Wrist Watch

PROLOGUE

A while back I bought a pair of QDSP-6064 LED bubble displays. I didn’t know much of what I wanted to do with them, but I did know I wanted to make a wrist watch. The project was shevled until I learned EagleCAD, but here are the notes, code and CAM files for you to be able to make one yourself.

Core Components Needed

1. ATMEGA-328P and related components
2. A QDSP-6064 Bubble Display

Let’s get it on

Solder it up, and flash it!

#include <TimeLib.h>
#include <Time.h>
#include "SevSeg.h"

//date --date="-5 hours" +T%s\n > /dev/ttyACM0
//Create an instance of the object.
SevSeg myDisplay;

//Create global variables
unsigned long timer;
unsigned long blinker;
unsigned long displaysleep;
boolean blinkdisplay=true;
boolean displaypower=true;
boolean buttonActive = false;
boolean longPressActive = false;
boolean confighours = true;
long buttonTimer = 0;
long longPressTime = 1000;
time_t t = now();

int button = A5;
boolean timeset=false;

#define TIME_HEADER  "T"
#define TIME_REQUEST  7

void setup()
{
  pinMode(button, INPUT);
  int displayType = COMMON_CATHODE; //Your display is either common cathode or common anode

  Serial.begin(9600);
  //This pinout is for a bubble dispaly
   //Declare what pins are connected to the GND pins (cathodes)
   int digit1 = 8; //Pin 1
   int digit2 = 5; //Pin 10
   int digit3 = 11; //Pin 4
   int digit4 = 13; //Pin 6

   //Declare what pins are connected to the segments (anodes)
   int segA = 7; //Pin 12
   int segB = 6; //Pin 11
   int segC = 10; //Pin 3
   int segD = 3; //Pin 8
   int segE = 9; //Pin 2
   int segF = 4; //Pin 9
   int segG = 2; //Pin 7
   int segDP= 12; //Pin 5

  int numberOfDigits = 4;
  myDisplay.Begin(displayType, numberOfDigits, digit1, digit2, digit3, digit4, segA, segB, segC, segD, segE, segF, segG, segDP);
  myDisplay.SetBrightness(100);

  timer = millis();
  blinker = millis();
  displaysleep = millis()+10000;
  setSyncProvider( requestSync);
  Serial.println("Waiting for sync message");
}

void loop()
{
  if (((signed long)(millis() - timer)) > 0) {
    timer = millis() + 1000;
    Serial.println(displaysleep);
  }
  char tempString[10]; //Used for sprintf
  sprintf(tempString, "%02d%02d", hour(now()),minute(now()));
  if (blinkdisplay==true) {
    displaysleep = millis()+10000;
    if (((signed long)(millis() - blinker)) > 0) {
      if (displaypower == true) {
        displaypower = false;
      } else {
        displaypower = true;
      }
      blinker = millis() + 1000;
    }
  } else {
    displaypower=true;
  }
  if (((((signed long)(millis() - displaysleep)) < 0) && displaypower == true)) {
    //Serial.println("display put to sleep");
    //displaypower = false;
  //}  
  //if (displaypower == true) {
    myDisplay.DisplayString(tempString, 0);
  }

  
  if (digitalRead(button) == HIGH) {
    displaysleep = millis()+10000;
    if (buttonActive == false) {
      buttonActive = true;
      buttonTimer = millis();
    }
    if ((millis() - buttonTimer > longPressTime) && (longPressActive == false)) {
      longPressActive = true;
      if (timeset == false) {
        Serial.println("Configuring time");
        blinkdisplay=true;
        confighours= !confighours;
      } else {
        setTime(now());
        blinkdisplay=false;
        Serial.println("Done configuring time");
      }
      timeset= !timeset;
    }
  } else {
    //displaysleep = millis()+10000;
    if (buttonActive == true) {
      if (longPressActive == true) {
        longPressActive = false;
      } else {
        if (timeset == true) {
          if (confighours==true) {
            t = now()+3600;
          } else {
            t = now()+60;
          }
          setTime(t);
          blinkdisplay=false;
        }
      }
      buttonActive = false;
    }
  }
  if (Serial.available()) {
    processSyncMessage();
  }
}

void processSyncMessage() {
  unsigned long pctime;
  const unsigned long DEFAULT_TIME = 0; //1357041600; // Jan 1 2013

  if(Serial.find(TIME_HEADER)) {
     pctime = Serial.parseInt();
     if( pctime >= DEFAULT_TIME) { // check the integer is a valid time (greater than Jan 1 2013)
       setTime(pctime); // Sync Arduino clock to the time received on the serial port
       timeset=false;
       blinkdisplay=false;
     }
  }
}

time_t requestSync()
{
  Serial.write(TIME_REQUEST);  
  return 0; // the time will be sent later in response to serial mesg
}