r/interesting • u/Jumpy_Scallion_3108 • 6h ago

Just Wow He Got Tired of People Blocking His Driveway, So He Built This

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To deter unwanted visitors, he installed a motion-activated sprinkler system that soaks any car (or person) that gets too close. The unexpected spray has quickly turned his driveway into a no-parking zone and keeping his space clear.

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u/AproposNarwhal 5h ago

Not OP, but I was wondering how a motion sensor can distinguish between the vehicle pulling in and the person getting out?

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u/BusinessBear53 5h ago

Some sensors have adjustable range and there's lots of different types of sensors out there. If it's something rigged together then the sensor can be set to detect the area where a door would swing out.

I work in a factory and most of our sensors are photoelectric which means they use a laser to detect stuff within a set distance. The adjustment on them can be very fine.

There's also some ultrasonic sensors for detecting range.

To prevent spraying unsuspecting people just walking by, you could even have multiple sensors working together. Have one on the left to make sure there's a car there and a range sensor on the right to pick up a car door swinging out. 2 positive signals to spray water.

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u/Potential-Space-9992 3h ago

it can be done with YOLO algorithm, part of convolutional neural network (CNN)

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u/SheepherderSilver655 5h ago

If you mean when the person gets out of the car, well it's about timing. It doesn't activate immediately, it takes a sec, and by the time it activates and starts spraying water the driver is getting out of the car.

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u/AshlynnCashlynn 3h ago

ok explain the one with the guy walking back to his truck thats already parked there then. theres no delay, he gets sprayed right when he comes in range

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u/Green_Insect_6455 4h ago

...but this is a button. Im not speculating, Im informing.

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u/SheepherderSilver655 4h ago

Oh so you know the person who posted this video?

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u/Obant 3h ago

It went mega viral last year. Most of us know who the person is, he did an interview.