The Planted Tank Forum - View Single Post - Calling all DIY LED "Junkies" - Your opinions wanted!
View Single Post
Old 12-12-2012, 10:41 PM   #145
O2surplus
Planted Tank Enthusiast
 
O2surplus's Avatar
 
PTrader: (4/100%)
Join Date: Jan 2010
Location: yorba linda, ca.
Posts: 577
Default

Quote:
Originally Posted by skanderson View Post
ok been too busy with other projects to mess with the coding and get it working. is there a way that i could download someone elses dimming and timing code to get it up and working. all im looking for is a 1 to2 hour ramp up and down with a 12 hour on/off cycle for all 6 channels. and i will definately be interested in the new build you are putting together. thanks again in advance, steve


Here's some code that will get you up and running. Just adjust the variables to your liking and let-her-rip.

Code:
/*
// ATMEG328P-AU Microcontroller LED lighting controller for aquarium use. 
// The programming code uses a DS1307 Real Time clock to set the LED lighting schedule. Current date and time can be accessed with the serial monitor set to 9600 baud.
// sunrise/sunset time,length of fade duration, and the length of the day are selectable via the programmed schedule.  
//  Circuit description
// PWM pins described below connected to dimming circuits on drivers spread among 6 seperate channels.
// DS1307 RTC ( real time clock) connected via I2C protocol.
*/



// Pins to control each channel LEDs. Change these if you're using different pins.

int oneLed = 3;       // LED PWM arduino pin for channel one.

int twoLed = 5;       // LED PWM arduino pin for channel two 

int threeLed = 6;     // LED PWM arduino pin for channel three

int fourLed = 9;      // LED PWM arduino pin for channel four

int fiveLed = 10;     // LED PWM arduino pin for channel five

int sixLed = 11;      // LED PWM arduino pin for channel six


#include <WProgram.h>
#include <DS1307.h> 
// written by  mattt on the Arduino forum and modified by D. Sjunnesson



// Set up RTC

#include "Wire.h"

#define DS1307_I2C_ADDRESS 0x68



// RTC variables

byte second, rtcMins, oldMins, rtcHrs, oldHrs, dayOfWeek, dayOfMonth, month, year;



// Other variables. These control the behavior of lighting. Change these to customize behavior.

int minCounter = 0;         // counter that resets at midnight. Don't change this.



int oneStartMins = 540;     // minute to start channel 1. Change this to the number of minutes past midnight you want to start

int twoStartMins =420;      // minute to start channel 2. Change this to the number of minutes past midnight you want to start                         

int threeStartMins =540;    // minute to start channel 3. Change this to the number of minutes past midnight you want to start 

int fourStartMins =420;     // minute to start channel 4. Change this to the number of minutes past midnight you want to start 

int fiveStartMins =420;     // minute to start channel 5. Change this to the number of minutes past midnight you want to start 

int sixStartMins =420;      // minute to start channel 6. Change this to the number of minutes past midnight you want to start 


int onePhotoPeriod = 720;   // photoperiod in minutes, for this channel. Change this to alter the total legnth of the day

int twoPhotoPeriod = 960;   // photoperiod in minutes, for this channel. Change this to alter the total legnth of the day                           

int threePhotoPeriod = 720; // photoperiod in minutes, for this channel. Change this to alter the total legnth of the day

int fourPhotoPeriod = 960;  // photoperiod in minutes, for this channel. Change this to alter the total legnth of the day

int fivePhotoPeriod = 960;  // photoperiod in minutes, for this channel. Change this to alter the total legnth of the day

int sixPhotoPeriod = 960;   // photoperiod in minutes, for this channel. Change this to alter the total legnth of the day


int fadeDuration = 180;      // duration of the fade on and off for sunrise and sunset. Change
                            
//    this to alter how long the fade lasts.

int oneMax = 255;           // max intensity for this channel. Change if you want to limit max intensity.

int twoMax = 255;           // max intensity for this channel. Change if you want to limit max intensity. 

int threeMax = 255;         // max intensity for this channel. Change if you want to limit max intensity.

int fourMax = 255;          // max intensity for this channel. Change if you want to limit max intensity.

int fiveMax = 255;          // max intensity for this channel. Change if you want to limit max intensity.

int sixMax = 255;           // max intensity for this channel. Change if you want to limit max intensity.

