Forum Hardware Modules Relay board - Relay box Help with Relays-2

Help with Relays-2  [SOLVED]


Post Number:#1 Post Fri Feb 02, 2018 8:02 pm
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Hi Fernando,
I'm trying to wire the relay-2 but I can not. can you help me? I have doubts about where to connect the 5v and 12v on the relay.
I have to feed ferduino mega with the 12v?
Thank you

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Post Number:#2 Post Fri Feb 02, 2018 9:13 pm
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Hi!

What's the specification for this board?

The relay works with 5 v or 12 v?

You can power the Ferduino M. with 12V, but have to add a fan to cooling the 5 v regulator.

Best regards.
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Post Number:#3 Post Sat Feb 03, 2018 4:06 am
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It should be 5v


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Post Number:#4 Post Sat Feb 03, 2018 10:14 am
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Hi!

Connect 5 V to VCC, GND to GND, P0 to IN1, ..., P6 to IN7 and P7 to IN8.

Best regards.
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Post Number:#5 Post Sat Feb 03, 2018 8:16 pm
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hi!
I tried to do as you told me, but the relay remains off.
I took some pictures.
do I have to change the code?

Image


Image


Image


thank you!
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Post Number:#6 Post Sat Feb 03, 2018 8:49 pm
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The wiring seems wrong to me.

Check the pin map again: http://ferduino.com/wp-content/uploads/ ... PinMap.pdf

Also try first with test code for PCF8575 available on forum.
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Post Number:#7 Post Sun Feb 04, 2018 12:32 pm
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This relay board is low or high level trigger?
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Post Number:#8 Post Sun Feb 04, 2018 3:15 pm
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high level trigger!
I used another one (not solid state) and it works.
Is there a way to use those high-level solid state?

now I would like to use one of the pins available on the pcf8575 (I think 13, 14, 15) for the heater.
Should I just replace the pin number on the line "const byte aquecedorPin = 42; // Pino que liga or aquecedor" or do I have to do anything else?
I also noticed that on the LCD the heater(riscaldatore) is always on even if the temperature of the probe is over 26 degrees. It's correct?

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Post Number:#9 Post Sun Feb 04, 2018 3:56 pm
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To use a high level trigger (active high) you should remove the ULN2803 as explained here: viewtopic.php?f=6&t=100

Should I just replace the pin number on the line "const byte aquecedorPin = 42; // Pino que liga or aquecedor" or do I have to do anything else?


Is needed change other lines. This SSR is rated in 2 Amper it's enough for your heater?

I also noticed that on the LCD the heater(riscaldatore) is always on even if the temperature of the probe is over 26 degrees. It's correct?


Not, you are doing something wrong because heater and chiller can't stay ON simultaneously.

Default code prevents this behaviour.

    if ((bitRead(status_parametros, 0) == true) &&  (bitRead(status_parametros, 1) == true)) // Evita aquecedor e chiller ligados ao mesmo tempo.
    {
      bitWrite(status_parametros, 0, 0);
      bitWrite(status_parametros, 1, 0);
      myDigitalWrite(aquecedorPin, LOW);
      myDigitalWrite(chillerPin, LOW);
}
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Post Number:#10 Post Sun Feb 04, 2018 4:47 pm
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thanks Fernando,
I decided to use another relay which is 10a. can you explain to me what I have to change?
for the problem of the heater and the chillers that go together. I installed the code without any changes but the problem remains.
what can it be? I also disconnected the probes.
thank you

Post Number:#11 Post Sun Feb 04, 2018 6:56 pm
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I do not know why but I set again the temperate and now it goes

Post Number:#12 Post Mon Feb 05, 2018 6:39 am
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Hi!

Remove this line from setup:

myPinMode(aquecedorPin, OUTPUT);


Change all lines like this:

myDigitalWrite(aquecedorPin, HIGH);
myDigitalWrite(aquecedorPin, LOW);


To:

PCF8575.digitalWrite(aquecedorPin, HIGH);
PCF8575.digitalWrite(aquecedorPin, LOW);


Change:

const byte aquecedorPin = 42;


To:

const byte aquecedorPin = 13;


Best regards.
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Post Number:#13 Post Mon Feb 05, 2018 7:31 pm
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thank you! it works perfectly.
now I was trying the pin for the skimmer but I can not make it work.
it should be pin 12 but it is always off.
Do I have to make any changes?
I would like to make it work with the sensor that turns it off if it goes up the sump level.
which sensor uses this function? looking in the code I understand that the sensor 3 but I think it is also the same that turns on the pump of the recovery tank (see from the LCD).
it's correct?
thank you!

Post Number:#14 Post Tue Feb 06, 2018 8:23 am
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Hi!

Just uncomment this line:

//#define DISABLE_SKIMMER


Best regards
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Post Number:#15 Post Tue Feb 06, 2018 11:10 am
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thanks Fernando. it works great.
I'm studying the settings of all the pins. I
have doubts about the pin "bomba1Pin = 2; // P2 // Bomba que tirágua da quarentena" and "Bomba que coloca água no sump". Do they have any automatism? they remain off.
I think it has one of the two to connect the return pump from the sump to the aquarium.
I also doubt the wave maker pumps. I'm using two jebao Sw-4s. is it possible to modify them to make them function in pwm like jebao-wp? otherwise I can connect them to relay-2 and control them with the output?

Post Number:#16 Post Tue Feb 06, 2018 11:29 am
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Do they have any automatism?


Just search for "bomba1Pin" on code to find related function.

There's many topics here talking about partial water change please search a bit.

Friend, I think the initial issue was solved for others questions please create a new topic.
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