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Topic: Potted plant watering system. (Involves water pumps.) (Read 12984 times) previous topic - next topic

lost_and_confused

Jul 01, 2012, 03:16 am Last Edit: Jul 15, 2012, 07:15 am by CrossRoads Reason: 1
Mr Google hasn't been too helpful, so I thought I would ask here.

Although I am still working on a project, the next one is raising its head.

Watering plants.  Not rocket science, I know.

My "situation" is that I have a "reserve" of water in a tank and I have 5 plants/pots.  Different sizes/different needs for amount of water per pot.

My basic idea was to have a daily/set period to water them.

Call it daily only for simplicity.

Each day, the unit checks there is water in the tank, turns on a pump, opens solenoid 1 for x seconds, repeats for 2 to 5 then shuts down.

It doesn't need to be "high pressure" water, and a valve would be included so the water line could "vent" back into the tank if the line pressure was too high.

There would also be a "rain detector" so if it is "bucketing down" it doesn't water the plants.

When the water level gets below a certain point, it lights an LED and I know it is time to fill the tank again.


florinc

Nice. Did you select the parts (pump, sensors etc)?

lost_and_confused

No not yet.

I am trying (yeah, right) to keep it simple.

Basically there will be a pump; 5 (unless I get more pots) solenoids; a vent valve and a rain sensor.
Oh, sorry:  And an LED.

Sensors?  You mean for the rain detection?  No not yet.  Don't know how to detect rain electronically yet.


florinc

Quote
You mean for the rain detection?

If this is for outdoors, then why not use a sprinkler-kind-of-system powered on a timer?

lost_and_confused

The pots are "local" to me, and though are out doors, are not in a garden as such.

They are undercover and there is no way I can use sprinklers to water them.  Too wasteful.

This way I am using the water I gather (GREY water as it is called) and using it to water the plants if/when they need it.

Reading another thread, maybe instead of "rain detection" I put sensors in the pots with detect the moisture of the soil.
Basically two nails.  One to +5v, and the other an analogue input.

I'm still scoping the idea.

zoomkat

Previous similar post for reading.

https://www.google.com/search?hl=en&as_q=hydroponics&as_epq=&as_oq=&as_eq=&as_nlo=&as_nhi=&lr=&cr=&as_qdr=all&as_sitesearch=http%3A%2F%2Farduino.cc%2Fforum&as_occt=any&safe=off&tbs=&as_filetype=&as_rights=
Google forum search: Use Google Advanced Search and use Http://forum.arduino.cc/index in the "site or domain:" box.

lost_and_confused

Thanks.

I didn't think of "hydroponics" for the search.

lost_and_confused

Ok, I am trying to optimise the code loops.

Here is what I am wanting to do:

I have 5 outputs, and they are called solenoid_1 - 5.

I have read the 5 values in for their run times, and want to make a loop to turn them on/off by doing a

for i = 1 to 5
digitalwrite(solenoid_i,HIGH)
next

kind of thing.

or the real code:

Code: [Select]

void Solenoid()
{
    //
    for (int i=0;i<5;i++)
    {
        //  Get time value for i
        //  Turn on soldenoid i
        //  Wait the specified time
        //  Check sensor for input
        //  Abort if active
        //  Turn off solenoid i
        digitalwrite(solenoid_
    }
}


But I am stumped how to translate the "i" into the command.

I know I have been through this similar thing with printing things on the display with the sprintf(), but don't know if that works with this situation.

Please.

MichaelMeissner

#8
Jul 15, 2012, 04:01 am Last Edit: Jul 15, 2012, 04:05 am by MichaelMeissner Reason: 1
Check out arrays in the learning section: http://arduino.cc/en/Tutorial/Array.

BTW, you probably could have chosen a better title, such as 'Potted plant watering system', since 'Pot plant watering system' says to me the growing of marijuana.  Even if that is what is in your potted plants, it may have limited the responses.

lost_and_confused

#9
Jul 15, 2012, 06:54 am Last Edit: Jul 15, 2012, 07:03 am by lost_and_confused Reason: 1
Thanks.

I've looked and thought I had it.

