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Thread: Creating a digital speedometer system

  1. #1
    Who am I? HiJackZX1's Avatar
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    Creating a digital speedometer system

    I was thinking doing research on HUDs, and was wondering if it was posiable to make a full color VGA heads up display. I am going to put a 9 inch screen in my sun visor, was going to use it to show navigation, but Toaster said thats a bad idea. So I got to thinking, what about a VGA HUD. From what I have seen on Siemens VDO http://usa.siemensvdo.com/press/pict...up-display.htm it seems its a LED based small screen.... which is then reflected to a mirror, lense type thing, then projected much larger onto the windshield.

  2. #2
    FLAC
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    I'm not sure if he's still working at it, but it was an interesting thread:

    Project NiteVision - NiteMax + HUD + carputer

  3. #3
    Variable Bitrate
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    The main issue is getting sufficient brightness out of an LCD pannel to be clearly viewable in the windscreen reflection during daylight.

    My old Nissan Silvia came with a factory HUD, which although it worked great most of the time, in situations with lots of sunlight it did get washed out. Note thsi was without any special window treatments (factory windscreen had been replaced). From memory the display in the dash was an high contrast 3 digit VFD.

  4. #4
    Variable Bitrate
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    If I was to do a full colour HUD I'd look at usign something like these:
    http://www.ledtronics.com/ds/rgb1004/

  5. #5
    Who am I? HiJackZX1's Avatar
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    Yea, there is a huge thread on here i found. It seems to be to much fabrication to do... I am not liking the idea. In the post I did saw were the speedomiter was replaced with a screen and then a program creates a virtual type gauge instead. Something like that would like nice..... wonder how hard it will be to do though? The example I saw was that when a night cam was activated the speedomiter was changed to a bar form and placed at the bottom of the screen.... i want to do the same thing, but have it display navigation and engine diagnostics. Has anyone attempted this?

    Pic one is with the guage on normal.... also has nav in the center of it, thats cool..... then when switch to cam mode the spedometer goes linear.... I would luv to do something like this..... but instead when I use nav or engine diagnostics it does that....
    Attached Images Attached Images    

  6. #6
    Who am I? HiJackZX1's Avatar
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    So has anyone tried replacing thier guages with a digital one like this. What would I need to do so? Also I drive a durango and it has a box at the bottom with all the warning lights... how would i get those indications on the screen, like how would it communicate? My dash can support a 8 inch screen which would be nice. Also would be cool to make the voltmeter, gas, rpm, basically the whole console into screens..... 2 smaller ones for the volt, gas, etc... and the big one for speedometer, nav and engine diagnostics.

  7. #7
    FLAC
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    Looks pretty dangerous to me, then again, you are in Miami, so it wont affect my commute.

  8. #8
    Who am I? HiJackZX1's Avatar
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    what looks dangerous? did you read the rest of the post? i changed what I wanted to do..... Nav and engine diagnostics will now replace the guage cluster and be made 100% digital... all will be in the line of sight. Infact i was talking to David (creator of CF) and he says that maybe a plug in can be made that will have a digital speedometer and have which way i have to turn pop up....

  9. #9
    FLAC
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    cam mode, now I got it. I saw the guy and thought it was a movie. Sorry. That would be pretty cool. You've seen the OBD interface software available? Fusion brain is a hot ticket for getting digital and analog information from your car and making it available for display/use.

  10. #10
    Who am I? HiJackZX1's Avatar
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    Well, I do not intend to use night vision, maybe in the future..... I am still trying to decide how I should lay the gauges out. Should I do it like the BMW has it, were it has the gauges on the sides like normal and just the screen replacing the speedometer and RPM. I think maybe thats all I should replace.... If I replace all the gauges, then im worried I will have to do so much fabrication.

    H3RK, have you used Fusion Brain? I am praying that most of the warning lights that come on the dash will also go through the OBD2 port, so then I can avoid Fusion Brain. FB seems very complicated to me.

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