Arduino Aquaponics Controller

adamlwvdc36

Ok, so Im guessing by your reply that yes, I need to incorporate an EEPROM int say "first_run" and then have first_run = EEPROM.readInt(x); and if that is a initial value, load default values and change first_run to 1 in which case the program would run as normal. (there was not attachement)

Question: What would the plain english value be for an EEPROM? Is it 0?

Chiumanfu

Just click on the big red link for the new sketch.

Yes, that is exactly how I did it. Check the EEPROM location designated "first_run". If it is not "1234" then preload the EEPROM values and set first_run to 1234. If it is already 1234 then ignore.

Not sure what you mean by plain english value. The EEPROM values could be anything in a fresh arduino.

adamlwvdc36

Ok, so then instead of if it IS this, then load defaults you said if it's NOT (this specific value), then load defaults. Makes sense.

Looking at code now so as to be able to ask next question in one post (stand by)...

Ok, since I am honestly creating a hybrid of our two codes maybe you can help me on this one.

My system automatically corrects pH. I have values I want to store in the EEPROM for my minimum and maximum pH. I have the logic set. What I want to do (and what Im using your code as a reference to do) is to be able to manipulate these values without having to upload new code everytime. Your code says:

Code:

do {
            key = keypad.waitForKey();
            lcd.noBlink();
            lcd.noCursor();
            if (key >= '0' && key <= '9') {
              keyInput = (keyInput * 10) + (key - '0');
              lcd.setCursor(13, 2);
              lcd.print(keyInput);
            }
          } while (key >= '0' && key <= '9');
          if (key == 'A') {
            relay_light_nightMAX = keyInput;
            EEPROM.updateInt(12, relay_light_nightMAX);

to do an INTEGER, but I need a float or double. how do I make this work? Would

Code:

do {
            key = keypad.waitForKey();
            lcd.noBlink();
            lcd.noCursor();
            if (key >= '0' && key <= '9') {
              keyInput = (keyInput * 10) + (key - '0');
              lcd.setCursor(13, 2);
              lcd.print(keyInput);
            }
          } while (key >= '0' && key <= '9');
          if (key == 'A') {
            relay_light_nightMAX = (keyInput / 100);
            EEPROM.updateFloat(12, relay_light_nightMAX);

work? and then just enter my ph (say, 6.70) as 670?

By the way, I continue to be grateful for both the inspiration and the help.

Chiumanfu

Your code looks correct. Remember that "relay_light_nightMAX" or whatever variable you designate has to be declared as a float. Also, floats take up 4 bytes so the next EEPROM slot is 16.

If it strips the decimal, try dividing by "100.0" which will force the compiler to retain the floating point.

adamlwvdc36

Hey I wanted to halfway show off here. Since it has to do with my ap system this seems like the appropriate place. I put a piece of acrylic in the oven at 300°F for 10 minutes and then formed and drilled it to hold my temp and pH probe. First attempt at it so it's not perfect, but it does the job. No more fully submerged probes and their nicely secured.

bskinner

I am looking for someone to partner with us to help develop control systems that will work in our systems both hydro and aqua that that are operated by solar, wind and hydro electric for the USA and 3rd world countries. If you have expertise and interest please reply. Thanks Bill

lost_bro

Hello Chiunmanfu

"$25 for 10 pcbs. Not too bad. I only need one set so the other 9 sets will go to whoever might be interested. "

Please put me down for a set of your pcbs. I have been following the thread since the beginning and am really impressed with your effort. Just let me know what I need to do concerning the payment.

Thanks
lost_bro

Chiumanfu

Lost_bro. I'll save you a set. I still have to test the power board. My job got really busy and I'm not looking forward to rewiring all that AC. Sorry it's taking so long.

garyalan59

Instead of uploading data to the cloud (GroveStreams), what would it take to just append the data to a text file or Excel spreadsheet?

adamlwvdc36

In short, set up the program to write to a file and then do a file print just like a client print or serial print. Csv files work best all you have to do is add a header to the file with each parameter with a comma in between, then print the data separated by a comma. Then end it with either a new line command after each entry. There are several examples online.

lost_bro

Chiumanfu wrote:

Lost_bro. I'll save you a set. I still have to test the power board. My job got really busy and I'm not looking forward to rewiring all that AC. Sorry it's taking so long.

Thanks Chiumanfu.....

Just let me know how and when, I'm in no hurry as I understand how R&D can be very time consuming.

take care , peace
lost_bro

Chiumanfu

garyalan59 wrote:

Instead of uploading data to the cloud (GroveStreams), what would it take to just append the data to a text file or Excel spreadsheet?

This is actually quite simple. You would write the values as comma separated variable onto an SD card. There is an SD card slot already on the Ethernet module and the library is very simple.

There is a bunch of examples here. Take a look at the datalogger example.
https://www.arduino.cc/en/Reference/SD

When you want to look at the data, you just pull the SD card and import the files to excel or whatever visualization program you're using.

rodeo_clown

Hey Chiumanfu, if you have spare pcbs, can i buy a set off you?

Mick3029

Chiu, I would also be keen to purchase a set of the PCB's if you have any spare this time around or in future if you do another run

Cheers

Mick

boss

adamlwvdc36 wrote:

Hey I wanted to halfway show off here. Since it has to do with my ap system this seems like the appropriate place. I put a piece of acrylic in the oven at 300°F for 10 minutes and then formed and drilled it to hold my temp and pH probe. First attempt at it so it's not perfect, but it does the job. No more fully submerged probes and their nicely secured.

Nice work fabricating the bracket. You've got form and function balanced perfectly

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Arduino Aquaponics Controller

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A place to discuss aquaponics