This is driving me nuts.

Ok, so I make it read something like:
digitalWrite(solenoid_,LOW);

and it should work.

SHOULD!

This is my code now:

Code: [Select]

/*
   Automamtic plant pot watering system.
   
   Concept:
   Daily or weekly it waters plant pots.
   Sensors detect if the saucer under the pot is
   full or not, and stop the pump when it detects
   the water depth.
   There is also a "timeout" period per pot incase
   there is a problem with filling the pot.
   
*/

#include <arduino.h>
#include <Wire.h>
#include <stdio.h>
#include "DS1307_1.h"
#include "alarm_clock.h"


//  These are the sensors for each pot and the main reserve
#define sensor_Main 14
#define sensor_1 15
#define sensor_2 16
#define sensor_3 17
#define sensor_4 18
#define sensor_5 19



//  These are the pins to drive each solenoid for each pot.
//  They are OR'd together to turn on the motor/pump.
int solenoin[5];
#define solenoid_1 0
#define solenoid_2 1
#define solenoid_3 2
#define solenoid_4 3
#define solenoid_5 4



#define LED 5
#define btn_1 6

//  Set time for daily run.
//int run_time_dow 2;
int run_time_hr = 12;
int run_time_mn = 00;
//int run_time_sec = 00;

//  Array for each pot's fill time
int sol_run_time[5];
//  Array for the values for the system to look for to indicate "full"
int level[6];

// RTC stuff
int rtc[7];
DS1307 RTC=DS1307();             // Create RTC object


//#define setRTC
#ifdef setRTC
// Set/init RTC
 RTC.stop();
 RTC.set(DS1307_SEC,0);
 RTC.set(DS1307_MIN,50);
 RTC.set(DS1307_HR,0);
 RTC.set(DS1307_DOW,3);           // value from 1 to 7. User define whether 1 is sun or mon.
 RTC.set(DS1307_DATE,10);
 RTC.set(DS1307_MTH,06);
 RTC.set(DS1307_YR,12);
 RTC.start();
#endif


void setup()
{
   //
   pinMode(sensor_Main,INPUT);
   pinMode(sensor_1,INPUT);
   pinMode(sensor_2,INPUT);
   pinMode(sensor_3,INPUT);
   pinMode(sensor_4,INPUT);
   pinMode(sensor_5,INPUT);

   pinMode(btn_1,INPUT);    
   
   pinMode(solenoid_1,OUTPUT);
   pinMode(solenoid_2,OUTPUT);
   pinMode(solenoid_3,OUTPUT);
   pinMode(solenoid_4,OUTPUT);
   pinMode(solenoid_5,OUTPUT);

   pinMode(LED,OUTPUT);
   
   digitalWrite(LED,LOW);
   digitalWrite(solenoid_1,LOW);
   digitalWrite(solenoid_2,LOW);
   digitalWrite(solenoid_3,LOW);
   digitalWrite(solenoid_4,LOW);
   digitalWrite(solenoid_5,LOW);

   // Time in seconds each pot takes to be "filled".
   //  All values to be set.
   sol_run_time[1] = 20;
   sol_run_time[2] = 20;
   sol_run_time[3] = 20;
   sol_run_time[4] = 20;
   sol_run_time[5] = 20;
   
   //  All values to be set.
   level[1] = 20;
   level[2] = 20;
   level[3] = 20;
   level[4] = 20;
   level[5] = 20;
   level[6] = 20;      //  This will be the main reserve, and when it is empty rather than full.

