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### Topic: Moon phase for tank light (Read 414 times)previous topic - next topic

#### fabyox

##### Jun 28, 2014, 08:26 pmLast Edit: Jun 28, 2014, 08:34 pm by fabyox Reason: 1
Hi everyone.

I need to implement a lunar cycle to my led Light for my tank.
Hi have four bank of led, 2 blues and 2 whites, and some led Smd 5050 to simulate moon phase.
The cat 4101 are driving the 2 blues and whites, and a tip 120 is driving the 5050's.
I am working with Arduino uno REV 3.
in the future i want to add a wheter sketch aswell, but i am newbie, and for now moon phase is enough.

I have this symple sketch taht i like, cause is very simple, and update leds by seconds.

Code: [Select]
`#include "Wire.h"#include #define DS1307_ADDRESS 0x68  // This is the address const int Blue1Pin = 10;const int Blue2Pin = 5;const int White3Pin = 3;const int White4Pin = 11;const unsigned long HOUR = 60 * 60;const unsigned long MINUTE = 60;const int TARGET_BRIGHTNESS = (255 * 4 / 5); // Target brightness is 3/4 of fullLiquidCrystal lcd(12, 13, 4, 6, 7, 8); /***** RTC Functions *******/// Convert normal decimal numbers to binary coded decimalbyte decToBcd(byte val){  return ( (val/10*16) + (val%10) );}// 1) Sets the date and time on the ds1307// 2) Starts the clock// 3) Sets hour mode to 24 hour clock// Assumes you're passing in valid numbers.void setDateDs1307(byte second,        // 0-59                   byte minute,        // 0-59                   byte hour,          // 1-23                   byte dayOfWeek,     // 1-7                   byte dayOfMonth,    // 1-28/29/30/31                   byte month,         // 1-12                   byte year)          // 0-99{   Wire.beginTransmission(DS1307_ADDRESS);   Wire.write(0);   Wire.write(decToBcd(second));   Wire.write(decToBcd(minute));   Wire.write(decToBcd(hour));   Wire.write(decToBcd(dayOfWeek));   Wire.write(decToBcd(dayOfMonth));   Wire.write(decToBcd(month));   Wire.write(decToBcd(year));   Wire.endTransmission();}// Gets the date and time from the ds1307void getDateDs1307(byte *second,          byte *minute,          byte *hour,          byte *dayOfWeek,          byte *dayOfMonth,          byte *month,          byte *year)         {         }void setup(){  Wire.begin();  byte second, minute, hour, dayOfWeek, dayOfMonth, month, year;  Wire.begin();  // Change these values to what you want to set your clock to.  // You probably only want to set your clock once and then remove  // the setDateDs1307 call.  second = 55;  minute = 03;  hour = 14;  dayOfWeek = 4;  // Sunday is 0  dayOfMonth = 4;  month = 8;  year = 11;  setDateDs1307(second, minute, hour, dayOfWeek, dayOfMonth, month, year);}// Convert binary coded decimal to normal decimal numbersbyte bcdToDec(byte val)  {  return ( (val/16*10) + (val%16) );}void loop(){  /////  Get time from RTC into RTCHour, RTCMinute, RTCSecond  // Gets the date and time from the ds1307   // Set the register pointer to 0 (Second)  Wire.beginTransmission(DS1307_ADDRESS);  Wire.write((byte)0);  Wire.endTransmission();  //  Read Second, Minute, and Hour  Wire.requestFrom(DS1307_ADDRESS, 3);  int RTCSecond = bcdToDec(Wire.read());  int RTCMinute = bcdToDec(Wire.read());  int RTCHour = bcdToDec(Wire.read() & 0b111111); //24 hour time    lcd.setCursor(0, 0);  lcd.print(RTCHour, DEC);  lcd.print(":");  lcd.print(RTCMinute, DEC);  lcd.print(":");  lcd.print(RTCSecond, DEC);  lcd.print(" ");  unsigned long time = RTCHour * HOUR + RTCMinute * MINUTE + RTCSecond;  // Time in seconds  analogWrite(Blue1Pin,   brightness(time, 14*HOUR,          14*HOUR+7*MINUTE));  analogWrite(Blue2Pin,   brightness(time, 14*HOUR+1*MINUTE, 14*HOUR+6*MINUTE));  analogWrite(White3Pin, brightness(time, 14*HOUR+2*MINUTE,  14*HOUR+4*MINUTE));  analogWrite(White4Pin, brightness(time, 14*HOUR+3*MINUTE,  14*HOUR+5*MINUTE));  delay(1000);}byte brightness(unsigned long time, unsigned long fadeUpStart, unsigned long fadeDownStart){  //  Mid day, light is at maximum brightness  if (time >= fadeUpStart + 1*MINUTE  && time <= fadeDownStart)    return TARGET_BRIGHTNESS;  // Dawn:  fade up the light  if (time >= fadeUpStart && time <= fadeUpStart + 1*MINUTE) //FADE UP  {    unsigned long seconds = time - fadeUpStart;  // Number of seconds into the fade time    return TARGET_BRIGHTNESS * seconds / (MINUTE*1);  // Fade up based on portion of interval completed.  }  // Evening: Fade down the light  if (time >= fadeDownStart && time <=   <=   fadeDownStart + 1*MINUTE)  // Fading down  {    unsigned long seconds = (fadeDownStart + (MINUTE*1)) - time;  // Number of seconds remaining in the fade time    return TARGET_BRIGHTNESS * seconds / (MINUTE*1);  // Fade down based on portion of interval left.  }  // The remaining times are night and the lights is off  return 0;  // Shouldn't get here}`

