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Thread: adding wideband o2

  1. #31
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    Quote Originally Posted by gregs78cam View Post
    I believe he is talking about "Packet Offset ( H / D)", the H/D stands for Hex or Dec. Change the second box (decimal) to 65 or whatever works.
    Right!

    Quote Originally Posted by hammertime371 View Post
    well the guage i just grounded in cab. so i will change it tommorrow. i dont see where you change 67 to 65.
    Read that post again. I edited it. The reason the AutoProm channels are differant is because of each mask having differant amount of return bytes, AutoProm is added to end. So $42 is only 20, others are 63 etc...

    EDIT: Got this from Moates

    The APU1 will send that information as six bytes after your payload. i.e. if you have 63 bytes in your packet, 64-70 will be the ADC data.
    MSB1 LSB1 MSB2 LSB2 MSB3 LSB3 So it is 22 for channel 1, 24 channel 2, 26 channel 3 in $42.

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  2. #32
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    Quote Originally Posted by gregs78cam View Post
    So you have a 0V to 5V that is going into the APU1. The APU1 must have an internal A-D conversion to 1024. Then we need to convert that 1024 to a usable dash value. I don't know if this is right, but this is what I would try.........

    So 0 = 10.0:1
    1024 = 20.0:1

    So.....ADX conversion is " (X * 0.009765625) + 10"
    X is the 0-1024 steps * the conversion factor, plus the 10:1 base AFR.
    OK but how did you come up with that conversion factor?

    PJG113 says in $E6 he used (X*0.009765625)+10 which is what you came up with. This looks like it's based on 1024 from AutoProm.

    $0E says 10 to 20 AFR as "X * 0.039063 + 10.000000. Which may be based on 256 from ECM?

    I need to come up with one for 0V = 7.35 AFR and 5V = 22.39 based on both 256 and 1024?

    EDIT: Ha! I did math!

    AFR of 10 to 20 is a difference of 10 divided by 1024 = 0.009765625

    AFR of 10 to 20 is a difference of 10 divided by 256 = 0.0390625

    So for the LC-1 WideBand 0V = 7.35 and 5V = 22.39
    AFR of 7.35 AFR to 22.39 is a difference of 15.04 divided by 1024 = 0.0146875
    AFR of 7.35 AFR to 22.39 is a difference of 15.04 divided by 256 = 0.2685714285714286

    So the AutoProm's 1024 is 4 times more accurate then a ECM/PCM 256. If that makes a hill of beans here...

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  3. #33
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    well it seems to work for the wb volts. the wb afr is pegged at 20. heres a short log with wb in the stream. see if it looks right.
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    Post up your ADX so I can see what your reading. I get nothing and I tried all three address, actually I tried 21, 22, 23, 34, 25, 26... notta... did you have the AutoProm switch set to AutoProm? Not passthrough? I'm not sure but from above Moates video it sounds like it does nothing but passthough on passthrough ie.. not getting APCH channels...

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  5. #35
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    ok so im using the last adx you posted...i just replayed the log i posted and it dosnt show on mine either... I guess thats not being recorded in datalog. i used starter dash and just changed the speedo to apu1 afr and tack changed to wb volts. my screen is small so i cant see the whole dash screen. its set to 22 and the switches were set to atuoprom not pass through. the other is set to disable aldl like i normaly would be for logging
    Last edited by hammertime371; 04-12-2012 at 07:21 PM.

  6. #36
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    If both switches are in, and you have ground wire from AutoProm to block, and white wire from Wideband to channel 1 (I checked others as well, there was no input anywhere) then it must be the WB controller needs to be configured from your PC. Hook up WB to PC with their software and set the white wire, output correctly, should be 0 to 5 volt.

    Then the other WB wires need to be connected as well, black to ground and red to key on power. Is the gauge working? Digital Volt meter would tell if white wire is putting out correct signal, what is it key on engine off?

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  7. #37
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    Quote Originally Posted by EagleMark View Post
    EDIT: Ha! I did math!

    AFR of 10 to 20 is a difference of 10 divided by 1024 = 0.009765625

    AFR of 10 to 20 is a difference of 10 divided by 256 = 0.0390625

    So for the LC-1 WideBand 0V = 7.35 and 5V = 22.39
    AFR of 7.35 AFR to 22.39 is a difference of 15.04 divided by 1024 = 0.0146875
    AFR of 7.35 AFR to 22.39 is a difference of 15.04 divided by 256 = 0.2685714285714286

    So the AutoProm's 1024 is 4 times more accurate then a ECM/PCM 256. If that makes a hill of beans here...
    Yup you got it.
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  8. #38
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    I knew if I watched you long enough that the part of my brian that was trained with math back in school in 70's would start to work again! You were like PB Blaster for the math part of my brain...

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  9. #39
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    Quote Originally Posted by EagleMark View Post
    If both switches are in, and you have ground wire from AutoProm to block, and white wire from Wideband to channel 1 (I checked others as well, there was no input anywhere) then it must be the WB controller needs to be configured from your PC. Hook up WB to PC with their software and set the white wire, output correctly, should be 0 to 5 volt.

    Then the other WB wires need to be connected as well, black to ground and red to key on power. Is the gauge working? Digital Volt meter would tell if white wire is putting out correct signal, what is it key on engine off?

    the guage has been working all along...i tested the white wire with an ohm meter and gett 2.5 volts at idle...guage shows 14.5 - 15 at idle... so thats right. with engine off and key on it starts at 2.5 volts then slowly goes to 5. guage shows 14.7 with enigine off and then goes to 18. this happens within 10 seconds. i assume that it goes lean as wb warms up

  10. #40
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    Is the voltage on the white wire changing after key on, O2 warmed up then running? Did you look at settings for wideband in software are correct? If so do another log and try and save and I will look for it... we are out of luck with Moates tech support till they open again on the 23rd...

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  11. #41
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    yes it does change. the white wire out put from guage works with volt meter... it changes when i rev it ..it seems to follow what the guage says. it is working...did another log but when i play it back the apu wb volts value does nothing. here is pic of what i see when engine on as well
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  12. #42
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    i dont have a serial port on laptop...i got a usb to serial adaptor ill try it with hyperterminal as instructions suggest

  13. #43
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    It seems your getting a signal, when hooked up try switching from AutoProm to passthrough, close Zif socket although not in instructions I don't think it matters all the videos he does. While still logging move wire from 1 to 2 and 3 for a minute and post log.

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  14. #44
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    ok did what you asked and heres the log... i see that when white wire on channel 1 the volts read correctly. when on channel 2 they read a little low. when on channel 3 it reads a lot low... but i do get signal on all 3... afr is always pegged at 20 ... switching to pass through i lose all signal
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  15. #45
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    That proves your getting a signal on all three channels, the conversion factor is not correct on 2 and 3.

    But there is nothing in the log, I watched the entire log on all three channels MSB and LSB and notta... but I light just went off in my head and I think I know why!

    Stay Tuned!

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