}

void loop()
{
   //  Get time from RTC.
   int rtc[7];
   RTC.get(rtc,true);
   int flag;
   //  Have time, check what time it is.
   if (btn_1 == HIGH)
   {
       Solenoid();
   }
   //
   if (rtc[2] == run_time_hr)
   {
       if (rtc[1] == run_time_mn)
       {
           if (flag == 0)
           {
               //
               Solenoid();
               flag = 1;
           }
       }
   }
   
}

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

void Solenoid()
{
   int i;
   for (i=0;i<5;i++)
   {
       //  Get time value for i
       //  Turn on soldenoid i
       //  Wait the specified time
       //  Check sensor for input
       //  Abort if active
       //  Turn off solenoid i
       digitalWrite(solenoid_[i],HIGH);
       sensor_delay(i);
   }
}

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

int sensor_delay(int x)
{
   //  Read threashold values for all sensors.
   //  i is current one, but Main gets read every time anyway.
   int i = x;
   int reading;
   int TTG;
   int time_up;
   TTG = sol_run_time[i];
   time_up = timer(TTG);
   if (time_up > 0)
   {
       reading = digitalRead(sensor_Main);
       if (reading > level[6])      //  Main reserve is good.
       {
           reading = digitalRead(sesnor_[i]);
           if (reading > level[i])
           {
               //  Water level reached.  Stop pumping and go to next plant.
               TTG = 0;
               digitalWrite(solenoid_[i],LOW);
           }
           //  This is if the plant's water is already good
       }
       //  This is if the main level is not good.
   }
   // time_up = 0
}
return;
   
//*************************************************************************************************
   
int timer(int foo)
{
   static int counter;
   counter = foo;
   int rtc[7];
   int min_flag;
   RTC.get(rtc,true);
       if (counter >0)
       {
          if (min_flag != rtc[1])
          {
              min_flag = rtc[1];
              counter = counter - 1;
          }
       }
   return counter;
}

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



It given me errors.

What really annoys/upsets me is I am still missing what is going on.

I can be writing away and it complies.   Haven't even got to testing it yet.  I do some small changes, and it just falls over in a big heap.

Errors everywhere.

V1.cpp: In function 'void Solenoid()':
V1:160: error: 'solenoid_' was not declared in this scope
V1.cpp: In function 'int sensor_delay(int)':
V1:182: error: 'sesnor_' was not declared in this scope
V1:187: error: 'solenoid_' was not declared in this scope
V1.cpp: At global scope:
V1:195: error: expected unqualified-id before 'return'

Ok:
'solenoid_ was not declared in this scope.'

Yeah, because I changed it from solenoid_[1] to solenoid_


See this PART of the code referred below:

Code: [Select]

void loop() {
 // loop from the lowest pin to the highest:
 for (int thisPin = 0; thisPin < pinCount; thisPin++) {
   // turn the pin on:
   digitalWrite(ledPins[thisPin], HIGH);  
   delay(timer);                  
   // turn the pin off:
   digitalWrite(ledPins[thisPin], LOW);    


Here, [thisPin] is used instead of the [ i ] which I am using in the case.  (Spaces optional and added only to make visible.)

I hope I have obeyed the rules, but it doesn't seem to like me.


PaulS

There is a world of difference between
Code: [Select]
         digitalWrite(solenoid_[i],HIGH);
and
Code: [Select]
    digitalWrite(ledPins[thisPin], HIGH); 

The compiler converts names to addresses. Then, it discards the names. There is nothing in the hex file that gets uploaded to the Arduino that is called solenoid_ anything.

You can create an array of pins that the solenoids are attached to (solenoidPins[]), similar to ledPins[] in the code that works, and then use
Code: [Select]
         digitalWrite(solenoidPins[i],HIGH);

wildbill

Repeating what I suggested in a prior similar thread:

Consider raising the captured water container so you can use gravity feed. Then you can dispense with level detection and the pump.

lost_and_confused


There is a world of difference between
Code: [Select]
         digitalWrite(solenoid_[i],HIGH);
and
Code: [Select]
    digitalWrite(ledPins[thisPin], HIGH); 

The compiler converts names to addresses. Then, it discards the names. There is nothing in the hex file that gets uploaded to the Arduino that is called solenoid_ anything.

You can create an array of pins that the solenoids are attached to (solenoidPins[]), similar to ledPins[] in the code that works, and then use
Code: [Select]
         digitalWrite(solenoidPins[i],HIGH);



So this _ character makes a big difference?

I was starting to think along those lines, but had not got around to checking myself on it.

Thanks for the info.

WRT lifting the water and using gravity:
Well, nice idea, but it is a LOT of water.  Probably 100 Litres or more.  That is a lot of weight to eleveate.  That means making a support for the container and all that kind of stufff.

