1. Visiting from the US? Why not try DIYnot.US instead? Click here to continue to DIYnot.US.
    Dismiss Notice

How to make a cheap microwave proximity alarm?

Discussion in 'Alarms, CCTV & Telephones' started by pretzelz, 29 Aug 2016.

  1. pretzelz

    pretzelz

    Joined:
    28 Dec 2008
    Messages:
    137
    Thanks Received:
    1
    Location:
    Southampton
    Country:
    United Kingdom
    Hi all. Some kids broke the steering lock on my moped through the night (probably sat on the seat and kicked the steering) so today I've been wondering about a project I had in mind for a while, for a simple microwave proximity sensor alarm.

    I see the microwave module can be bought here for £12:
    http://www.ebay.co.uk/itm/Microwave...hash=item25b64c248f:m:meQaxAAQhoUHA7D0lUjoKSg

    Then would it be possible to connect this to the horn and battery?

    And would a remote be needed to turn the siren off?

    Perhaps it would be worth buying a kit, and replacing the sensor?
    http://www.ebay.co.uk/itm/Scooter-A...962171?hash=item4aeb854efb:g:GUYAAOSwstxVd-Ob

    I live in a mid-terrace house, so something like this (down the line) inside the front or back door could one day also be nice, so burglars don't even get the chance to snoop around without a warning 'pip' sounding...
     
  2. pretzelz

    pretzelz

    Joined:
    28 Dec 2008
    Messages:
    137
    Thanks Received:
    1
    Location:
    Southampton
    Country:
    United Kingdom
  3. PaulUszak

    PaulUszak

    Joined:
    7 Jun 2015
    Messages:
    220
    Thanks Received:
    5
    Location:
    Staffordshire
    Country:
    United Kingdom
    I would suggest an alternate solution. Cover the moped externally with something like a stand alone PIR device connected to an alarm, or a shed alarm type thingie. Putting kit onto the moped itself will be problematic as you will have to mount it somewhere securely, and it will have to be waterproofed, including the connectors. It will also require some sort of master on /off circuit as what's to stop it sounding the horn when it's parked at Asda and people walk past?
     
  4. bernardgreen

    bernardgreen

    Joined:
    3 Nov 2006
    Messages:
    21,886
    Thanks Received:
    2,013
    Location:
    Bedfordshire
    Country:
    United Kingdom
    Two quotes from the sellers description

    It sends out the microwave radio energy into its path and waits for an object to reflect the energy back into it.

    Microwave sensors send out ultra high frequency sound waves, and detect the reflections.

    which do not inspire confidence ion the seller's ability to provide technical after sales support for the device.

    Park the moped on a platform that is supported on flexible mountings and fit vibration / movement sensors to the platform
     
  5. PaulUszak

    PaulUszak

    Joined:
    7 Jun 2015
    Messages:
    220
    Thanks Received:
    5
    Location:
    Staffordshire
    Country:
    United Kingdom
    I've just been somewhere where punji sticks were used frequently and effectively. Is that an option or might the council look dimly on the idea?
     
  6. DIYnot Local

    DIYnot Local

    Joined:
    3 Sep 2019
    Country:
    United Kingdom

    If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

    Select the supplier or trade you require, enter your location to begin your search.


    Are you a trade or supplier? You can create your listing free at DIYnot Local

     
Loading...

Share This Page