAL";
  }
//  Serial.println(ret);
//  Serial.println("getTemperatureSetting End");
  return ret;
}

/**
 * read Temperature Value
 * return temperature 0～50
 */
float getTemperature(){
  Serial.println("getTemperature Start");
  // Read analog Value
  int val = analogRead(THERMO_SENSOR);
  float temp = val * (506.0 / 1023.0);
  temp = floor(temp * 100) /100; 
  Serial.println(temp);  
  Serial.println("getTemperature End");
  return (float)temp;
}

/**
 * Turn off All LED
 */
void resetLED(){  
  digitalWrite(LED_1, LOW);
  digitalWrite(LED_2, LOW);
  digitalWrite(LED_3, LOW);
}

/**
 * PWM OUTPUT
 * COOL = output PWM_PIN_1
 * WARM = output PWM_PIN_2
 * int tempSetting 
 * int tempValue
 */
void outputPWM(){
  switch (setting){
    case COOL:
      // surface cooling
      analogWrite( PWM_PIN_1, PWM_VALUE);
      analogWrite( PWM_PIN_2, 0);
    break;
    case WARM: 
      // surface warming
      analogWrite( PWM_PIN_1, 0);
      analogWrite( PWM_PIN_2, PWM_VALUE);
    break;
    case NORMAL:
    default:
      // don't output
      analogWrite( PWM_PIN_1, 0);
      analogWrite( PWM_PIN_2, 0);
  }
}

Video

From Vimeo

Fab-20190508B_Review14: mechanical design from Academany on Vimeo.

From Youtube

3D Models

Dita's Gown by Francis Bitonti Studio on Sketchfab