The ECUVIEW [PRELIMINARY, Not set down!]

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ECUView Firmware Copyright 2001-2002 by laser92awd. All rights reserved. May not be reverse-engineered, decompiled, or reproduced in any way. Contains sample software from Arizona Microchip.

ECUView Firmware Version 1.0, ECUView Hardware Version 1.0
  • Initial version
  • Displays knock sum
  • Shows incorrect timing advance

  • ECUView Firmware Version 1.1, ECUView Hardware Version 1.0a
  • Fixed jittery display
  • Fixed Power On Reset (HW 1.0a)
  • Timing advance display works (Note: negative timing produces weird results)
  • Started peak hold routines, nonfunctional in this revision.

  • ECUView Hardware 1.1 PCB prototype
    ECUView Firmware Version 1.2, ECUView Hardware Version 1.0a
  • Fixed Peak Hold routines(untested)
  • Changed negative advance to print E1 through E6, where E means nEgative
  • Started changing input routine to allow more input selects
  • Version 1.2a (longer hold time) will be first distributable version!
  • Version 1.2a also prints out a negative sign instead of "E".

  • ECUView Firmware 1.3 - Scrubbed, totally broken.

    ECUView Firmware Version 1.3a, ECUView Hardware Version 1.1
  • Pushbutton Selectable input selects
  • See HW 1.1b/SW 1.3b for pushbutton selects. The regular version has four buttons and correspond to indexes 0 through 3 as below. There is no indication on the display on what mode the device is in.

  • ECUView Hardware 1.1b PCB Production PrototypeNote: A0 board, has pcb defects
    ECUView Hardware 1.1b PCB Production PrototypeAlternate/A1 revision
    ECUView Firmware Version 1.3b, ECUView Hardware Version 1.1b
  • Use ONE push button to go through all the modes.
  • Couldn't fit as many switches onto the PCB so they were minimized.
  • There are 8 modes to cycle through for this version, though only the first 3 are "normal" modes:
    0|-5Knock Sensor Realtime
    1|-HKnock Sensor, high count held for a few seconds
    2ttTiming Advance, degrees, w/o base timing
    3t|-UNSUPPORTED: Throttle Position Sensor (RAW data) or SUPPORTED: Throttle Position Sensor percentage (0-99%)
    4H4 or 50UNSUPPORTED: O2 Sensor Voltage (Rough Estimate)
    5H5 or 1CUNSUPPORTED: ISC steps (RAW data) (Removed on newer versions)
    6H6 or CtUNSUPPORTED: Coolant Temperature (RAW data) (Coolant Temperature, Fahrenheit, multiply by 10 to get real reading)
    7H7 or 11UNSUPPORTED: Injector Pulse Width (RAW data) or SUPPORTED: Injector Duty Cycle (0-99%)
    Some of the modes may have changed. I think I swapped modes 1 and 7 because of an issue with the PICs not wanting to remember what mode it was in last, but this has been fixed.
    Revision 1.3c: Fix injector duty cycle. Bug reports wrong duty cycle, fixed in this release.

    ECUView 1.2 Hardware solderless Prototype
    (Planned) ECUView Firmware Version 1.4, Hardware Version 1.2
  • Save the last display selection across restarts/power cycles instead of defaulting to knock sum
  • Capability to use more than 2 displays to monitor two stats at one time.
  • Hardware rewire needed, not compatible with 1.0 and 1.1 boards, but board cost changes only slightly (3rd/4th display is largest cost)
  • This is the revision which the MPEG was recorded.

  • Possible improvements

    ECUView 1.2+ Proof of Concept1.2+ Proof of Concept
    ECUView 1.2+ First Revision PCB1.2+ Prototype 1-sided PCB Revision
    ECUView 1.2+ Final PCB???1.2+ Work/Shrunk PCB
    ECUView 1.2+ Tiny1.2+ 2.1"
    Hardware Rev 1.2+
  • "Plus" (+) versions of the hardware represent versions with the datalogger cable integrated

  • "Plus" circuitry completed. Implementation is successful.

  • This is the revision that's in my car. If you chance upon a beat-up black '92 Plymouth Laser RS AWD in Northern Colorado, you might see it on my dashboard. (No, it's not in an A-pillar for now. Don't want to attract too much attention as my car is really slow.)

    (Depending on sales, not planned) ECUView Firmware 2.0, HW Revision 1.2(! - same HW should work fine.)
  • OBD2 version, if I ever get an OBD2 car.

  • (Depending on interest, and ADDITIONAL parts cost) ECUView HW Revision 2.0
  • Use a cute 2-line backlit LCD module instead of LEDs. This will probably double the cost of the device. The LCDs are *not* cheap!
  • 70% chance of using the AVR 90S2313 instead. Dealing with the possibility that the "Plus" circuit won't work.
  • Design work is in progress.
  • Supplemental information
    MPEG demo of ECUView 1.4 Prototype (HW 1.2A). 330KB
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    Last changed December 2002