Smart home light barrier not motion sensor

Hardware
1

Hi,

im looking for smart home light barrier and its surprisingly hard to find. There are some infra red trip wires but none from a know IoT/smart home producer.

I had some succes with taping of the field of vision of a philips motion sensor, but even though it limits the sensing cone without loosing sensitivity, its a relativly wide cone nevertheless.

Has anyone seen somehting like that?

Cheer S.

2

You could use a non smart IR barrier and connect that to a smart switch.

3

Sidebar, and out of curiosity - What is a “light barrier” exactly? What does it do? Is that a curtain thing at the window, to block sun light coming into your room, so that you can enjoy your projectors in the dark?

Maybe any link or picture, to facilitate future discussions?

I am trying to visualize here, but likely have missed the target by a mile.

4

I believe he is talking about something like this:
Highlight drahtlose automatische besucher zählsystem mit LCD display für supermarkt|counting systems|system - AliExpress

There is usually something like it in a store, one side has a light (IR probably) of some type and the other a reflector and it counts/dings a bell.

Or:
Konlen 3 Infrared Beams Wired Outdoor Perimeter Sensor 250 Meter IR Active Barrier Detector Intruder Alarm From Wall And Gate|Sensor & Detector| - AliExpress

But they can easily be connected to a ESP to get a smart functionality

5

Ah I see.
Indeed - can’t say I’m seen any like this from IoT/smart home producers.

That said… Not exactly an off-the-shelf solution, but maybe one could modify something similar, with ESP8266 / ESP32 plus ESPHome?

6

Yes, like the things that @Hellis81 found. or indeed a laser tripwire.

You could probably rig something Arduino based together but I wonder why this doesnt exist. I can imagine some useful applications.
And that not even talking about the limits of motions sensor. My hue motion sensor, which I would count towards one of the higher end models, is reliable and doesnt have a 3 min cooldown like cheaper models, but quick on and off or even counting people coming through a door wouldnt not be possible.

7

Hi
My garage is very small and is quite common that the car is parked 4cm away from the folded iron door…
Sometimes I park the car and it is not away from the movement area of the garage door, so I have to return to the car, and rear it 2 or 3 cm more.
So, I need to “built a line/wall”, that if it is interrupted the car is not on a safe position and it would turn on a few RED LEDs, when in safe position it would turn on a few GREEN LEDs.

I find this laser optic sensor, that says it would work up to 6m. My garage door have 5m. https://de.aliexpress.com/item/1005005382850864.html?spm=a2g0o.cart.0.0.60f64ae4a2rfZT&mp=1&gatewayAdapt=glo2deu

Can you share the yaml that you use on ESPHome? What about the wiring?

About the laser optic sensor that I found, would I go for NPN or PNP? NO or NC?

Does anyone recommend other solution?

Thanks in advance!

8

Hi, I have the same problem, and a found this sensor infrared with a ZigBee module. But, it’s necessary buy 10 units. But, it’s possible to do with a ZigBee module.

9

i will try this

I just found this on AliExpress: CLP71.054 | Meian Infrared Beam Sensor, IP65 Waterproof, 2 Beam Infrared Detector Alarm, 8 Frequency Conversion, 100M, for Villa Farm Fence
https://a.aliexpress.com/_mPezhEF

with a relay or my konnected alarm