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582Re: [tracker2] PLC logic

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  • Wes johnston
    Jun 2, 2006
    • 0 Attachment
      muhhhhahaha..... I like that.... semi permanent disabled.  But the "must have" accessory would have to be the ejection seat.   What would really be fun would be to activate a prerecorded computer voice that said something like "sleeping gas release in 5 4 3 2 1...." and then release some of that harmless smoke they use in discos.  Would be great to see how fast your average thief could get out of a car.
       
      Seriously, using the NC contacts of a relay works wonders... the relay is dormant, current flows thru contacts to coil or fuel pump.  Activate the relay and current is interrupted.  Most people think of relays as must turn on to pass current, this is the opposite.
       
      Wes
      ----- Original Message -----
      From: scott@...
      Sent: Friday, June 02, 2006 4:09 PM
      Subject: RE: [tracker2] PLC logic

      I've had several requests for a geofencing option like that.

      Any suggestions on how to safely disable a car using the high-side switch?
      I suppose a brute-force way to do it might be to switch the fuel pump supply
      to ground and blow the fuse, assuming it's rated at less than 20 amps.

      Scott

      > -----Original Message-----
      > From: tracker2@yahoogroups.com
      > [mailto:tracker2@yahoogroups.com] On Behalf Of
      > juha.nurmela@...
      > Sent: Friday, June 02, 2006 1:01 PM
      > To: tracker2@yahoogroups.com
      > Subject: Re: [tracker2] PLC logic
      >
      >
      >
      > On Fri, 2 Jun 2006, Wes Johnston wrote:
      >
      > > a way to provide the tracker with two points defining a line (or a
      > > single point and radius) and automatically activate the cutdown? 
      > > Problem is, we live near the coast and if our balloon blows too far
      > > east, we'll never see it again.
      >
      > That feature might also work against car theft, if there's a
      > nice way to disconnect ignition or injection.
      >
      >
      > Juha, OH5NXO
      >
      >
      >
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