Funny homebrew engineering project - Page 1
Forum section: electronics / general

author: JonnyBoats
author_rank: Regular Contributor
timestamp: April 29, 2012, 01:44:54 am
content: Very funny:How to stop cats pissing on your car.

author: dcel
author_rank: Regular Contributor
timestamp: April 29, 2012, 07:04:43 am
content: Quote from: iamwhoiam on April 29, 2012, 04:51:57 amYup, second that!Chris

author: siliconmix
author_rank: Frequent Contributor
timestamp: April 29, 2012, 07:10:10 am
content: pure genius

author: AntiProtonBoy
author_rank: Frequent Contributor
timestamp: April 29, 2012, 09:20:14 am
content: Was entertaining to watch.

author: M. András
author_rank: Super Contributor
timestamp: April 29, 2012, 11:59:20 am
content: i would fit some paintball and airsoft guns too and another water spray in a bit higher to evently take care of the cats:D:D

author: Rerouter
author_rank: Super Contributor
timestamp: April 29, 2012, 12:33:59 pm
content: should have fitted a second sprayer to hit them after they jump

author: Zyvek
author_rank: Regular Contributor
timestamp: April 29, 2012, 09:51:07 pm
content: Funny stuff.I've thought about doing something similar with an air horn hidden in my trash to teach the neighbors yappy little dog from tearing into the bag on trash day. If I ever do it I'll have to setup a camera as well.

author: Unknown
author_rank: Unknown
timestamp: April 29, 2012, 09:58:18 pm
content: This + foamy water + slippery surface = self service auto wash for cats

author: steve_w
author_rank: Regular Contributor
timestamp: April 30, 2012, 01:49:59 am
content: bloody brilliant, i laughed till i stoppedeven my wife acknowledged that electronics can be entertaining :-)

author: free_electron
author_rank: Super Contributor
timestamp: April 30, 2012, 04:49:44 am
content: put down two water nozzles under a 90 degree angle... ( 45 degress off the surface ).. that way the cat gets sprayed head and tail and will be confused as hell since it has no way out. They don't mind being soaked but they hate being 'trapped'. That should teach them to stay away.or aim the nozzle toward the entrance. that'll blast the cat straight back out the gate ...

author: Ed.Kloonk
author_rank: Super Contributor
timestamp: April 30, 2012, 08:04:15 am
content: Can it be modified to work on the seven day inventors?To be fair, they don't piddle on my things. As far as I know.

author: FreeThinker
author_rank: Frequent Contributor
timestamp: April 30, 2012, 11:15:15 am
content: Might work in Oz but if you left that gear outside of my house you would have nowt left in the morning.. Makes me wonder that the hell he has in his garden that attracts nine cats, Catnip?

author: Fraser
author_rank: Super Contributor
timestamp: April 30, 2012, 12:00:11 pm
content: I had the same problem In Darwin NT. The cats up there seemed to like spraying into the cars air vents and down the window. I tried covering my car in pepper and that worked for a while but the cats kept coming back so a more extreme measure was used.I quickly constructed a 555 IC based oscillator driving a 2N3055 power transistor that in turn powered a surplus car ignition coil. The output of the coil was taken to a pair of thin TCW wires that zig zagged back and forth across my drive. The circuit was non lethal but acted like a cattle fence (on which I based the idea)The cats very quickly learned to avoid my house and the electric fence could be removed and reinstated quickly whenever problems occurred :-)If you think I was cruel...I love cats but not spraying....an Australian colleague at the station where I worked had a different approach....7 cats collected and taken to the tip in one weekend ..... he had shot them in his back yardApparently this is acceptable practice in Darwin as the Northern Territory is/was the 'Wild North' Frontier and Cats are considered non indigenous pests.Aurora