Topic | Logging

Home Forums Mooshimeter Support Logging

This topic contains 6 replies, has 3 voices, and was last updated by  travis poe 1 month ago.

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  • #10716 Reply

    fabltd
    Participant

    Hello

    Is there any documentation on the Login function. I am trying to understand the data the meter is recording to the card. It seems all the data is in one log file. I need to start different log files for different equipment that is being tested.

    Thanks

  • #10719 Reply

    Duane

    You don’t say what app version you are using. I am using the latest android beta release (28) and I do not know the definitive way to force the meter to start a new log file except maybe to open the meter case and press the reset button or remove the SD card.

    The alternative which may be better/easier for your needs is to keep a handwritten record of the start/stop measurement times for each piece of equipment. This time is displayed by the phone, usually top right. This comes in handy anyway since sometimes the meter will start a new file unexpectedly. The timestamps in log files appear to be accurate. I usually post-process the log files in a spreadsheet type program like Excel anyway, so this isn’t such a bad thing to work out of one file. I create a new column B and since I am in the eastern USA time zone I use the following formula =A9/(60*60*24) – 4/24 +”1/1/1970″ to change the first timestamp starting at A9. Then fill down. The “4” in 4/24 needs to be adjusted to your time zone. I format the new column B to time. I can then split the file into multiple files based on the timestamps. Maybe this helps you.
    —- Duane

  • #10722 Reply

    fabltd
    Participant

    Some official documentation would be nice.

    I don’t seem to be able to get a response from the manufacture though email.

    The data in the produced file makes no sense.

    UTC TIME SEC CH1 AMPS DC CH2 VOLT DC CH1 AMPS AC CH2 VOLT AC
    1469018060 6.88E-02 4.99E+01 0.00E+00 0.00E+00

    How do i convert the AMPS and Voltage into their normal representation.

    Thanks

    I am using the IOS app BTW.

  • #10724 Reply

    Duane

    fabltd,
    Yes, I certainly agree with you. We all want better documentation. And we want the meter software improved in many areas, which many times also necessitates changes to the documentation. I am a user; I do not speak for the manufacturer, James. I try to help here because I really like this meter and even with its limitations, there is nothing else on the market at this price. James is usually very responsive in this forum, but my guess (and it is just a guess) is he is busy with the new IOS improvements (good for you) and hopefully more android improvements (good for me).

    As to the data in your file: This appears similar enough to android files, so maybe the following will help. You really need to post-process the data in a spreadsheet type program on a PC. I use Microsoft Excel.
    1469018060 is the time stamp. I provided the conversion to local date/time in the previous post.

    6.88E-02 represents the measured CH1 value in scientific notation, 6.88 times 10 raised to the -02 power. In Excel, highlight the column, right click the mouse, choose format cells, select number to 4 decimal places. The result in the spreadsheet will be 0.0688. The unit is amps. If you prefer mA, insert another column in the spreadsheet and use the formula =B9 *1000. This assumes the value was in cell B9. The result will be 68.8. Use fill down to change every row in the spreadsheet.

    4.99E+01 same as above except for CH2. Looks like you were measuring about 50VDC.
    — Duane

  • #10725 Reply

    ville

    @fabltd.

    You should be able to format those values as “normal” numbers in spreadsheet-programs (I’m using libreoffice, excel should work about the same).

    I had little problem with finnish locale at my computer, becouse of decimal-separator, that is different in usa, so i had to import mooshi-csv:s in “american english”, which is easily selectable in libreoffice when opening those files. Not sure how excel would handle that. If you cant do any maths with your values, then this locale difference is probably reason for that.

  • #10749 Reply

    James
    Keymaster

    Hi guys,

    Thanks again Duane and Ville for stepping in and providing assistance. Sorry I fell behind in the forums.

    The beta apps and firmware will soon move to production. I’ve started working on documentation – these are not finalized but they are a good start. Soon they will be linked in to the support hub:
    https://moosh.im/logging-with-the-mooshimeter/

    Regarding log file creation question:
    Up until the version of firmware released today (>1469xxxx), a new log file is created every time there is a write error. So if you remove and re-insert the SD card, you will see another log file there. On some flaky SD card setups, this behavior would cause hundreds of small files to be generated because write errors are quite frequent. One of the things I’ve been working on for the last few weeks is error recovery. In the new firmware, a new logfile is generated when the user turns logging off and on again from the app, or if a blank SD card is inserted. Otherwise, logs are appended.

    Thanks
    ~James

  • #22572 Reply

    travis poe

    to simplify the formula I use =A9/(60*60*24)-5/24+25569.”5/24″ being CDT. 25569 is the numeric value of 1/1/1970

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