Reminds me of this story where a car was 'allergic' to vanilla ice cream: https://news.ycombinator.com/item?id=13347852
Neighbor's house alarm triggers when I put my car in reverse
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Re: Neighbor's house alarm triggers when I put my car in reverse
#52Earlier quoted context omitted.
I don't know, I would tend to side with the theory that the car engine sound at the specific RPM and power output matches the resonance frequency of one of the house windows. Resonance can creep up in many phenomena.
Not in my opinion because this would have been a problem before with other cars and alarms. Or motorbikes. Without knowing the details of the alarm system it is hard to have an educated guess.
I've owned a number of Subarus and let me tell you, even the non-performance models have a way of shaking things inside the house that you wouldn't believe until you experience it. My STI was capable of being loud, but oddly enough it was my wife's Outback (nearly silent if you stood next to it) that would shake pictures on the walls and make them start tapping.
Re: Neighbor's house alarm triggers when I put my car in reverse
#53This comment made me laugh:
> Maybe you neighbor is setting off his alarm on purpose just to mess with you haha!
Re: Neighbor's house alarm triggers when I put my car in reverse
#54Interestingly, I used to have a 433MHz wireless doorbell (a "1byOne", specifically) that would spuriously chime every time a specific one of my neighbour's cars set off. I assumed it was interference from some sort of PIR motion detector transmitting a signal to say it saw some motion, but I suppose it could conceivably have been caused by the car going into reverse. I never debugged it, I just threw the doorbell awa…
Garage door openers frequently operate at 433MHz, very likely your neighbor was hitting the button as they left?
Re: Neighbor's house alarm triggers when I put my car in reverse
#55Maybe the rear lights has something to do with it, could be a faulty light oscillator for led if you are using one
Re: Neighbor's house alarm triggers when I put my car in reverse
#56My guess is that the backup camera has an IR light to assist with nightvision. Some security cameras support triggering alerts if they get too much IR light because blasting them with an IR floodlight is a common way to blind a security camera.
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Re: Neighbor's house alarm triggers when I put my car in reverse
#57Reminds me of this story where a car was 'allergic' to vanilla ice cream: https://news.ycombinator.com/item?id=13347852
There's also the case where an email seemingly had a physical distance limit :
https://www.ibiblio.org/harris/500milemail.html
Re: Neighbor's house alarm triggers when I put my car in reverse
#58I don’t know why, but my thought was the same as the third most voted comment in the thread too. The collision avoidance system, which I would have guessed was ultrasound, but the guy on reddit says it’s microwave. Either way, that could be picked up by some kind of sensors in a house alarm system. We live in a crazy world.
I don't know, I would tend to side with the theory that the car engine sound at the specific RPM and power output matches the resonance frequency of one of the house windows. Resonance can creep up in many phenomena.
But the engine speed doesn't change until you lift the clutch. So if this were due to the RPM, putting it in reverse while stationary surely wouldn't do anything in particular.
Re: Neighbor's house alarm triggers when I put my car in reverse
#59Earlier quoted context omitted.
> Is it just me who'd love something like this to happen to me? I love reading about interesting problems and creative ways to solve them. I used to wish for the same. But then I was given a super annoying one. In my apartment I heard this beep about once every 90 seconds or so. I tried ignoring it for a while hoping it'd go away. And just so at the right frequency and infrequent enough Impossible to determine direct…
We had a fire alarm going off due to low battery once. We searched the house for 3 hours trying to find it. Gave up, slept through the beeping. Next day, enraged, we tried again. Eventually we found it in the bathroom trash can.
Just did this yesterday, and eventually found it was the neighbours one that was flat. It’s the 3rd time I’ve knocked on a neighbours door (different people each time) to ask them to take a battery out an alarm. I’d consider it a feature if they combusted after alarming for a day.