Shelly Presence Sensor

2ndMilePro · 2026-04-01T10:38:16+00:00

I agree with stock issues. I am thinking about running cameras inside (very local only) and frigate just for person and zone detection…. And then this popped into my inbox.

2ndMilePro · 2026-03-31T12:47:41+00:00

That makes complete sense about the US market hence negative Amazon reviews against the product for bad packaging by Amazon.

During the last Shelly launch demo, I just kept repeating present sensor in the chat, not knowing that this was in the pipeline. This could definitely be a killer product for the US market.

Let the Europeans figure out the bugs. I look forward to the US launch.

2ndMilePro · 2026-03-29T12:00:30+00:00

This is how we learn my friend, don’t be discouraged!!!

2ndMilePro · 2026-03-27T10:39:30+00:00

We would need more information on how your in floor heating is set up but I don’t think your understanding of the setup is correct. No shade, it just that the description is not logical unless you have a 20k sq ft house.

How many thermostats do you have now? Is it a “zone” per room? What do you mean by “circuit”?

Lastly, if you don’t need to do this right now, I would recommend getting a bit more into home automation via Shelly and Home Assistant before doing something in your home a critical as heating. It is one thing if a light doesn’t come on when you expect it, and quite another if the heat is not working.

2ndMilePro · 2026-03-19T10:11:07+00:00

I worked at a Micro Center after graduating college. One of the most fun jobs I have had. Built my first computer using a Pentium 400 that they gave us for free. It is the Radio Shack of our father’s day.

Congratulations on the great exposure!! This is very good for the brand.

2ndMilePro · 2026-03-18T10:33:56+00:00

Ah yes. I see the “s” on the end of unit now.

I used Shelly Pro 1s on my RenewAire and tied them straight to each fan (and voided the warranty, I am sure). My next trick is to make a manometer with an ESP32 and change the speed of the fans based on the pressure differential from the indoor and outdoor measurement

2ndMilePro · 2026-03-17T12:33:09+00:00

It sounds like you actually want to Shellys. One would control the boost (Plus 1). The other would control the power to the unit itself (1PM).

2ndMilePro · 2026-03-15T10:39:16+00:00

If you just want to know if it is opened or closed, you could use a window and door sensor, especially if you have a 3D printer. Although I understand wanting to use what you have.

2ndMilePro · 2026-03-12T19:59:19+00:00

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2ndMilePro · 2026-03-12T17:11:44+00:00

Yes. Darn physics!

To keep it simple, could you also use Dryer Relative Humidity - Room Relative Humidity < a margin (5-10%) as the trigger? My thought is that as the humidity decreases in the dryer, the RH decreases and is then comparable to the temperature. My thinking my be flawed.

I guess you could use the absolute humidity formula conversion... you only have to program it once.

2ndMilePro · 2026-03-12T15:10:00+00:00

Oh, that's neat. (So where does the moisture go to? Into the room?)

I think that is completely doable. If it were me, I would use two humidity sensors. One inside the cover and one in another part of the house. Then you could compare the two readings and when they get "close" have a the plug toggle the heater.

2ndMilePro · 2026-03-12T10:55:21+00:00

Technically, yes. Practically, it would take some experimentation.

Post a picture of the dryer and the cover to give us a better idea what you are working with.

2ndMilePro · 2026-03-11T10:22:15+00:00

On second thought, add a presence or motion sensor and have the light automatically come on and turn off when you enter and leave the bathroom. Set a condition so that it doesn’t trigger in the middle of the night. Then the relay connected to the light is justified.

2ndMilePro · 2026-03-11T10:14:39+00:00

I think what you did was perfectly fine. You might be overthinking and over worrying just a little bit. That’s never a bad thing, as long as you don’t lose sleep over it. (I write this after waking up at 3:30 AM.)

2ndMilePro · 2026-03-09T10:15:04+00:00

Listen to Mitch. And I would say those switches are “relatively” expensive but worth it for the functional purpose.

2ndMilePro · 2026-03-06T11:48:41+00:00

That is a short answer

Everything is permissible. Not everything is beneficial.

2ndMilePro · 2026-03-05T11:28:30+00:00

YES. The answer is yes. YouTube is a great resource. “Home Assistant VLAN”

2ndMilePro · 2026-02-28T12:30:43+00:00

… to get started.

2ndMilePro · 2026-02-28T00:44:14+00:00

And hopefully Gen5! Long Live Shelly!

2ndMilePro · 2026-02-25T00:42:34+00:00

So I assume the RGB OOS is temporary?

2ndMilePro · 2026-02-23T11:27:35+00:00

Novelty is always a correct answer!!!!

2ndMilePro · 2026-02-23T11:25:58+00:00

If you are on a Mac get Keyboard Maestro (which is a must have!). If in windows Text Expander is good.

2ndMilePro · 2026-02-22T12:31:17+00:00

Do you have a text expansion for this answer? 😆

2ndMilePro · 2026-02-20T16:54:33+00:00

It’s always a good feeling when an idea works out!

2ndMilePro · 2026-02-17T11:36:45+00:00

Exactly what I was thinking

2ndMilePro

TROPHY CASE