Custom Gauge on a LCD
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This is a discussion on Custom Gauge on a LCD within the Interior Mods forums, part of the Tech & Modifying & General Repairs category; I am looking into making a custom monitoring tool to plug into the ECU. I saw one thread on this, ...

  1. #1
    Registered User cranium's Avatar
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    Custom Gauge on a LCD

    I am looking into making a custom monitoring tool to plug into the ECU. I saw one thread on this, but they were more talking about re-programming the ECU. I just want to make some software to watch things like EGTs and water temp and oil pressure, etc. I plan to connect it to a laptop first, but eventually plug it into a small LCD with some custom software running on a RTOS like VxWorks.



    My questions are:
    Where is there a reliable map for the ECU (or any other data acquisition points)?
    Does it update fast enough? (1/sec should be enough, I am only monitoring)
    Is there a want for this? Would anyone buy it?

    I am pretty good a SW (masters degree and all) and would make it customizable for what to display where, and make things bigger and more colorful as they approach limits the user would setup. Any suggestions, ideas or sensor help would be greatly appreciated. I will post my progress....

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  3. #2
    Registered User djrez4's Avatar
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    Both HKs and Defi already make a system like this. HKS calls it CAMP and requires a separate LCD monitor and Defi sells an LCD monitor that attaches to their gauge control module.

    Defi system

    HKS CAMP
    Deliberating enclaves of like-minded people are often a breeding ground for extreme movements - Cass Sunstein

  4. #3
    Registered User cranium's Avatar
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    Those are pretty cool, but they require you to run more sensors. I was looking at taking advantage of the data already sent to the ECU, and specifically making it for the WRX.

    Thanks for the links, though. They are definitely around the same ballpark that I would like to do (especially the HKS CAMP).

  5. #4
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    if you want this and have the $$$$ buy the stock lcd for the skyline R34 and custom fit it for your dash and wiring

  6. #5
    Registered User cranium's Avatar
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    So after some research, it looks like I am going to start at the OBD-2 route and check what sensors the WRX has available and how often it updates. I should get my wire and sw on Monday. Provided it is the data I need, I'll start on the windows version of my sw next week.

    If it is not...then I have to start looking at come ecu plugs...

  7. #6
    Registered User djrez4's Avatar
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    Sorry...completely forgot to link to the pinout diagram!! Here it is

    http://www.ravensblade-impreza.com/m...ng/wrxpin.html
    Deliberating enclaves of like-minded people are often a breeding ground for extreme movements - Cass Sunstein

  8. #7
    Registered User Trypsin's Avatar
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    ECUTEK's Deltadash pulls quite a bit from the OBDII port. Check out thier site it gives a list.

  9. #8
    Registered User cranium's Avatar
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    Sweet...looks like I can do any of this data :

    Coolant Temperature
    Air Fuel Correction
    Air Fuel Learning
    Manifold Absolute Pressure
    Engine Speed
    Vehicle Speed
    Ignition Timing
    Intake Air Temperature
    Mass Air Flow
    Throttle Opening Angle
    Rear O2 Sensor
    Battery Voltage
    Air Flow Sensor Voltage
    Throttle Sensor Voltage
    Fuel Injector Pulse Width
    Knock Correction
    Atmospheric Pressure
    Manifold Relative Pressure
    Fuel Level
    Primary Wasetgate Duty Cycle
    CPC Valve Duty
    Tumble Valve Position Sensor Left
    Tumble Valve Position Sensor Right
    Idle Speed Control Valve Duty
    Fuel Pump Duty
    Air/Fuel Sensor Current
    Air/Fuel Sensor Resistance
    Air/Fuel Sensor Voltage
    Rear O2 Heater Voltage
    Air/Fuel Sensor Heater Current
    Exhaust Gas Temperature

    AT Vehicle ID
    Test Mode Connector
    Neutral Position Switch
    Idle Switch
    Ignition Switch
    Power Steering Switch
    Air Conditioning Switch
    Starter Switch
    Rear O2 Rich Signal
    Knock Signal
    Crank Position Sensor
    Cam Position Sensor
    Defogger Switch
    Blower Switch
    Interior Light Switch
    Air-Con Compressor Signal
    Radiator Fan Relay 1
    Radiator Fan Relay 2
    TGV Output
    TGV Drive
    Torque Control Signal 1
    Torque Control Signal 2
    Torque Permission Signal

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