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James

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Posts posted by James

  1. Do you have the Watt-hours set correctly for the battery? Normally, it will only correct if the voltage reading differs significantly from what it expects based on usage. Alternatively, your battery may have a different low battery falloff from the standard LiPo curve we include with EScribe.

  2. Are you charging with a 24-gauge cable? Many USB cables aren't capable of pushing 2 amps. Some sub-$1 6ft ones I use for other purposes top out at 0.3A or so. :)

    Monoprice's 24AWG micro B will definitely work. They're only about $1.50 on Monoprice's own website. Kind of bulky though.
    I would give you a link but it appears the "free" forum service we are using replaces Amazon links with Wal-Mart links. Grr.
    I like their $3 "premium" USB cables as well, though I haven't tested a 2A charge with them. Really, any 24-gauge cable will do.

    Also, when the battery is nearly full, charge will be put in more slowly so as to not overcharge the cells. We don't let any of the cells go over 4.20V.

  3. We bought a Mac Mini yesterday to test on.

    In my testing with VirtualBox...
    If the firmware update has a problem, the DNA goes into its bootloader/recovery mode. You need to add the bootloader device (it just shows as a serial number) in USB Devices. Once you do that, if you reconnect it, it does detect. (It seems that the effects of VirtualBox settings changes are only seen after a reconnect.) After that I had no problems doing firmware updates on Mac OS.

    In my testing with Parallels...
    Parallels was about the same, except it seemed to have trouble detecting when I disconnected the device. The Windows XP image I was using still thought it was connected. Also, it was very slow to detect the connection.

    So the real problem with both of these is they don't automatically hand over the DNA 200 to the virtualized OS. If you make sure both the normal device and its recovery mode get handed over, though, it works okay.

    On both I *did* find that USB is slower under virtualization. I raised the timeouts from 750 milliseconds to 2 seconds in my test version, which made for less spurious errors.

  4. Has this happened to anyone who is not on 8/21?

    The battery meter has changed because that message indicates it accidentally restarted without savings its settings. Most likely it indicates a firmware bug.
    Do you have any special settings presently? If so, could you attach them please?

  5. The board should be totally fine doing Battery Analyzer.
    IIRC we did the stock curves using a LiPo at 50W, using resistor blocks and no fan.

    The Board Temperature sensor will protect well before the board should have any problems, and even at high powers it takes a while to get that hot. I admit I've not tested with a fan present, but I can't see that making a difference unless the Board Temperature sensor was being cooled by the fan better than the rest of the board...  What power were you doing the test at?

    Hmm.
    Send Help Desk a ticket for a replacement, and have them send the board to us to take a look at. We'll see what we can see.

    Thanks!

    James

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