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This is a question DIY Techno-hacks

Old hard drive platters make wonderfully good drinks coasters - they look dead smart and expensive and you've stopped people reading your old data into the bargain.

Have you taped all your remotes together, peep-show-style? Have you wired your doorbell to the toilet? What enterprising DIY have you done with technology?

Extra points for using sellotape rather than solder.

(, Thu 20 Aug 2009, 12:30)
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The radio-controlled cat-flap-cat-box-cat-containeration device
We've got a kitten. He's a loon. He's also not yet safe to go out without experiencing instant death under the wheels of cars. He's a nippy little bugger so we'd have great difficulty getting out of the house without him racing through the door at the last minute, resulting in an hour or two chasing him about trying to get him back inside.

My solution was (not) simple:

Get one plastic cat box (the kind you take the cat to the vet's in).
Replace the little door with one of those catflaps that only open if your cat has an infra-red transmitter on it's collar.
Replace the electronics for the catflap's infra red receiver with the gubbins from a car remote central locking radio device.

Put kitten in box (the catflap will open inwards but not outwards).
Leave house.
Close door.
Press button on central locking remote key fob.
Catflap then opens both ways.
Kitten gets out through catflap and runs up to window to shake paw at you through the glass.

Sadly, we've not managed to come up with any way of putting him back in the catbox prior to us coming back in, but usually he's too slow when we return.

Here is peanut, looking evil:

(, Fri 21 Aug 2009, 16:29, 1 reply)
That is one evil looking cat.
Here, have a click- just don't hurt me!

Also, have an attempted second click for the cat-box idea.
(, Fri 21 Aug 2009, 17:42, closed)

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