arduino clock 2 - ARCHYZONE

04 Jul

#include <SPI.h>

#include <Wire.h>

#include "RTClib.h"

#include <Adafruit_GFX.h>

#include <Adafruit_SSD1306.h>

// setup OLED display

#define OLED_RESET 4

Adafruit_SSD1306 display(OLED_RESET);

#if (SSD1306_LCDHEIGHT != 64)

#error("Height incorrect, please fix Adafruit_SSD1306.h!");

#endif

// Setup RTC

RTC_DS1307 RTC;

char monthString[37]= {"JanFebMarAprMayJunJulAugSepOctNovDec"};

int monthIndex[122] ={0,3,6,9,12,15,18,21,24,27,30,33};

//TMP36 Pin Variables

boolean useTMP36 = true; // set this to false if you don not use TMP36

//boolean useTMP36 = false;

#define aref_voltage 3.3 // we tie 3.3V to ARef and measure it with a multimeter!

int tempPin = 1; //the analog pin that the TMP36's Vout (sense) pin is connected to

//the resolution is 10 mV / degree centigrade with a

//500 mV offset to allow for negative temperatures

int tempReading; // the analog reading from the sensor

void setup() {

Serial.begin(9600);

// If you want to set the aref to something other than 5v

analogReference(EXTERNAL);

Wire.begin();

RTC.begin();

if (! RTC.isrunning()) {

Serial.println("RTC is NOT running!");

// following line sets the RTC to the date & time this sketch was compiled

RTC.adjust(DateTime(__DATE__, __TIME__));

}

// by default, we'll generate the high voltage from the 3.3v line internally! (neat!)

// Use I2C Scanner to check the address, if necessary change the 0x3C in the line below

display.begin(SSD1306_SWITCHCAPVCC, 0x3C); // initialize with the I2C addr 0x3C (for the 128x64)

// init done

// set font size

display.setTextSize(1); // small font size

display.setTextColor(WHITE);

display.clearDisplay();

}

void loop() {

//***** RTC **********

DateTime now = RTC.now();

display.setCursor(32,57);

display.print(now.day(), DEC);

display.print('/');

for (int i=0; i<=2; i++){

display.print(monthString[monthIndex[now.month()-1]+i]);

}

display.print('/');

display.print(now.year(), DEC);

// *********************

// display time in digital format

display.setCursor(10,2);

display.print(now.hour(), DEC);

printDigits(now.minute());

printDigits(now.second());

// Now draw the clock face

display.drawCircle(display.width()/2, display.height()/2, 20, WHITE);

display.drawCircle(display.width()/2, display.height()/2, 2, WHITE);

//hour ticks

for( int z=0; z < 360;z= z + 30 ){

//Begin at 0° and stop at 360°

float angle = z ;

angle=(angle/57.29577951) ; //Convert degrees to radians

int x2=(64+(sin(angle)*20));

int y2=(32-(cos(angle)*20));

int x3=(64+(sin(angle)*(20-5)));

int y3=(32-(cos(angle)*(20-5)));

display.drawLine(x2,y2,x3,y3,WHITE);

}

// display second hand

float angle = now.second()*6 ;

angle=(angle/57.29577951) ; //Convert degrees to radians

int x3=(64+(sin(angle)*(20)));

int y3=(32-(cos(angle)*(20)));

display.drawLine(64,32,x3,y3,WHITE);

// display minute hand

angle = now.minute() * 6 ;

angle=(angle/57.29577951) ; //Convert degrees to radians

x3=(64+(sin(angle)*(20-3)));

y3=(32-(cos(angle)*(20-3)));

display.drawLine(64,32,x3,y3,WHITE);

// display hour hand

angle = now.hour() * 30 + int((now.minute() / 12) * 6 ) ;

angle=(angle/57.29577951) ; //Convert degrees to radians

x3=(64+(sin(angle)*(20-11)));

y3=(32-(cos(angle)*(20-11)));

display.drawLine(64,32,x3,y3,WHITE);

// now add temperature if needed

if (useTMP36==true) {

//getting the voltage reading from the temperature sensor

tempReading = analogRead(tempPin);

// converting that reading to voltage, for 3.3v arduino use 3.3

float voltage = tempReading * aref_voltage;

voltage /= 1024.0;

// now print out the temperature

int temperatureC = (voltage - 0.5) * 100 ; //converting from 10 mv per degree with 500 mV offset

display.setCursor(100,2);

display.print(temperatureC);

display.print("C");

}

// update display with all data

display.display();

delay(100);

display.clearDisplay();

}

// **************** End Main Loop *****************

void printDigits(int digits){

// utility function for digital clock display: prints preceding colon and leading 0