Jump to content

Welcome to Smart Home Forum by FIBARO

Dear Guest,

 

as you can notice parts of Smart Home Forum by FIBARO is not available for you. You have to register in order to view all content and post in our community. Don't worry! Registration is a simple free process that requires minimal information for you to sign up. Become a part of of Smart Home Forum by FIBARO by creating an account.

 

As a member you can:

  •     Start new topics and reply to others
  •     Follow topics and users to get email updates
  •     Get your own profile page and make new friends
  •     Send personal messages
  •     ... and learn a lot about our system!

 

Regards,

Smart Home Forum by FIBARO Team


  • 0

Change Scale of Dimmer (Vera)


Bobone
 Share

Question

Hi! I am a newbie and sorry for asking questions that may be answered elsewhere.

 

I want to control the temperature level of an old boiler by changing the Resistance of an input to it.

Ideally, I could use a Fibaro dimmer(?) to do this by controling a pontentiometer (not sure if this will work).

Two questions:

- how can I  change the scale from "%" to "degrees Celsius"  as viewed in my Vera Plus controller. Reprogramming of Fibaro or Vera? Luup programming?

- what is the output of the dimmer? Less Tension or Current(?) in Rx dimming mode? 

 

Any ideas? Any other component that you would suggest. Can the Fibaro Relay be made into a dimmer?

Thanks,

Bengt

 

ADMIN NOTE:

No need to apologize for asking a question. The Forum is for asking questions ;)

As there is no solution offered by you I moved the topic to a correct forum. Please, read descriptions of forums before posting.

Edited by T.Konopka
Wrong forum.
Link to comment
Share on other sites

3 answers to this question

Recommended Posts

  • 0

The topic has been moved from "

Please login or register to see this link.

" to "

Please login or register to see this link.

".

 

Temat został przeniesiony z "

Please login or register to see this link.

" do "

Please login or register to see this link.

".

Link to comment
Share on other sites

  • 0
4 hours ago, Bobone said:

I want to control the temperature level of an old boiler by changing the Resistance of an input to it.

 

I'm not sure what you want to achieve. What kind of input do you have on the boiler? 0-10V ? 

Or is just simple heater coil with on/off function, where you want to "dim" current  and in that way make heat temperature lower?

 

4 hours ago, Bobone said:

- what is the output of the dimmer? Less Tension or Current(?) in Rx dimming mode? 

 

Dimmer does not changing voltage or current. It's "cutting" a piece of sinusoidal wave of from the alternating current (AC). It can be trailing edge or leading edge of the wave, depends which type of load you have (resistive, capacitive etc,) .Type in google "how dimmer works" and you'll find out.    

 

Keep in mind that max load for dimmer is 200VA or 250W

 

But if you have just simple heating coil with, the best option will be relay switch to power the coil on and off, and temperature sensor inside the boiler, and some programming in the controller. 

Link to comment
Share on other sites

  • 0
  • Inquirer
  • Hi, thank you very much for responding to my newbie post!!!

    (actually I did edit the worst questions, but an old copy was kept on the board)

     

    Anyway, here is what I want to do:

    - simulate an old temperature sensor to the boiler which is resistance based (NTC)

    - wirelessly be able to change the resistance

     

    Two problems:

    - change the scale from "%" to "°C". (Also, the NTC is non linear). The question is if this is best done in the Dimmer or the Vera controller?

    - need to convert a PWM from the Dimmer to a variable resistance (various mosfet ideas exist, nothing clear)

     

    Thanks!

    Bob

    (Note to admin: I don't think that this question should be classified as "newbie".

    Link to comment
    Share on other sites

    Join the conversation

    You can post now and register later. If you have an account, sign in now to post with your account.

    Guest
    Answer this question...

    ×   Pasted as rich text.   Paste as plain text instead

      Only 75 emoji are allowed.

    ×   Your link has been automatically embedded.   Display as a link instead

    ×   Your previous content has been restored.   Clear editor

    ×   You cannot paste images directly. Upload or insert images from URL.

     Share

    ×
    ×
    • Create New...