Comments on: Knock response automatic door opener

By: Emtek

Emtek — Thu, 29 Oct 2009 06:33:58 +0000

Sounds fun but I’d prefer using a key any day.

By: sk

sk — Thu, 06 Sep 2007 15:26:11 +0000

http://www.hackaday.com/category/cellphones-hacks/

By: jamshaid iqbal

jamshaid iqbal — Sat, 01 Sep 2007 19:31:40 +0000

hi
asl plz please give me idea of haking a webside now plz ok

By: zotkop

zotkop — Mon, 25 Jun 2007 18:45:34 +0000

Would be nice to have one where you’d have to sing a song every time you want to get the door open.
(imagine a scene where you’d have to go to the toilet)

By: Jack

Jack — Fri, 15 Jun 2007 21:29:02 +0000

Another interesting idea for this would be using a few hall-effect detectors set in several spots on the inside of the door. To open the door you just put a small neodym magnet close to where you know the detectors are, then the door pops open.

By: Forrest

Forrest — Fri, 15 Jun 2007 21:01:55 +0000

I’d like to try this with a capacitance switch on a doorknob. Or weirder yet, a musical lock with a door embedded theramin.

By: muris

muris — Tue, 12 Jun 2007 16:39:14 +0000

very nice. maybe piezzo would be a bit more appropriate for mounting/gluing onto a dor.

By: matthijs

matthijs — Tue, 12 Jun 2007 14:00:57 +0000

Well, it looks unsafe, but it’s like the apartment entrydoor opener connected to your doorbell, if you won’t know it’s there, no one will brute-force knock you!
and because it’s a empty building, your neighbors won’t get tired from your knock-sequence, so they won’t give it a try someday..
nice hack!

By: Martin

Martin — Tue, 12 Jun 2007 12:22:59 +0000

Cool design might leeve you a bit open to break ins tho

By: WaffleMatt

WaffleMatt — Tue, 12 Jun 2007 02:03:37 +0000

I’m working on (Read: About to start, anytime now :P) a similar setup, but it takes a picture with a webcam through the peephole of whoever knocked. An answering machine, but for your door.

By: thip

thip — Tue, 12 Jun 2007 01:53:14 +0000

Damn….. I just stumbled over this and thought Id submit it but it looks like I was beaten to it! oh well… it was a cool idea.

By: _Vyper

_Vyper — Tue, 12 Jun 2007 01:40:56 +0000

I’m waiting for someone to make one that uses a webcam to detect shadow puppets through the peep hole as a access control method :P

By: EdZ

EdZ — Tue, 12 Jun 2007 01:21:33 +0000

Port Knocking comes full circle!

By: wolfmankurd

wolfmankurd — Tue, 12 Jun 2007 00:14:09 +0000

This would be awesome fun to hack, if some how indicates a mistake you could keep trying, well it would be very hard but none the less fun.

By: ex-parrot

ex-parrot — Tue, 12 Jun 2007 00:02:51 +0000

this seems like a good candidate for using one of those piezo sensors glued to the door.