of course the period part it's just for test for now...

Now i would like to get Moon Phase Like:

Code: [Select]
`int moon = 5;    int iBlueIntensity;    //declare the integer of blue intensityfloat fBlueIntensity;    //declare the floating point version of blue intensity// RTC variables byte second, rtcMins, oldMins, rtcHrs, oldHrs, dayOfWeek, dayOfMonth, month, year, psecond;   float fSecond, fHour, fMinute;        //turn the times read from the RTC into float for math ops  byte second, minute, hour, dayOfWeek, dayOfMonth, month, year; //declare variables to hold the times  getDateDs1307(&second, &rtcMins, &rtcHrs, &dayOfWeek, &dayOfMonth, &month, &year);  fSecond = (float) second;            //sets fSecond as the float version of the integer second from the RTC  fMinute = (float) minute;            //same as above, but for the minute  fHour = (float) hour;                //ditto, but for the hour  int lunarCycle = moonPhase(year, month, dayOfMonth); //get a value for the lunar cycle     if ( ((hour == 14) && (minute < 7)) || (hour < 14))//Off at 730am.  {    fBlueIntensity = 0;        //...then we want the blue LED at the max brightness (255)  }  else if (hour > 14) //&& (hour < 19))             // On at 5pm  {        fBlueIntensity = 255 * (((fHour - 17) + (fMinute / 59)) / 7);   //...set intensity out of 255 based on time since 17:00  }  else  {    fBlueIntensity = 0;  } //---------account for the moon cycle with the blue LEDs---------//  if (lunarCycle == 0)        //new moon  {    fBlueIntensity /= 2;  }  if ((lunarCycle == 1) || (lunarCycle == 7))    //cresent  {    fBlueIntensity /= 1.75 ;  }  if ((lunarCycle == 2) || (lunarCycle == 6))    //half moon  {   fBlueIntensity /= 1.5;  }  if ((lunarCycle == 3) || (lunarCycle == 5))    //gibbous  {    fBlueIntensity /= 1.25;  }  //full moon is full intensity  //----------FLOAT TO INT-------------//  iBlueIntensity = (int) fBlueIntensity;BBY  //---prepare the intensities to be written to pin----//  if (iBlueIntensity < 0) //if the blue intensity is less then 0, set it to 0  {    iBlueIntensity = 0;  }   analogWrite(moon, iBlueIntensity);  delay(1000);`

The answer is how can I tie together the two pieces of code?

thanks to all those who can help me

#### BulldogLowell

#1
##### Jun 29, 2014, 06:13 pm
are you trying to adjust the on/off time with sunset/sunrise?

#### robtillaart

#2
##### Jun 29, 2014, 10:41 pm
old sunset/rise discussion here - http://forum.arduino.cc/index.php/topic,66426.0.html -
Rob Tillaart

Nederlandse sectie - http://arduino.cc/forum/index.php/board,77.0.html -
(Please do not PM for private consultancy)

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