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Using a Raspberry PI to replace a water heater temperature controller

Posted: Wed Jul 01, 2020 10:10 am
by alenguav
Hello,
I started this thread in the beginers forum @viewtopic.php?f=91&t=278748
but when I tried to add more information I noticed the thread was locked so I was wondering if I can add continue
the conversation here.

This picture https://www.dropbox.com/s/bs6a0vkivrbvk ... 4.jpg?dl=0
belongs to the sensor the is inserted inside the water tank.

And my final goal is to replace this device with a Raspberry PI
https://www.dropbox.com/s/c8wsfembmitrg ... 3.jpg?dl=0
https://www.dropbox.com/s/v53oitp64bdzj ... m.jpg?dl=0

Re: Using a Raspberry PI to replace a water heater temperature controller

Posted: Wed Jul 01, 2020 10:26 am
by pcmanbob
As we don't know the electrical specifications of the sensor in question, its impossible for anyone to say whether you could connect it to your pi or not , but I suspect if it was possible you would need an interfacing driver chip to do it.

Re: Using a Raspberry PI to replace a water heater temperature controller

Posted: Wed Jul 01, 2020 10:38 am
by alenguav
Here you can see the external connectors of the water tank that are linked to the water temperature meter and the resistance power.

https://www.dropbox.com/s/c26v8sh9ndwl0 ... 0.jpg?dl=0

Re: Using a Raspberry PI to replace a water heater temperature controller

Posted: Wed Jul 01, 2020 10:50 am
by pcmanbob
Which tells us you are using a black,blue and green&yellow coloured wires .

But nothing else.

As you don't seem to be able to grasp the fact that you need to know electrical specifications ( ie operating voltage, output signal type etc )
I would say this project is beyond you skill level.

and as this device appears to not only read temperature but also control pump/circulation I would not consider a pi suitable for doing this unless you could design the system so that it would be fail safe in the even of the pi failing.


Your original thread was closed because people did not like the dangerous electrical installation , I suspect this thread will go the same way.

Re: Using a Raspberry PI to replace a water heater temperature controller

Posted: Wed Jul 01, 2020 10:55 am
by drgeoff
The other thread was locked because the only people who will give you advice other than "don't" are those who have as little appreciation of the danger as you have.

I make no apology if that offends you. I much prefer you to be offended than dead.

Re: Using a Raspberry PI to replace a water heater temperature controller

Posted: Wed Jul 01, 2020 12:17 pm
by mahjongg
alenguav wrote:
Wed Jul 01, 2020 10:10 am
Hello,
I started this thread in the beginers forum @viewtopic.php?f=91&t=278748
but when I tried to add more information I noticed the thread was locked so I was wondering if I can add continue
the conversation here.
Wasn't locking the thread NOT enough of a hint that the Raspberry PI foundation doesn't want to help in electrocuting yourself?

And NO, if a thread is locked, its unacceptable to start a new thread elsewhere, in fact its NEVER acceptable to start a duplicate thread period!
If you want a thread moved, just ask a moderator to do it for you, (use the flag icon to notice a moderator).
So consider yourself banned (for a week) for this stunt.