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Build Advice Proximity Sensor

Discussion in 'Hardware' started by sparkyboy22, 20 Apr 2014.

  1. sparkyboy22

    sparkyboy22 Web Tinkerer

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    I want to rig up a circuit or kit of some kind that will detect when I am nearby.

    I want it to unlock a latch when I am within around a metre of it.
    I don't mind carrying a keyring type thing or RFID tag to make it work.

    I have no idea of what sort of thing to start reading up on to figure out where to start.

    Any ideas on where to look to get started?
     
  2. davie107

    davie107 Linux or Windows???

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    Hey,what do you mean by unlock a latch?? what do you want to happen when you walk by... something to open?:clap:
     
  3. longweight

    longweight Possibly Longbeard.

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  4. sparkyboy22

    sparkyboy22 Web Tinkerer

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    As ever, the devil is in the detail!

    Probably need to be battery powered as there arent any plus nearby.

    I want a door to unlock when only certain people get in range.
     
  5. wolfticket

    wolfticket Downwind from the bloodhounds

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  6. sparkyboy22

    sparkyboy22 Web Tinkerer

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    Thanks wolfticket but as you noticed it needs to identify me or a tag of some kind.
     
  7. RichCreedy

    RichCreedy Hey What Who

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    do you mean something like this
     
  8. sparkyboy22

    sparkyboy22 Web Tinkerer

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    That's the sort of thing.
    Now just need to find a way to do similar for 1/4 of the cost!
     
  9. RichCreedy

    RichCreedy Hey What Who

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