Tank Ph and CO2 [SOLVED]

[Maciej Kozyra]

Hi.
My name is Maciek and I am new here. Thank you Fernando for your great work with this software. I have built my diy Ferduino controller and now I have begun to use it in my tank. I have sweetwater tank with plants and I use CO2 to change/regulate ph in it. Going to the point I'd like to ask how can I turn on/ off my CO2 when my ph probe is connected to tank ph in the aquarium controller? I think one way is to connect ph probe to ph reactor in controller but in my case this is not optimal sollution because ph on the screen will be reactor ph not tank ph.

[Fernando Garcia]

Hi!

Welcome Maciej!

The more simple way to a newbie is connect to reactor pin and change the texts in A_English tab if you are using english language.

Change PH TANK to CALCIUM REACTOR, CALCIUM REACTOR to PH TANK and REACTOR to DIFFUSER.

Otherwise you can edit the function "void check_PH_aquario()" in the tab "Parametros".

Best regards.

[Maciej Kozyra]

Thanks for your prompt answer. Your idea to change names and pin out from ph tank to ph reactor is the easiest one. So I will try it first. Good work

[Maciej Kozyra]

I have one more question. I have changed ph probe from tank ph to reactor ph and it works but not quite (changing names is not a problem I will do it later). There are good readings of ph on the screen but there is no reaction. Reactor is still of. Desired ph reactor is set to 6.9, variation 0.1 and readings are 7.10 or more but on the screen Reactor is still off. In the global settings reactor is in automatic mode. Do I do something wrong?

[Fernando Garcia]

Hi!

The funcions to read tank pH is enabled on setup and loop?

Comment out this function on setup:

Code: Select all

iniciar_stamp_orp();
iniciar_stamp_ph_aquario();


Comment out this function on loop:

Code: Select all

check_parametro_orp();
check_parametro_ph_aquario();


Best regards.

[Maciej Kozyra]

I haven't changed anything in loop and setup in your original software from 05/02/2016.
In the setup I have:

Code: Select all

#if defined(STAMPS_EZO) || defined(STAMPS_V4X) // Do not change this line!
  iniciar_stamp_ph_reator();    // Lê o pH do reator
  iniciar_stamp_orp();          // Lê a ORP
  // iniciar_stamp_densidade();    // Lê a densidade
  iniciar_stamp_ph_aquario();   // Lê o pH do aquário
#endif // Do not change this line!


In loop the soft looks like:

Code: Select all

#if defined(STAMPS_EZO) || defined(STAMPS_V4X)
  if ((millis() - millis_antes) >= 120000) // Executa as funções a cada 2 minutos.
  {
    check_parametro_ph_reator(); // Verifica os "stamps".
    check_parametro_orp();
    //      check_parametro_densidade();
    check_parametro_ph_aquario();
    millis_antes = millis();
  }
#endif


Best regards

[Maciej Kozyra]

Dear Fernando.

Do you have any other suggestions what to do or what can be wrong?

Best regards

[Fernando Garcia]

Hi!

Did you the changes that I told above?

Best regards.

[Maciej Kozyra]

You have written comment out so I thought that I have to leave those lines without comment - sorry.
I will comment it and let you know.
Best regards

[Maciej Kozyra]

Well I did as you wanted. Now the soft looks like:

Code: Select all

#if defined(STAMPS_EZO) || defined(STAMPS_V4X)
  if ((millis() - millis_antes) >= 120000) // Executa as funções a cada 2 minutos.
  {
    check_parametro_ph_reator(); // Verifica os "stamps".
    //check_parametro_orp();
    //check_parametro_densidade();
    //check_parametro_ph_aquario();
    millis_antes = millis();
  }
#endif


and

Code: Select all

#if defined(STAMPS_EZO) || defined(STAMPS_V4X) // Do not change this line!
  iniciar_stamp_ph_reator();    // Lê o pH do reator
  // iniciar_stamp_orp();          // Lê a ORP - deaktywowano moduł sondy orp
  // iniciar_stamp_densidade();    // Lê a densidade
  // iniciar_stamp_ph_aquario();   // Lê o pH do aquário - deaktywowano moduł sondy ph akwarium
#endif // Do not change this line!


The problem is still the same - no reaction of reactor or ozon off all the time.

[Fernando Garcia]

Comment this lines on loop too:

Code: Select all

    check_PH_aquario();     // Verifica o PH do aquário.
    check_densidade();      // Verifica a densidade.
    check_ORP();            // Verifica o ORP;


Are you using a PCF8575?

[Maciej Kozyra]

Hi Fernando.
I did as you wrote and it works now. Thank you very much.
Reactor turns on like it should do.
Does it mean that if you have only one probe module you have to deactivate other probe functions commenting proper lines of the code like in my case?
I have PCF857 and it works. I had problem to start with this chip because there are no resisitors on your Ferduino Mega blueprint but I found the right sollution and it works now.

Best regards

[Fernando Garcia]

Hi!

Glad to hear!

Does it mean that if you have only one probe module you have to deactivate other probe functions commenting proper lines of the code like in my case?

Is mandatory comment the lines bellow for unused stamps because the controller can hang on start or give strange numbers.

Code: Select all

  iniciar_stamp_ph_reator();    // Lê o pH do reator
  iniciar_stamp_orp();          // Lê a ORP
  iniciar_stamp_densidade();    // Lê a densidade
  iniciar_stamp_ph_aquario();   // Lê o pH do aquário


Code: Select all

    check_parametro_ph_reator(); // Verifica os "stamps".
    check_parametro_orp();
    check_parametro_densidade();
    check_parametro_ph_aquario();


For saltwater is normal use two pH stamps by safety because when the pH on tank is smaller than the desired value the calcium reactor will not work.

In your case with one pH stamp for CO₂ the value for tank pH is always ZERO so, the reactor will stay always OFF therefore, is mandatory to comment the code to check tank pH (the line below).

Code: Select all

check_PH_aquario();     // Verifica o PH do aquário.

For saltwater and freshwater the lines below can stay as it's on code but to freshwater it's useless so can remove.

Code: Select all

    check_densidade();      // Verifica a densidade.
    check_ORP();            // Verifica o ORP;


Best regards.

[Maciej Kozyra]

I thought that it is simpler just compare ph as you want and ph read from probe than on/off reactor or ozonator. Thank you for help and explain how this part of software works. I will owe you a beer if you are in Poland

Best regards