Re: door opening sensor HW for OpenBSD?

Hello.

I was thinking of a cheap USB mouse after I sent my original mail, but your list is.. wow :) long.

So it sends a mail when door is moved even a little bit and it plays an MP3. The mouse costed $3.

it just works.

pic:
https://i.imgur.com/7X6N059.jpg
https://i.imgur.com/eROpANf.jpg

Thanks :)

> Sent: Saturday, March 24, 2018 at 11:50 PM
> From: Robert <infosec@die-optimisten.net>
> To: misc@openbsd.org
> Subject: Re: door opening sensor HW for OpenBSD?
>
> On Sat, 24 Mar 2018 22:32:02 +0100
> "Hess THR" <hessnovTHR44@mail.com> wrote:
> > Can you please recommend any hardware, that I could plug in to the notebook and though I could send a warning mail when the door was moved (open/closed).
>
> I can think of so many ways to do this, from boring to insane :)
>
> * Mount a switch on top of the door that gets unpressed when the door
> opens, and connect to the serial port. Then read the pin status.
> * The same, but mount the switch behind the door so that it gets
> pressed when the door opens.
> * Use a magnetic switch instead, and read it through the serial port.
> * Put a keyboard behind the door, so that the door presses against a
> key when it opens. Map the key to a script.
> * Attach a mouse to the door and react on the mouse movement.
> * Attach a GPS sensor to the door and measure movements.
> * Attach a USB barometer and detect the air pressure diff when the door
> opens.
> * Attach a USB gyroscope to the door. Detect movement.
> * Attach a USB light sensor (Arduino?) and detect movement.
> * Put an RFID tag on the door, and attach an RFID reader, to detect
> when the tag approaches the reader.
> * Attach the laptop to the door and use the built-in gyroscope (if
> available).
> * Same, but use the gyroscope from the HD. Might require firmware
> hacking.
> * Don't oil the door and evaluate the microphone input.
> * Attach any USB device, but route the 5V line through a switch
> attached to the door. Detect when the device attaches.
> * Mount the laptop behind the door so that the door opens/closes the
> laptop lid. Detect wake/sleep state.
> * Fix your credit card to the door and have it move through a card
> reader when the door opens. Check account balance through script.
>
> Send pix!
>
> regards,
> Robert
>
>