I have a kitchen LED bar wich is connected to a nice 12V switch in a perfect position. Now as my Smarthome plans are rising I want to “smartify” that little switch. Means I want to still use the switch in the kitchen but also want to switch it off from the couch.
Don’t know why but I am unable to find a proper solution… I have a HmIP-FSI16 laying around, as far as I understood it does exactly what I need, but only if the switch would be a 230V switch?!. I cannot find any alternative allowing me to use a low voltage switch.
Do you have any recommendations? I cant believe that this seems to be an unusual usecase??!?
ps: if somehow possible I don’t want to use a battery driven device, since I have 230V an 12V available and see no need in remembering changing the battery in 3-5 years.
You could use a Shelly or Sonoff mini.
They have input switches.
But that means you need to rewire it.
Connect the lifts to always be on, (remove switch).
Then add the Sonoff/Shelly on 230 side and connect the switch to the Sonoff/Shelly.
That’s the best I could do on the phone.
Other possibility is to build something with an ESP and a relay and switch the 12 volt side.
It’s pretty much the same thing but not packaged in a box.
wow that was fast and also including custom graphics! Thank you all for the ideas.
I will not risk to change the switch to 230V since I have no clue if it would be save or not. (I dont know the Switch, as it was already installed by the pre owner.
I found the Sonoff too, but did not understand how you integrate the switch into the circuit?
The shelly sounds like a great option, I may have overread the 12V capabilities here…
With this info I ask myself where is the difference between the Shelly 1 and the HomematicIP FSI16, beside the 1/5 cost and the additional 12V capabilities? I may can save a lot of money here
As I am relatively new to the new age of smart home… what would you prefere? I know this is going off topic here but now I am curious. I started with Homematic IP because the old owner already installed a bunch of floor heating thermostats from HomematicIP.
The light switch will be my first HA project to get it startet. => High Wife acceptance factor if we can switch that light from the couch
You won’t have to replace/change it.
All you do is to wire it as if the lights would be permanently on.
Then wire the switch to the Sonoff/Shelly.
These wires will not have any voltage or current (not noticeably), they are just there to sense if there is contact or not.
Like the beeper mode on the multimeter.
This scheme looks also like a good solution (and compared to the other sonoff boards in a nice box; I do not like the free circuit boards ). I already ordered a Shelly 1. But I will keep this as a backup plan!
As I understood, I could use the full AC power for the Sonoff and then use the switch without any current. It would not be super perfect to cut the power plug wires but would be okay.
You got it correctly.
But most of the times you can do it without cutting.
The wires come from somewhere and if that is not too far away then you just put it at that position by adding wires (usually behind somewhere or above something in a kitchen).
But the Shelly does have benefits that it works on 12 volts
thank you again for your help! The Shelly 1 arrived and works like a charm. The WAF is good, so this is the perfect introduction into several automation projects
To complete this Thread, this is how I wired the Shelly1 after I jumpered it to run on 12V DC:
). I already ordered a Shelly 1. But I will keep this as a backup plan!
