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Thread: SkyRC — IFA 2014 — MC3000 charger-analyzer

  1. #4621

    Default Re: SkyRC — IFA 2014 / CES 2016 — MC3000 charger-analyzer

    i am just guessing:

    the program is REFRESH. so you get 3 values, charge1, discharge1, charge2. to some users it is not clear which of these values is displayed on the End screen of mc3000 device vs. mc3000 android app

  2. #4622
    Enlightened
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    Default Re: SkyRC — IFA 2014 / CES 2016 — MC3000 charger-analyzer

    I've managed to get the internal temp for my MC3000 to 70c (and fan on high) just discharging 4 x 18650 at .75 mA - then I put a laptop cooler (big single fan) under it and got it down to only 60c.

  3. #4623

    Default Re: SkyRC — IFA 2014 / CES 2016 — MC3000 charger-analyzer

    Quote Originally Posted by Benediction View Post
    I've managed to get the internal temp for my MC3000 to 70c (and fan on high) just discharging 4 x 18650 at .75 mA - then I put a laptop cooler (big single fan) under it and got it down to only 60c.
    Seventy degrees Celsius (158 F), discharging 4 x 18650 at even less than 1A/bay discharge rate?

    That's horrible thermal management.
    Last edited by tatasal; 03-30-2017 at 10:43 PM.

  4. #4624

    Default Re: SkyRC — IFA 2014 / CES 2016 — MC3000 charger-analyzer

    Just got my MC3000 from Gearbest!

    It comes with FW1.3 which I assume is the latest. It is a HUGE charger! With a steep learning curve to operate. The settings in the smartphone app (Android and iOS) are not as detailed as those in the unit itself.

  5. #4625

    Default Re: SkyRC — IFA 2014 — MC3000 charger-analyzer

    Quote Originally Posted by Mp0w3r View Post
    So I just got my SkyRc MC3000 in the mail and I think there's something wrong with the fan, it has a buzzing sound coming from it, I took a video of what the fan sounds like.


    Mine sounds exactly the same. Have you found the problem? Solution?

  6. #4626

    Default Re: SkyRC — IFA 2014 — MC3000 charger-analyzer

    Quote Originally Posted by maukka View Post
    That's very clever. I'd been using my older MC3000 with snapped posts with some random pieces of fill to achieve contact. Took it apart and put some cable ties in there, but must've shorted something out while putting it back together since now I get the following error from the ADC (MCP3424-1 Err). Tried reassembling it and checking that everything's ok, but the charger doesn't seem to recover from it. At least I have a spare...

    Same problem here. Any Solution to this? Thanks.

  7. #4627
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    Default Re: SkyRC — IFA 2014 — MC3000 charger-analyzer

    Regarding MCP3434 error - this might not be the issue but make sure that no USB cables of any kind are connected to the unit before powering it on.
    If you have a usb cable connected between your computer and the box, before applying the main transformer power, the unit will "appear" to be on but non-functional.
    That is due to the 5v of power it is getting from your computer over the USB cable.

  8. #4628

    Default Re: SkyRC — IFA 2014 — MC3000 charger-analyzer

    Hello,
    I was wondering how you got DataExplorer to work with the MC3000?

    Do you use a USB to TTL Serial converter?
    Is there a post somewhere explaining the steps to connect the MC3000 to DataEplorer?

    To me, it appears that DEX is expecting a Serial Port...not a USB HID port.

    I tried just connecting several USB Data cables but that didn't seem to work.
    The Only Ports that show up in Device Manager are HID and those do not show up in DEX.
    There must be some extra steps?

    Oh, the PC Link software connects just fine and works well so it "probably" isn't the USB cable.

    Thanks
    Last edited by OttaMattaPia; 03-31-2017 at 08:23 PM.

  9. #4629

    Default Re: SkyRC — IFA 2014 — MC3000 charger-analyzer

    Nope... nothing about a Serial converter... Just an USB cable...
    Have you configured it??... You must go to Device selection and port configuration and choose the MC3000-Set device. There is a message where is explained very well. Let me to search it for you...

