this post was submitted on 17 Nov 2023
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Home Automation

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Home automation is the residential extension of building automation.

It is automation of the home, housework or household activity.

Home automation may include centralized control of lighting, HVAC (heating, ventilation and air conditioning), appliances, security locks of gates and doors and other systems, to provide improved convenience, comfort, energy efficiency and security.

Warning: Working with electricity can result in injury, property damage, or even death if it is not done properly. Please keep this in mind while assisting others. If you are not sure about what you are doing, hire a licensed professional.

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Hello everyone,

I have a question about shelly 1, didn't use it so far. Can I connect one shelly device, and depending if that shelly is currently getting some power then turn on/off another shelly?

First shelly will be connected to device, and if that device shares power through to shelly, then second shelly should turn on another device.

Is that possible with that? or should I use something else?

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[–] [email protected] 1 points 10 months ago

So, first of all, this solution will be cleaner and easier if you could power the first Shelly all the time and wire the switch into the switch input. But if that's not possible, you can still make it work.

If you can wire the Shelly for permanent power, I think you can even make it work with the original Shelly firmware. It can call webhooks so the first Shelly can call the HTTP API of the second Shelly. I didn't try it out though.

Otherwise you'll have to flash Tasmota: Original Shelly series Shelly Plus series

Then you can configure the first Shelly to periodically (e.g. every 55 seconds) call Tasmota's HTTP API on the second Shelly and use PulseTime on the second Shelly to turn off after 1 minute.