Need some help getting started(again) Compass for car

Discussion in 'The Projects Forum' started by VooDooCC, Aug 28, 2009.

  1. VooDooCC

    Thread Starter New Member

    Aug 28, 2009
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    I'll start off by saying that I did go to school for electronics a few years back, but primarily I dealt with PLC's and wiring, not so much engineering.
    I recently became disable and had to get rid of my car for a truck that doesn't have a couple features that I'm used to, and want to put them into this one. For now, I'll just focus on the compass and do the others later.
    I never got into microcontrollers and am not sure if I want to buy the programming software equipment. Unless it'd be more cost effective than buying a bunch of IC's
    With that being said, I found a good schematic for the compass, but have 2 issues on that: 1)How to drop the voltage down from car supply (12-14) down to a usable 5 without causing huge heat concerns. 2)How to get the output to go from being 4 LEDs to 2 15 segment displays (N,S,E,W;NE,NW,SE,SW)

    Thanx,
    Justin
     
  2. Gaspode42

    Member

    Aug 10, 2009
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    Justin

    Could you please post a link to the schematic and then we may be able to help you more.
    For part 1 look up switching regulators, for part 2 we need the schematic.
     
  3. VooDooCC

    Thread Starter New Member

    Aug 28, 2009
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  4. hgmjr

    Moderator

    Jan 28, 2005
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  5. Wendy

    Moderator

    Mar 24, 2008
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    Are you wanting a 2 digit LED numberical display version, like a lot of cars currently use?

    N NE E SE S SW W NW
     
  6. VooDooCC

    Thread Starter New Member

    Aug 28, 2009
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    Bill Marsden, that is correct.

    I wouldn't mind having the degree readout as well, so I'm probably going to end up springing for the hm55b that hgmjr linked to. It's a little more money, but looks like it'd be more reliable and precise.
     
  7. Wendy

    Moderator

    Mar 24, 2008
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    For a simple 8 position indicator it probably is overkill, but it does look simple. Wonder what the interfacing is going to be like.
     
  8. VooDooCC

    Thread Starter New Member

    Aug 28, 2009
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    Overkill is good though :)
    I have 4 of them, and space isn't a concern, so I thought I should finally put one to use. Plus I can use it for the other things I'm wanting to do later on: clock, temperature and I'm sure I'll come up with more later
     
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