  10. #4630

    Default Re: SkyRC — IFA 2014 — MC3000 charger-analyzer

    Quote Originally Posted by OttaMattaPia View Post
    Hello,
    I was wondering how you got DataExplorer to work with the MC3000?
    Just a question for you...
    Is the MC3000 Monitor working?? Have you tried it??
    http://www.skyrc.com/index.php?route...ownload_id=170

  11. #4631

    Default Re: SkyRC — IFA 2014 — MC3000 charger-analyzer

    Quote Originally Posted by cpa View Post
    There is a message where is explained very well. Let me to search it for you...
    I think there is another one more extended... but this would be useful anyway
    http://www.candlepowerforums.com/vb/...=1#post5004120

  12. #4632

    Default Re: SkyRC — IFA 2014 — MC3000 charger-analyzer

    Thanks cpa

    I believe I had followed those steps and it didn't work but I'll follow the steps posted verbatim and see if that makes a difference.
    Will give it a try again today.

  13. #4633

    Default Re: SkyRC — IFA 2014 — MC3000 charger-analyzer

    Quote Originally Posted by OttaMattaPia View Post
    Thanks cpa

    I believe I had followed those steps and it didn't work but I'll follow the steps posted verbatim and see if that makes a difference.
    Will give it a try again today.
    r u on Windows?
    basic troubleshooting on Windows:
    - you need to have the latest Java Runtime Environment JRE installed, see java.com download
    - the bit-version of Java must match the bit-version of DEX (32-bit Java for 32-bit DEX, 64-bit Java for 64-bit DEX)

    After pressing "Start gathering", the DEX software waits for data, so you must press <Enter> on your charger.

    @cpa , my raspi alu case got shipped , will take at least 4 weeks to reach me through Surface Mail . I am planning to review it and youtube , will be some phun!
    Last edited by kreisl; 04-01-2017 at 06:02 AM.

  14. #4634

    Default Re: SkyRC — IFA 2014 — MC3000 charger-analyzer

    cpa...you da MAN!

    I followed the exact instruction syou posted and now it's logging data so....

    Thank you so much !

  15. #4635

    Default Re: SkyRC — IFA 2014 — MC3000 charger-analyzer

    Quote Originally Posted by kreisl View Post
    r u on Windows?
    basic troubleshooting on Windows:
    - you need to have the latest Java Runtime Environment JRE installed, see java.com download
    - the bit-version of Java must match the bit-version of DEX (32-bit Java for 32-bit DEX, 64-bit Java for 64-bit DEX)

    After pressing "Start gathering", the DEX software waits for data, so you must press <Enter> on your charger.

    @cpa , my raspi alu case got shipped , will take at least 4 weeks to reach me through Surface Mail . I am planning to review it and youtube , will be some phun!
    Yes, thanks
    Must have simply been the ORDER in which I was connecting things.
    All good now!

  16. #4636

    Default Re: SkyRC — IFA 2014 — MC3000 charger-analyzer

    Quote Originally Posted by amf14 View Post
    Mine sounds exactly the same. Have you found the problem? Solution?
    I opened my unit and found nothing rubbing and everything looked good, I put it back together and the fan buzzing noise was gone

    I have no idea what was causing the problem, but just opening the unit fixed my fan issue.

  17. #4637

    Default Re: SkyRC — IFA 2014 — MC3000 charger-analyzer

    Quote Originally Posted by Mp0w3r View Post
    I opened my unit and found nothing rubbing and everything looked good, I put it back together and the fan buzzing noise was gone
    I have no idea what was causing the problem, but just opening the unit fixed my fan issue.
    Good to hear you fixed it. Good work.

  18. #4638

    Default MC3000 charger-analyzer - Changing the log entry interval

    I've been reading the manual and searching this thread but come up short.

    I'm trying to reduce the number of log entries in the TABLE VIEW from one every second (or so) to one entry every 30 seconds.

    Time Base / Time Step does not seem to change to actual sample interval.
    In the Time Base Screen under Time Step I have a units of msec (milliseconds) and 1.0.
    So I assume that means the logging interval is ONE Millisecond....or 1000/of a second
    So, I thought changing the Time Step to 1000 would change the log interval to 1 second, therefore changing the Time Step to 30000 would make the log interval 30 seconds.
    Didn't work like that.

    I've tried adjusting the settings in the configuration and preferences that I thought would do that and it seems it did change the displayed time interval on screen, but the entries were still coming every second.

    Where in the manual can I find this information or where in this thread?

    Thanks
    Last edited by OttaMattaPia; 04-01-2017 at 08:46 AM.

