Infinity Mirror Clock using Arduino

1. A Standalone Arduino: http://dushyant.ahuja.ws/2013/10/standalone-arduin… OR Arduino mini pro: http://www.aliexpress.com/item/10Pcs-Lot-Pro-Mini-…
2. RTC Module – DS1302: http://fabtolab.com/DS1302-RTC-module?search=rtc
3. LM2596 Step Down Adjustable Power Supply Module 1.3V-35V: http://cgi.ebay.in/ws/eBayISAPI.dll?ViewItem&item=…
4. 1m 60LEDs/M Addressable RGB LED Strip (WS2812B): http://www.aliexpress.com/item/1M-WS2812-WS2812B-6…
5. HC-05 Bluetooth module: http://www.aliexpress.com/item/RS232-TTL-LC-05-Wir…
6. IR Proximity Sensor: http://www.instructables.com/id/Simple-IR-proximit…4 IR LEDs; 1 IR LED detector: http://www.evelta.com/industrial-control/sensors/5…
7. Touch Pad: http://www.aliexpress.com/item/Touch-Pad-Brick-Sen…
8. 9V – 2A Adapter
9. CP2102 USB-to-TTL (the RST pin on the CP2102 is not for resetting the arduino – you have to solder a wire to the DTR pad on the PCB – which sends a reset signal to program the arduino. This has to be connected to the DTR pin on the Arduino

The circuit is very simple:

1. LED Strip – Connect power to the LM2596 Step Down Adjustable Power Supply Module – ensure you adjust the pot so that the output is 5V; Connect the ground to the common ground; Connect data to pin D5 of the Arduino
2. Touch Sensor – data to pin D2 of Arduino
3. RTC Module – SDA and SCL to the A4 and A5 of the Arduino respectively
4. Bluetooth Module – Connect RX to Arduino’s TX and TX to Arduino’s RX. You will have to break-out pin 32 on the module to the DTR pin on the Arduino (This allows you to program the Arduino over bluetooth)
5. IR Proximity Sensor – create the sensor as per this instructable: http://www.instructables.com/id/Simple-IR-proximit… – connect the photo-diode to A1 (A0 on the instructable schematic) and the IR LEDs to D13 (D2 on the instructable schematic)
6. Connect the Power 9V 2A Power supply to the input of the 7805 and the LM2596

To setup the bluetooth programming circuit, please follow this link: http://makezine.com/projects/diy-arduino-bluetooth…

This clock uses the following libraries (and all thanks to the authors of these libraries):

• RTCLib Arduino Library: https://github.com/adafruit/RTClib
• FastLED Arduino Library v2.1: http://fastled.io/ https://github.com/FastLED/FastLED/tree/FastLED2.1
• SerialCommand Arduino Library: https://github.com/scogswell/ArduinoSerialCommand…
• TimerOne Arduino Library: https://github.com/scogswell/ArduinoSerialCommand…

The latest version of the code can be downloaded from the project github: https://github.com/dushyantahuja/Smart-Infinity-Mi…

#include <Wire.h>
#include "RTClib.h"
#include "FastLED.h"
#include <SoftwareSerial.h>
#include <SerialCommand.h>
#include "EEPROM.h"
#include "TimerOne.h"

#define NUM_LEDS 60
#define DATA_PIN 5
#define UPDATES_PER_SECOND 100
#define SWITCHPIN 2

// Variables for IR Proximity

int IRpin = A1;               // IR photodiode on analog pin A1
int IRemitter = 13;            // IR emitter LED on digital pin 4

//

CRGBPalette16 currentPalette;
TBlendType    currentBlending;

CRGB leds[NUM_LEDS],minutes,hours,seconds,l,bg,lines;
RTC_DS1307 rtc;
SerialCommand sCmd;
boolean missed=0, ledState = 1, lastsec=1, multieffects = 0;
byte lastsecond, rain;
int light_low, light_high;
DateTime now;

void(* resetFunc) (void) = 0;

void setup() {
  digitalWrite(IRemitter,LOW);             // turning the IR LEDs off - as a precaution - they don't have current limiting resistors
  Wire.begin();
  rtc.begin();
  Serial.begin(115200);
  FastLED.addLeds<WS2812B, DATA_PIN, GRB>(leds, NUM_LEDS);
  currentPalette = RainbowStripeColors_p;
  currentBlending = NOBLEND;