Thanks, but for now I am wanting to concentrate on the programming side of things and not have to get too muchh into the mechanical side of building "structures" to support 100KG of water above a certain height.

lost_and_confused

#13
Jul 17, 2012, 10:03 am Last Edit: Jul 17, 2012, 10:23 am by lost_and_confused Reason: 1
Well,

"I give up".

Here is what I did:

Code: [Select]

//  Array for each pot's fill time
int sol_run_time[5];
//  Array for the values for the system to look for to indicate "full"
int level[6];
//  Solenoid array
int solenoid[5];
//  Sensor array
int sensor[6];


//  These are the sensors for each pot and the main reserve
#define sensor[0] 14
#define sensor[1] 15
#define sensor[2] 16
#define sensor[3] 17
#define sensor[4] 18
#define sensor[5] 19



//  These are the pins to drive each solenoid for each pot.
//  They are OR'd together to turn on the motor/pump.
//int solenoid[5];
#define solenoid[1] 0
#define solenoid[2] 1
#define solenoid[3] 2
#define solenoid[4] 3
#define solenoid[5] 4



#define LED 5
#define btn_1 6

//  Set time for daily run.
//int run_time_dow 2;
int run_time_hr = 12;
int run_time_mn = 00;
//int run_time_sec = 00;

// RTC stuff
int rtc[7];
DS1307 RTC=DS1307();             // Create RTC object


//#define setRTC
#ifdef setRTC
// Set/init RTC
 RTC.stop();
 RTC.set(DS1307_SEC,0);
 RTC.set(DS1307_MIN,50);
 RTC.set(DS1307_HR,0);
 RTC.set(DS1307_DOW,3);           // value from 1 to 7. User define whether 1 is sun or mon.
 RTC.set(DS1307_DATE,10);
 RTC.set(DS1307_MTH,06);
 RTC.set(DS1307_YR,12);
 RTC.start();
#endif


void setup()
{
   //
   pinMode(sensor[0],INPUT);
   pinMode(sensor[1],INPUT);
   pinMode(sensor[2],INPUT);
   pinMode(sensor[3],INPUT);
   pinMode(sensor[4],INPUT);
   pinMode(sensor[5],INPUT);

The rest is not included.

Still fails.

V1.cpp: In function 'void setup()':
V1:83: error: expected primary-expression before '[' token
V1:84: error: expected primary-expression before '[' token
V1:85: error: expected primary-expression before '[' token
V1:86: error: expected primary-expression before '[' token


So I am really missing something.


Hang on!

Ok, "Pins" is missing in the text.

Changing now.



lost_and_confused

Eurika!

Is this it?

Code: [Select]

/*
    Automamtic plant pot watering system.
   
    Concept:
    Daily or weekly it waters plant pots.
    Sensors detect if the saucer under the pot is
    full or not, and stop the pump when it detects
    the water depth.
    There is also a "timeout" period per pot incase
    there is a problem with filling the pot.
   
*/

#include <arduino.h>
#include <Wire.h>
#include <stdio.h>
#include "DS1307_1.h"
#include "alarm_clock.h"


//  Array for each pot's fill time
int sol_run_time[5];
//  Array for the values for the system to look for to indicate "full"
int level[6];
//  Solenoid array
int solenoid[5];
//  Sensor array
int sensor[6];


//  These are the sensors for each pot and the main reserve
#define sensorPins[0] 14
#define sensorPins[1] 15
#define sensorPins[2] 16
#define sensorPins[3] 17
#define sensorPins[4] 18
#define sensorPins[5] 19



//  These are the pins to drive each solenoid for each pot.
//  They are OR'd together to turn on the motor/pump.
//int solenoid[5];
#define solenoidPins[1] 0
#define solenoidPins[2] 1
#define solenoidPins[3] 2
#define solenoidPins[4] 3
#define solenoidPins[5] 4



#define LED 5
#define btn_1 6

//  Set time for daily run.
//int run_time_dow 2;
int run_time_hr = 12;
int run_time_mn = 00;
//int run_time_sec = 00;

