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krohelm last won the day on November 23 2017

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About krohelm

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  1. krohelm

    PCLink Crashes While Logging

    Thank you for the reply Dave! I'm bummed about the lack of a temp file, but I greatly appreciate your confirmation. The machine has sleep disabled (been bitten by that one several times), and it did not sleep in that 90 minute period either - I always check. I was not looking at my laptop and am unaware of how much memory it was using at the time of the crash. The task manager does not list the process, but procdump shows a suspect message: ``` Only part of a ReadProcessMemory or WriteProcessMemory request was completed. (0x8007012B, -2147024597) ``` Do you happen to cap PCLink memory to 2gb?
  2. krohelm

    PCLink Crashes While Logging

    Thanks Timmy. I did search for llg files yes, but if there's a temporary file it almost certainly won't have llg as the extension. I find ecu logging to be pretty inconvenient and limiting compared to logging all parameters on a computer, but yes I do log via ecu. My ecu log was full though, as it often is due to the small storage space. Clint, thanks for the thoughts, but I've got an i7, an NVME SSD and USB 3.0 on all my ports - pclink is not taxing in the slightest. I've confirmed this by checking the pc equivalent of the activity monitor while logging. I'm not a compulsive person, I can leave the laptop alone. How useful is it to have all parameters logged? It's reasonable to ask for a logging application to (1) not crash and (2) log even when it crashes isn't it? My process is still sitting there, @Adamw any idea whether there's a temporary file or did it crash because it's buffering with a data structure (oom)...? I think I tried to decompile pclink once to answer other questions, maybe I'll try that again today.
  3. krohelm

    PCLink Crashes While Logging

    I have a 2017 Lenovo Yoga 710 using Windows 10. I've disabled auto-sleep while on battery. I went for a drive, roughly 90 minutes, to capture a wide data set for honing my mixture map. Upon return and looking at my laptop screen, I found PCLink had crashed some time earlier. This is a typical experience driving and logging. I frequently find PCLink crashing and losing my valuable logs. My crash dialog box is still up, is there possibly a temporary folder under "AppData" or somewhere that the log data is cached before saving? :-( I tried to get a procdump and attempted to list file handles via sysinternals tools, but the process is not in a suitable state to retrieve anything out of it unfortunately.
  4. krohelm

    Toyota Oil Pressure Sender

    I've only seen their NPT sender, and those Honeywell 150psi senders don't have a BSP option according to the spec sheet. I'll check in with my local fittings & hydraulic supply shop to see what we can come up with. Thanks all!
  5. krohelm

    Toyota Oil Pressure Sender

    Spent a long time measuring this sensor. The resistance does not change when wired in a way that is consumable by an analog input. I should give up on analog input. Even if I can produce PWM from this sensor, I have to link it somehow to "Oil Pressure." I can measure frequency in voltage, but this crazy thing seems to operate via using the voltage to operate the sender, and "send" on the same line by consuming some amount of current periodically. I.e., it toggles a potential increase across a powered line. Found the testing procedure in the FSM, it wants 12v. I gave it that and looked - I got a similar periodic blip in voltage, but it was only slight, nowhere near enough to divide down to get a reliable 1v digital boundary. It's hard for me to measure an in series resistance wave form, or graph an amperage waveform. I think I need to give up on using this sensor. It's going to be a real hassle finding one that'll fit this space!
  6. krohelm

    Toyota Oil Pressure Sender

    A very fair request! Here's what I've tried: This was my first try, still seems like it should work... I've varied the resistance from 100 to 460. Via math, my sensor's resistance seems to sit around 66ohms regularly. This should work if it's doing something PWM-y, but there's no PWM activity from the multimeter (should read like 0.75hz with engine off) but if it's using the power incoming from the ECU to drive the sensor, maybe the built-in pullup is too restrictive. Tried a couple different resistors to get the original voltage graph to below 1v, but in no case have I observed PWM (even via multimeter) while this sensor is hooked up to a digital input. Am I wiring this wrong? :-) That would be great.
  7. krohelm