/****** LED Functions ******/

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

//function to set LED brightness according to time of day

//function has three equal phases - ramp up, hold, and ramp down

void setLed(int mins,    // current time in minutes
            
int ledPin,  // pin for this channel of LEDs
            
int start,   // start time for this channel of LEDs
            
int period,  // photoperiod for this channel of LEDs
            
int fade,    // fade duration for this channel of LEDs
            
int ledMax   // max value for this channel
            
)  {
  
if (mins <= start || mins <= mins > start + period)  {
    
analogWrite(ledPin, 0);
  
}// This is when the led's are off, thus ledVal =0
  
if (mins > start && mins <= start + fade)  {
    
analogWrite(ledPin, map(mins - start, 0, fade, 0, ledMax));
  
}// This is sunrise. Leds slowly brighten to full intensity
    
if (mins > start + fade && mins <= start + period - fade)  {
   
analogWrite(ledPin, ledMax);
  
}//This is when the led's are at maximum intensity
    
if (mins > start + period - fade && mins <= start + period)  {
    
analogWrite(ledPin, map(mins - start - period + fade, 0, fade, ledMax, 0));
  
}// This is sunset. LEDs slowly fade out.

}



/***** RTC Functions *******/

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

// Convert normal decimal numbers to binary coded decimal

byte decToBcd(byte val)

{
  
return ( (val/10*16) + (val%10) );

}



// Convert binary coded decimal to normal decimal numbers

byte bcdToDec(byte val)

{
  
return ( (val/16*10) + (val%16) );

}



// 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.



/* //remove the forward slash and asterisk at the far left to activate the time date setting code




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_I2C_ADDRESS);
   
Wire.send(0);
   
Wire.send(decToBcd(second));
   
Wire.send(decToBcd(minute));
   
Wire.send(decToBcd(hour));
   Wire.send(decToBcd(dayOfWeek));
   
Wire.send(decToBcd(dayOfMonth));
   
Wire.send(decToBcd(month));
   
Wire.send(decToBcd(year));
   
Wire.endTransmission();
     
                             

}

*/ //remove the forward slash and asterisk at the far left to activate the time date setting code



// Gets the date and time from the ds1307 via the I2C protocol.

void getDateDs1307(byte *second,
          
byte *minute,
          
byte *hour,
          
byte *dayOfWeek,
          
byte *dayOfMonth,
          
byte *month,
          
byte *year)

{
  
Wire.beginTransmission(DS1307_I2C_ADDRESS);
  
Wire.send(0);
  
Wire.endTransmission();

  

Wire.requestFrom(DS1307_I2C_ADDRESS, 7);

  
*second     = bcdToDec(Wire.receive() & 0x7f);
  
*minute     = bcdToDec(Wire.receive());
  
*hour       = bcdToDec(Wire.receive() & 0x3f);
  
*dayOfWeek  = bcdToDec(Wire.receive());
  
*dayOfMonth = bcdToDec(Wire.receive());
  
*month      = bcdToDec(Wire.receive());
  
*year  = bcdToDec(Wire.receive());

}



void setup()  { 
    


// init I2C  
  
Serial.begin(9600);
  
Wire.begin();
} 
// these functions only occur once.



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

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

void loop() { 

 
 
  

// get time from RTC and put in hrs and mins variables
  
getDateDs1307(&second, &rtcMins, &rtcHrs, &dayOfWeek, &dayOfMonth, &month, &year);
  
minCounter = rtcHrs * 60 + rtcMins;
 
Serial.print(RTC.get(DS1307_HR,true)); //read the hour and also update all the values by pushing in true
  
Serial.print(":");
  
Serial.print(RTC.get(DS1307_MIN,false));//read minutes without update (false)
  
Serial.print(":");
  
Serial.print(RTC.get(DS1307_SEC,false));//read seconds
  
Serial.print("      "); // some space for a more happy life
  
Serial.print(RTC.get(DS1307_MTH,false));//read month
  
Serial.print("/");
  
Serial.print(RTC.get(DS1307_DATE,false));//read date
  
Serial.print("/");
  
Serial.print(RTC.get(DS1307_YR,false)); //read year 
  
Serial.println();


//set LED values
  
setLed(minCounter, oneLed, oneStartMins, onePhotoPeriod, fadeDuration, oneMax);
  
setLed(minCounter, twoLed, twoStartMins, twoPhotoPeriod, fadeDuration, twoMax);
  
setLed(minCounter, threeLed, threeStartMins, threePhotoPeriod, fadeDuration, threeMax);
  
setLed(minCounter, fourLed, fourStartMins, fourPhotoPeriod, fadeDuration, fourMax);
 
setLed(minCounter, fiveLed, fiveStartMins, fivePhotoPeriod, fadeDuration, fiveMax);
   
setLed(minCounter, sixLed, sixStartMins, sixPhotoPeriod, fadeDuration, sixMax);
 
// Get ready for next iteration of loop
  
delay(1000);

}
__________________
225 Gal, Glass "Reef Ready" w/ twin Iwaki Pumps & 2 Ocean Clear inline filters. Custom 320 watt LED Lighting system utilizing a 6' Maker's Heat Sink, 12 BridgeLux Vero 18's,3 purpose built 5 channel A6211 Led driver/Controllers, and a 20lb CO2 system w/ Milwaukee Ph Controller.
O2surplus is online now   Reply With Quote