"in-wall" switch and "in-ceiling" relay... advice please :)
I am designing an in-wall switch to suit my needs :
- a touch-switch with relay (to control lighting) from a single location
- a touch-switch without relay (sending ON/OFF command to the gateway) so i can expand the previous design to a 2-way, 3-way, x-way system
My house has been built in the late 70's... meaning the wall boxes are fairly shallow.
So far, the second design fits in the wall boxes.
But adding a SSR looks very difficult from where is stand (with my tools and knowledge)
Idea of the moment is : how about adding a node (with relay) in the ceiling, where the lighting is suspended ?
Any pros and cons ?
Thanks for reading !
If you have room in the ceiling, it's a good solution, the only problem I see is that it is not very easy to reach in case you need to do any maintenance (ota updates are quite a must in this case)
@sundberg84 sorry i didn't explain enough. It was more like "would it be safe to do so"...
My current project is highly inspired by Aproxx's work
So i use a varistor, fuse and thermal cutoff, but would it be enough ?
I just don't fancy burning the house down...
@ben999 - same there, this has been discussed alot!
Have a look here about safety:
- http://lygte-info.dk/review/Power Mains to 5V 0.6A Hi-Link HLK-PM01 UK.html
The issue will always be that a DIY AC/DC powered node will not be covered with any insurances or so. Its possible to do the safe but without any CE/FEE markings you are not covered... and even a safe product can fail.
@ben999 I have a number of switches around my house that I designed myself. They don't have relay control. They just talk to the automation controller and act as basically a scene switch. If you are in the US, this may be an option for you. Here is the thread that talks about it.
The way I have mine set up, the switch talks to my Vera controller, and my Vera uses scenes to talk to another relay controller on the light/fan/device that I want to control. Many of the relay controllers that I have are Sonoffs. The response from switch to Vera to Sonoff is near instantaneous.
The switches that I designed consist of 3 boards. The power supply board, the controller boardf (arduino pro mini + nRF24 radio) and the switch board. The switch boards that I designed is universal and can be made as a 4 button, 2 button or single button switch. I also have 3D designs for the switch plates that I made. These can be found on my thingiverse page. https://www.thingiverse.com/dbemowsk/designs.