#motion sensor + light intensity sensor + light in stair lighting fixtures - I can't find reasonable

1 messages · Page 1 of 1 (latest)

gray epoch
high burrow
# gray epoch https://www.reddit.com/r/homeautomation/comments/1jnzxqq/motion_sensor_light_int...

your probably going to need multiple sensors to get full field of view. you could potentially build something custom with multiple mmwave sensors into a single package. but you are probably not going to find something off the shelf.

the better solution is to have 2 pressence sensors. 1 for top of staits and 1 for bottom of stairs in positions that make sense. then have a smartbulb to use with an automation

gray epoch
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but this solution will make me not having source of light on first and last hole on stairs right?

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because the hole will be filled with the sensor

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changing holes and wires is problematic because it is concerte house and walls are already finished

high burrow
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i don't get what you mean. put the sensors a bit back from the stairs pointing at them with 1 on each level. and then have them trigger an automation to turn on the lights if there is detection on either side

gray epoch
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put the sensors a bit back from the stairs
not in hole? where then? how would I connect wires to it?

high burrow
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the sensors just need to be powered. they can do communication over wifi to trigger the light automation

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they dont need to be connected directly to the lights

gray epoch
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"just need to be powered" in concrete house is not "just" 🙂

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these is serious modification in walls: making scratch in walls to put cable / plaster for walls (not sure how to translate it, the thing which you put on walls to make it flat) / painting and walls after such fix will look bad

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this is why I am looking solution to use existing holes

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if no way, then I have to accept it and figure out something. I have an option to use ceiling as a plan C, but only if everything else will fail

high burrow
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i assume there will be some kind of flooring going over the concrete at some point?

gray epoch
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on next floor up there is attic and this is plan C

high burrow
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you could put sensors on the floor under whatever flooring is going over them. so you could trigger from standing on them?

gray epoch
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ah you mean sensor to detect if someone standing on the floor. No option too, because floor is made from microcement.

high burrow
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is there anything going on top of the concrete? carpet for example?

gray epoch
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no 🙂

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ok so let's make it clear: you don't see any way to use existing holes (including red rectangle) to make it work?

high burrow
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you could maybe use the 2 holes in the middle for 2 sensors, 1 pointing up and the other down

gray epoch
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do you mean no source of light there, but sensor only?

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technically it could work, but it will look strange

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how long battery powered motion detection keep power when triggered many times a day?

gray epoch
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it will look bad, but maybe not as bad

high burrow
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battery powered motion sensors are a bit limited and slow to react as they are powered down most of the time to save battery

gray epoch
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so I could set 2 of them in 2 directions to cover stairs

high burrow
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you could put a box on the wall and mount the 2 sensors on the box i guess

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you could use a microphone and have a sound trigger

gray epoch
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to summary discussion with options to test:

  1. red hole with box and 2 sensors.
  2. make a hole in ceil over the stairs (there is attic) and mount motion detection there
  3. if I could install standing sensor (pressure sensor?) on stairs, then I could activate lights when someone stand on stairs. But this is not perfect, because someone can miss first step, so have to install in more steps and lights turn on too late (should turn of just before stairs, not after step on them)
gray epoch