3 ms·
> (these detect movement by the disturbance in a low level high frequency radio signal). I'd never heard of this before. One of my former managers is really in
by mynameisash 5y ago
> (these detect movement by the disturbance in a low level high frequency radio signal).
I'd never heard of this before. One of my former managers is really into Home Assistant and has done a lot with his setup, but I think all of his motion detection was IR. How's your 'radar' setup? Do you get a lot of false positives/negatives? How's the distance on its detection?
- throwaway0a5e 5y agoHe's talking about the motion detector things that are a drop in replacement for switches. You see them often in rooms in commercial buildings. Something like this https://i.ebayimg.com/images/g/nvAAAOSwEK5fmkrH/s-l1600.jpg https://i.ebayimg.com/images/g/nvAAAOSwEK5fmkrH/s-l1600.jpg
- kwhitefoot 5y ago> He's talking about the motion detector things that are a drop in replacement for switches. No I'm not, but those work too. This is what I bought: https://www.ebay.com/itm/153285261299 https://www.ebay.com/itm/153285261299 It is described as a radar sensor because it uses a high frequency oscillator and monitors the change in the signal due to things moving in the electromagnetic field. Imagine the effect of waving your hand near the aerial of a radio receiver when the signal is weak.