  // ******** Setup the default values for parameters (if not set before)
  if (EEPROM.read(99) != 1){               // Check if colours have been set or not
    EEPROM.write(0,255);                   // Seconds Colour - R-G-B - White
    EEPROM.write(1,255);
    EEPROM.write(2,255);
    EEPROM.write(3,255);                   // Minutes Colour - R-G-B - Red
    EEPROM.write(4,0);
    EEPROM.write(5,0);
    EEPROM.write(6,0);                     // Hours Colour - R-G-B - Green
    EEPROM.write(7,255);
    EEPROM.write(8,0);
    EEPROM.write(9,0);                     // BG Colour - R-G-B - Black
    EEPROM.write(10,0);
    EEPROM.write(11,0);
    EEPROM.write(12, 0);                   // Light sensitivity - low
    EEPROM.write(13, 55);                  // Light sensitivity - high 
    EEPROM.write(14, 15);                  // Minutes for each rainbow   
    EEPROM.write(99,1);
  } 
  // Else read the parameters from the EEPROM
  else {
    seconds.r = EEPROM.read(0);
    seconds.g = EEPROM.read(1);
    seconds.b = EEPROM.read(2);  
    minutes.r = EEPROM.read(3);
    minutes.g = EEPROM.read(4);
    minutes.b = EEPROM.read(5);
    hours.r = EEPROM.read(6);
    hours.g = EEPROM.read(7);
    hours.b = EEPROM.read(8);
    bg.r = EEPROM.read(9);
    bg.g = EEPROM.read(10);
    bg.b = EEPROM.read(11);
    light_low = EEPROM.read(12);
    light_high = EEPROM.read(13); 
    rain = EEPROM.read(14); 
  }

  // ********** Setup the serial commands

  sCmd.addCommand("MULTI", set_multi);
  sCmd.addCommand("STAT", clockstatus);
  sCmd.addCommand("SETRAIN", set_rainbow);
  sCmd.addCommand("HOUR", set_hour);
  sCmd.addCommand("MIN", set_minute);
  sCmd.addCommand("SEC", set_second);
  sCmd.addCommand("BG", set_bg);
  sCmd.addCommand("LIGHT", set_light);
  sCmd.addCommand("TIME", set_time);
  sCmd.addCommand("MISSED", missedCall);
  sCmd.addCommand("MISSEDOFF", missedOff);
  sCmd.addCommand("RAINBOW", effects);
  sCmd.addCommand("MISSED", missedCall);
  sCmd.addCommand("MISSEDOFF", missedOff);
  sCmd.addDefaultHandler(effects);

  // ********** Set all LEDs to background colour
  for (int i = 0; i < NUM_LEDS; i++) {
    leds[i] = bg;
  }

  pinMode(IRemitter,OUTPUT);  // IR emitter LED on digital pin 2
  digitalWrite(IRemitter,LOW);// setup IR LED as off
  clockstatus();
  attachInterrupt(1, set_multi, FALLING);
  Timer1.initialize();
  Timer1.attachInterrupt(state, 500000);
}

