Looking for information on E36 Instrument Cluster

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  1. Looking for information on E36 Instrument Cluster 
    #1
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    Hey, I'm a first year electronics student and I've never dabble with car electronics before so please excuse my ignorance if my ideas are wayyyy off :P

    I'm starting a little project to hook up an instrument cluster to my computer and use data from a racing sim to control the instruments. I've found various wiring diagrams along with a document describing the pins on the connectors.

    EDIT: I should probably add that I've chosen the instruments from an E36 318i to work on, if that has any bearing on things!

    Now as I'm a first year student, I'm not too great at reading schematics yet. What I need to know, is how the instrument cluster is controlled.

    I'm assuming there is some sort of digital electronics inside, so if I want to control the dials/lights, do I need to be sending digital signals?

    If it's not digital, I need to find out which voltages are used for each pin.



    Again, my apologies if I'm completely wrong about all of this, I'm still learning electronics and I have no idea how instrument clusters work, its all a big learning curve right now but I've always been one for throwing myself in at the deep end.

    Any help would be massively appreciated!
     
     

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    TheEnd's Car Details
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    It's all analogue signals rather than data, Fuel and temp sensors are based on resistance so a 0-5v signal will do (5v is signal voltage for most things), RPM and speed are pulse counters.
    Speed is 9 pulses per wheel rev from a hall effect sensor and revs are 2 pulses per rev for 4cyl clocks, 3 pulses for 6 cyl.
    The tacho signal comes from the ECU, so I'd expect a 5v square wave.
     
     

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    FAL (31-01-2012),smnanthny (02-02-2012)

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    Ok thats great, thank you. ^_^ Any other help would be great
     
     

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