aquaponic light and pump loop help

hello guys , in advance,

i in process of setting small aquaponic system. have arduino nano , sainsmart ssr board, understand schematics hook board however, haveing trouble setting arduino like. need arduino set pin high 2 minutes go low 3 3 times go low 45 minutes. kicker while doing need run analog read on photocell , turn pin high or low based on photocell reading. did use blink without delay , modified it. added second interval pin go low different amount of time high. got frusterated because wouldnot work. decided post on here direction or if im lucky code can modify

thanks again guys

this far got , notice need syntax too







const int pumppin =  13;     
int pumpstate = low;           
long previousmillis = 0;       
long interval1 = 12000;
long interval2 = 18000;
long interval3 = 27000;

void setup() {

  pinmode(pumppin, output);     
}

void loop()

  {
  unsigned long currentmillis = millis();

  if(currentmillis - previousmillis > interval1) {
    previousmillis = currentmillis;   

   
    if (pumpstate == low)
      pumpstate = high;
    else
      pumpstate = low;
    digitalwrite(pumppin, pumpstate);
  }

 
 
{
   
  unsigned long currentmillis = millis();

  if(currentmillis - previousmillis > interval2) {
    previousmillis = currentmillis;   

   
    if (pumpstate==low)
      pumpstate = high;
    else
      pumpstate = low;
    digitalwrite(pumppin, pumpstate);
  }

quote

you notice need syntax too

you need understand use of  {   and } brackets define groups of statements go together.

this:

code: [select]

  unsigned long currentmillis = millis();

  if(currentmillis - previousmillis > interval1) {
    previousmillis = currentmillis;   

   
    if (pumpstate == low)
      pumpstate = high;
    else
      pumpstate = low;                       // these 2 statements not grouped together
    digitalwrite(pumppin, pumpstate);
  }

does not work because not controlling statements go together...

try kind of structure:

code: [select]


  unsigned long currentmillis = millis();

  if(currentmillis - previousmillis > interval1)

{  // if interval has ended 
    previousmillis = currentmillis;   

   
    if (pumpstate == low)
   {
      pumpstate = high; 
     digitalwrite(pumppin, pumpstate);   // maybe trying ??
   }

  } // end of if interval has ended 


maybe @ example of starting program structure:
http://arduino-info.wikispaces.com/yourduinostarter_sketchtemplate

Arduino Forum > Using Arduino > Project Guidance > aquaponic light and pump loop help

arduino