void loop() {
  sCmd.readSerial();
  if(readIR(10) > 50){            // Switch off LEDs if someone is near the mirror - so that it can be used as a mirror. Switch off LEDs between 12:00 and 6:00 to save energy and cool down the LEDs and power supplies
    for (int i = 0; i < NUM_LEDS; i++) {
      leds[i] = CRGB::Black;
    }
    FastLED.show();
    ledState = 1;
    //FastLED.delay(200);
  }
  else {
  for (int i = 0; i < NUM_LEDS; i++) {
    leds[i] = bg;
  } 
  if(multieffects){                 // Check if the button for multi-effects has been pressed
    uint8_t secondHand;
    secondHand = now.second();
    if( secondHand ==  0)  { currentPalette = RainbowColors_p;         currentBlending = BLEND; }
    if( secondHand == 30)  { currentPalette = RainbowStripeColors_p;   currentBlending = BLEND;  }
    static uint8_t startIndex = 0;
    startIndex = startIndex + 1;
    FillLEDsFromPaletteColors( startIndex);
    FastLED.show();
  }
  else if(ledState){                	// Main clock code
    // Setting brightness to light_high
    int x = light_high; 		// analogRead(IRpin);
    now =  rtc.now();        
    if(( now.minute() % rain == 0 && now.second() == 0)){
       effects();
    }
    for(byte i=0; i<=now.minute();i++){
      //Serial.println(minutes);
      leds[i] = minutes;
    }
    //Serial.println(now.hour(),DEC);
    for(byte i = 0; i<60; i+=5){
      leds[i]=CRGB::White;
    }
    for(byte i=(now.hour()%12)*5; i<=((now.hour())%12)*5+(now.minute()/12);i++){
      leds[i] = hours;
    }
    if(now.hour() < 7) LEDS.setBrightness(constrain(light_low,0,100)); 		// Set brightness to light_low during night - cools down LEDs and power supplies.
    else LEDS.setBrightness(constrain(light_high,10,255));
    if(lastsec){
      l=leds[now.second()];
      leds[now.second()] = seconds;
      lastsecond = now.second();
      lastsec = 0;
      // Serial.println("ON");
    } else {
      leds[lastsecond] = l;
      if(missed) all_off();
      // Serial.println("OFF");
      lastsec = 1;
    }
    FastLED.show();
    ledState = 0;
  }
  //delay(250);
  if(multieffects) FastLED.delay(1000 / UPDATES_PER_SECOND);
  }
} 

void FillLEDsFromPaletteColors( uint8_t colorIndex)
{
  uint8_t brightness = 255;

  for( int i = 0; i < NUM_LEDS; i++) {
    leds[i] = ColorFromPalette( currentPalette, colorIndex, brightness, currentBlending);
    colorIndex += 3;
  }
}

void set_multi(){
  static unsigned long last_interrupt_time = 0;
  unsigned long interrupt_time = millis();
  if (interrupt_time - last_interrupt_time > 200) 
  {
    if(multieffects){
      for (int i = 0; i < NUM_LEDS; i++) {
        leds[i] = bg;
      }
    }
    multieffects = !multieffects;
    Serial.println(multieffects);
  }
  last_interrupt_time = interrupt_time;
}

void set_rainbow(){
  rain = atoi(sCmd.next());
  EEPROM.write(14,rain);
  Serial.println("RAINBOW TIME SET");
}

void clockstatus(){
  Serial.println("Status: ");
  Serial.print("BG: ");
  Serial.print(bg.r);
  Serial.print(" ");
  Serial.print(bg.g);
  Serial.print(" ");
  Serial.println(bg.b);
  Serial.print("SEC: ");
  Serial.print(seconds.r);
  Serial.print(" ");
  Serial.print(seconds.g);
  Serial.print(" ");
  Serial.println(seconds.b);
  Serial.print("MINUTE: ");
  Serial.print(minutes.r);
  Serial.print(" ");
  Serial.print(minutes.g);
  Serial.print(" ");
  Serial.println(minutes.b);
  Serial.print("HOUR: ");
  Serial.print(hours.r);
  Serial.print(" ");
  Serial.print(hours.g);
  Serial.print(" ");
  Serial.println(hours.b);
  Serial.print("Ambient Light: ");
  Serial.println(analogRead(IRpin));
  Serial.print("Light set - High:");
  Serial.println(light_high,DEC);
  Serial.print("Light set - Low:");
  Serial.println(light_low,DEC);
  Serial.print("Date: ");
  DateTime now =  rtc.now(); // DateTime(2014,5,2,22,30,0); 
  Serial.print(now.day(), DEC);
  Serial.print('/');
  Serial.print(now.month(), DEC);
  Serial.print('/');
  Serial.println(now.year(), DEC);
  Serial.print("Time: ");
  Serial.print(now.hour(), DEC);
  Serial.print(':');
  Serial.print(now.minute(), DEC);
  Serial.print(':');
  Serial.print(now.second(), DEC);
  Serial.println();
  Serial.print("Distance: ");
  Serial.println(readIR(5),DEC);
}

