Inspiration needed for relays-controller

Hardware Home Automation
21

Yes, that could work. Now my safety issues, which i sadly cant check myself vs a diy unit - will there be any problems?
Questions that pop up …

  • Do i need a special relay to work with the wemos? (inductive load, possible additonal diods, …)
  • Is there some foolproof protection against a malfunction of the timer, resulting in a switched relay (instead of a pulse)?

I already use Sonoff Modules with mqtt for other purposes, so that part wont be a problem for me. I still wouldnt mind a ready-built unit though, just to save me time :wink: I have about 15 eltakos to switch.

22

You are only switching low voltage if any so no particular safety on this part. The pulse timer is handled by tasmota and it has proven to be very reliable. For 15 devices you could use 4 4 channels sonoff. Depends on budget but I would get a wemos d1, a demux chip and a 16 relay board. A small psu. All inside a custom made pvc box.

23

Finally this is the solution that i described too🤗