// RTC stuff
int rtc[7];
DS1307 RTC=DS1307();             // Create RTC object


//#define setRTC
#ifdef setRTC
// Set/init RTC
  RTC.stop();
  RTC.set(DS1307_SEC,0);
  RTC.set(DS1307_MIN,50);
  RTC.set(DS1307_HR,0);
  RTC.set(DS1307_DOW,3);           // value from 1 to 7. User define whether 1 is sun or mon.
  RTC.set(DS1307_DATE,10);
  RTC.set(DS1307_MTH,06);
  RTC.set(DS1307_YR,12);
  RTC.start();
#endif


void setup()
{
    //
    pinMode(sensor[0],INPUT);
    pinMode(sensor[1],INPUT);
    pinMode(sensor[2],INPUT);
    pinMode(sensor[3],INPUT);
    pinMode(sensor[4],INPUT);
    pinMode(sensor[5],INPUT);

    pinMode(btn_1,INPUT);   
   
    pinMode(solenoid[1],OUTPUT);
    pinMode(solenoid[2],OUTPUT);
    pinMode(solenoid[3],OUTPUT);
    pinMode(solenoid[4],OUTPUT);
    pinMode(solenoid[5],OUTPUT);

    pinMode(LED,OUTPUT);
   
    digitalWrite(LED,LOW);
    digitalWrite(solenoid[1],LOW);
    digitalWrite(solenoid[2],LOW);
    digitalWrite(solenoid[3],LOW);
    digitalWrite(solenoid[4],LOW);
    digitalWrite(solenoid[5],LOW);

    // Time in seconds each pot takes to be "filled".
    //  All values to be set.
    sol_run_time[1] = 20;
    sol_run_time[2] = 20;
    sol_run_time[3] = 20;
    sol_run_time[4] = 20;
    sol_run_time[5] = 20;
   
    //  All values to be set.
    level[1] = 20;
    level[2] = 20;
    level[3] = 20;
    level[4] = 20;
    level[5] = 20;
    level[6] = 20;      //  This will be the main reserve, and when it is empty rather than full.

}

void loop()
{
    //  Get time from RTC.
    int rtc[7];
    RTC.get(rtc,true);
    int flag;
    //  Have time, check what time it is.
    if (btn_1 == HIGH)
    {
        Solenoid();
    }
    //
    if (rtc[2] == run_time_hr)
    {
        if (rtc[1] == run_time_mn)
        {
            if (flag == 0)
            {
                //
                Solenoid();
                flag = 1;
            }
        }
    }
   
}

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

void Solenoid()
{
    int i;
    for (i=0;i<5;i++)
    {
        //  Get time value for i
        //  Turn on soldenoid i
        //  Wait the specified time
        //  Check sensor for input
        //  Abort if active
        //  Turn off solenoid i
        digitalWrite(solenoid[i],HIGH);
        sensor_delay(i);
    }
}

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

int sensor_delay(int x)
{
    //  Read threashold values for all sensors.
    //  i is current one, but Main gets read every time anyway.
    int i = x;
    int reading;
    int TTG;
    int time_up;
    TTG = sol_run_time[i];
    time_up = timer(TTG);
    if (time_up > 0)
    {
        reading = digitalRead(sensor[0]);
        if (reading > level[6])      //  Main reserve is good.
        {
            reading = digitalRead(sensor[i]);
            if (reading > level[i])
            {
                //  Water level reached.  Stop pumping and go to next plant.
                TTG = 0;
                digitalWrite(solenoid[i],LOW);
            }
            //  This is if the plant's water is already good
        }
        //  This is if the main level is not good.
    }
    // time_up = 0
}
//return 0;
   
//*************************************************************************************************
   
int timer(int foo)
{
    static int counter;
    counter = foo;
    int rtc[7];
    int min_flag;
    RTC.get(rtc,true);
        if (counter >0)
        {
           if (min_flag != rtc[1])
           {
               min_flag = rtc[1];
               counter = counter - 1;
           }
        }
    return counter;
}

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


It complies ok.


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