void state(){
  ledState = 1;
}

const int colorWheelAngle = 255 / NUM_LEDS;

void effects(){
  Serial.println("RAINBOW");
  for (int j=0; j<3; j++){
    for (int i = 0; i < 60; i++) { 
      FillLEDsFromPaletteColors(i);
      FastLED.show();
      delay(30);
    }
  }
  lastsec = 1;
}

void missedCall()
{
    missed = 1;
}

void missedOff()
{
    missed = 0;
}

void all_off(){
  for (int i = 0; i < NUM_LEDS; i++) {
    leds[i] = CRGB::Black;
  }
}

void set_hour(){
  hours.r = atoi(sCmd.next());
  hours.g = atoi(sCmd.next());
  hours.b = atoi(sCmd.next());
  EEPROM.write(6,hours.r);
  EEPROM.write(7,hours.g);
  EEPROM.write(8,hours.b);
  Serial.println("HOUR COLOUR SET");  
}

void set_minute(){
  minutes.r = atoi(sCmd.next());
  minutes.g = atoi(sCmd.next());
  minutes.b = atoi(sCmd.next());
  EEPROM.write(3,minutes.r);
  EEPROM.write(4,minutes.g);
  EEPROM.write(5,minutes.b); 
  Serial.println("MINUTE COLOUR SET");  
}

void set_second(){
  seconds.r = atoi(sCmd.next());
  seconds.g = atoi(sCmd.next());
  seconds.b = atoi(sCmd.next());
  EEPROM.write(0,seconds.r);
  EEPROM.write(1,seconds.g);
  EEPROM.write(2,seconds.b);
  Serial.println("SECOND COLOUR SET"); 
}

void set_bg(){
  bg.r = atoi(sCmd.next());
  bg.g = atoi(sCmd.next());
  bg.b = atoi(sCmd.next());
  EEPROM.write(9,bg.r);
  EEPROM.write(10,bg.g);
  EEPROM.write(11,bg.b);
  Serial.println("BG COLOUR SET");
  for (int i = 0; i < NUM_LEDS; i++) {
    leds[i] = bg;
  }  
}

void set_light(){
  light_low = atoi(sCmd.next());
  light_high = atoi(sCmd.next());
  EEPROM.write(12,light_low);
  EEPROM.write(13,light_high);
  Serial.println("LIGHT SET"); 
}

void set_time(){
  String set_date, set_time;
  set_date = (String)sCmd.next() + ' ' + (String)sCmd.next() + ' ' + (String)sCmd.next();
  set_time = (String)sCmd.next();
  rtc.adjust(DateTime(set_date.c_str(),set_time.c_str()));
}

int readIR(int times){
  int ambientIR;                              // variable to store the IR coming from the ambient
  int obstacleIR;                             // variable to store the IR coming from the object
  int value[10];                              // variable to store the IR values
  int distance;                               // variable that will tell if there is an obstacle or not
  for(int x=0;x<times;x++){     
    digitalWrite(IRemitter,LOW);              // turning the IR LEDs off to read the IR coming from the ambient
    delay(1);                                             // minimum delay necessary to read values
    ambientIR = analogRead(IRpin);            // storing IR coming from the ambient
    digitalWrite(IRemitter,HIGH);             // turning the IR LEDs on to read the IR coming from the obstacle
    delay(1);                                 // minimum delay necessary to read values
    obstacleIR = analogRead(IRpin);           // storing IR coming from the obstacle
    value[x] = ambientIR-obstacleIR;          // calculating changes in IR values and storing it for future average
  }

  for(int x=0;x<times;x++){                   // calculating the average based on the "accuracy"
    distance+=value[x];
  }
  digitalWrite(IRemitter,LOW);                // turning the IR LEDs off
  return(distance/times);                     // return the final value
}