    Toyota Oil Pressure Sender

    With the 100 ohm pull-up, the digital input does not fire. I've been told the transition point for digital inputs is ~1 volt. Look up at that first graph to see it doesn't really cycle that low with a 100 ohm pull up. Would be great if that were configurable!! The graph above could indicate a 66 ohm resistance when "on" or "low," so I'd need a 600 ohm pull-up to get to 0.5v when driven "low." With a greater resistance on the pull-up, the modulating behavior is not observed anymore, but the input is still rock steady while running (despite great rpm swings at operating temperature) as observed by AN4. Either the ECU's +5v is overloaded and cycling with a 100 ohm load (seems unlikely) or the current offered through a 600 ohm resistor is not sufficient to charge whatever's in that pressure sender bulb and get the PWM on DI-1.
  8. krohelm

    Toyota Oil Pressure Sender

    It's not 1/8 npt, it's BSP thread... You can do adapters, but darn it, there's already a sensor there and a wire to it :-) I'll try a digital input and see what's there - but seems like the analog input would have shown some change with a wide pressure swing... Definitely want to understand how to map frequency to oil pressure if this is the case! Check the log, it isn't floating - it cycles. +5v -> 100ohm -> AN4 and Sender -> Ground If Sender is Open, AN4 should be 5v. If I put 4.7k ohm to ground, AN4 should read 4.9v if the sender is open, right? What does that gain over just 5v without the extra divider path to ground?
  9. krohelm

    Toyota Oil Pressure Sender

    The engine off graph, there's definitely no loose wire. Nothing is moving, it's on a lift, I've audited the wire all the way to the gauge. It's an 80's Toyota gauge haha :-) Dash gauge is removed, the entire cluster has been replaced by a custom display I made from scratch... I've read in the factory service manual that the gauge sends pulsed voltage to the gauge, and that to test it you put a light in series with the gauge, start the car and watch it flash faster as engine speed (oil pressure) increases. In the second graph, the engine is warming up, and is approximately 170f. The needle would normally swing quite noticeably between 900rpm and 3400rpm at warm temperatures. (i.e., 1/4 to 4/5 at this temperature) 0-2v would be totally fine. According to the 5v supply, 100 ohm r1 value and observed 1.56v on AN4, the sender sat at 47 ohms while the oil pressure swung at least 30psi.
  10. krohelm

    Toyota Oil Pressure Sender

    Toyota 4age with the factory oil pressure sender: How do you read the pressure from it? It's not the switch, it's the sender for the pressure gauge on the instrument cluster. I wired it to +5v with a 100 ohm divider, and measured the voltage using AN4 thinking I'd just map resistance to pressure. Here's what AN4 does while the engine isn't running: And with the engine running, revs changing dramatically, it just sits within a couple hundredths of a volt: The sender is a Toyota 8352035031. How do you measure the output? Toyota Oil Pressure Sensor AN4 Log 2018-01-28 2;18;37 pm.llg
  11. krohelm

    JSON/XML Representation of .pclr

    I forgot this was requested already and came here to ask for it again :-)
  12. krohelm

    1980's Toyota VSS

    This is brilliant, I'll keep it tucked away somewhere safe. I have not found even the hour necessary during the day to take the measurements. I may just plan on the CAN dash since I'm also planning out a supercharger once the release cycle at work settles down... but I still owe the scope measurements!
  13. krohelm

    1980's Toyota VSS

    Yes, this is an AW11 mr2. The speedometer itself generates the signal. Genius engineering, carry the mechanical cable up to the front, then the low voltage signal wire all the way to the trunk... I'm measuring with the probes on the speedometer terminals itself, with a spare speedometer I have on the bench. I'll measure at the ECU next, with & without pullup. It'll be a couple days before I'm able to, but the captures should be helpful.
  14. krohelm

    1980's Toyota VSS

    1987 MR2 generates a pretty weak VSS signal from the speedometer reluctor. Is there any point in even attempting to clean this up? Is it time to go digi-dash? The images cover a 200ms duration. For the 60mph one: 1026 revolutions per mile / 60 = 17.1 revolutions per second * 0.2 second window = 3.42 revolutions of the reluctor in the windowIt just looks like a mess, more useful for "is the car moving or not" than actual speed. Additionally, the signal amplitude rarely exceeds 500mv, and the Monsoon digital inputs are reported to require 1v to derive a signal. This doesn't even hit 1v on a peak-to-peak sweep...
  15. krohelm

    VE way too high

    Nice! 4, 5, 6 are much simpler. I thought too hard on that one. I don't know how to dial in Charge Temp Correction, but I've zeroed out the warmup table and the post start table. CTC should handle all this once I figure it out, and what's in the table is close enough to keep it running while I work on it. Thanks Ducie, I've learned a lot from what you've shared.