  19. #4639

    Default Re: MC3000 charger-analyzer - Changing the log entry interval

    Quote Originally Posted by OttaMattaPia View Post
    I've been reading the manual and searching this thread but come up short.
    here my take: you're talking about DEX logging and DEX manual? DEX code samples at exactly 1.0Hz, it is a code cycle thing and also natural to DEX or mc3k api. it is obvious that one cannot increase the (whose?) sampling frequency indefinitely, there has to be a limit. having said that, 1.0Hz is perfect for this logging system. now you want to reduce the logging sample cycle down to once very 30 seconds. that's so low that i don't even know how many Hertz that is. so my take is that i take the 1Hz and be happy. and if i wanted a table with only 2 data rows per minute, then instead of trying to figure it out with Excel i'd launch mma since it sits next to dex anyway (on the raspi, at least lol) and take the 2 data rows with ..lemme think.. probably with the Take command. i am not an expert DEX user so maybe we're overlooking how it could be done in dex the very.

    maybe my take (mma solution Take) s*cks, so if anyone knows how it's done conveniently in DEX or in Excel, please share tanks!
    Last edited by kreisl; 04-01-2017 at 09:17 AM.

  20. #4640

    Default Re: SkyRC — IFA 2014 — MC3000 charger-analyzer

    Quote Originally Posted by kreisl View Post
    here my take: you're talking about DEX logging and DEX manual? DEX code samples at exactly 1.0Hz, it is a code cycle thing and also natural to DEX or mc3k api. it is obvious that one cannot increase the (whose?) sampling frequency indefinitely, there has to be a limit. having said that, 1.0Hz is perfect for this logging system. now you want to reduce the logging sample cycle down to once very 30 seconds. that's so low that i don't even know how many Hertz that is. so my take is that i take the 1Hz and be happy. and if i wanted a table with only 2 data rows per minute, then instead of trying to figure it out with Excel i'd launch mma since it sits next to dex anyway (on the raspi, at least lol) and take the 2 data rows with ..lemme think.. probably with the Take command. i am not an expert DEX user so maybe we're overlooking how it could be done in dex the very.

    maybe my take (mma solution Take) s*cks, so if anyone knows how it's done conveniently in DEX or in Excel, please share tanks!
    Ok. I thought this would be something as simple as just telling DEX to only selectively record a log entry at the interval the user specified...ie...30 seconds, 1 minute etc
    For my purposes, I don't need a log entry every Millisecond. Too many entries. But I'll find a way to filter the output file if necessary.

    I wonder why DEX has a place to change these values if it has no impact on output?
    Oh well. Maybe someone else knows a way?
    Last edited by OttaMattaPia; 04-01-2017 at 09:37 AM.

  21. #4641

    Default Re: SkyRC — IFA 2014 — MC3000 charger-analyzer

    So far, everything on this thing seems to work well. I was skeptical about buying it.

    Even the Bluetooth app works perfectly.
    I find the Bluetooth control very convenient.

    I guess they've worked out most of the issues at this point. Patience pays ;-)
    Last edited by OttaMattaPia; 04-01-2017 at 10:11 AM.

  22. #4642

    Default Re: SkyRC — IFA 2014 — MC3000 charger-analyzer

    Quote Originally Posted by amf14 View Post
    Mine sounds exactly the same. Have you found the problem? Solution?
    I have exactly the same issue. what is this, how can I solve it?

  23. #4643

    Default Re: SkyRC — IFA 2014 — MC3000 charger-analyzer

    Quote Originally Posted by Mp0w3r View Post
    I opened my unit and found nothing rubbing and everything looked good, I put it back together and the fan buzzing noise was gone

    I have no idea what was causing the problem, but just opening the unit fixed my fan issue.
    Quote Originally Posted by Konflikt View Post
    I have exactly the same issue. what is this, how can I solve it?
    Thanks Mp0w3r!

    Maybe loosening the screws a solved it.

  24. #4644

    Default Re: SkyRC — IFA 2014 — MC3000 charger-analyzer

    They must have changed the fans....the one I just received is so quiet I JUST BARELY (If I put my ear right next to it) hear it, but I can feel the air moving and if I put my ear to it I can feel it humming ever so slightly.

    Super quiet fan.

  25. #4645

    Default Re: SkyRC — IFA 2014 — MC3000 charger-analyzer

    What about charging this LTO (Lithium Titanate) Cells?

    http://www.batteryspace.com/LTO-1865...ed-3.12Wh.aspx

  26. #4646

    Default Re: SkyRC — IFA 2014 — MC3000 charger-analyzer

    Quote Originally Posted by dfacex View Post
    What about charging this LTO
    LTO, what's that?

    Haven't heard of it before afaik. Do you have a battery manufacturer's full datasheet PDF? I didn't find it on BU
    Sure we (=cpf community) could add it to mc3k firmware why not, it would be a straight-forward implementation with the charging algorithm being same-old-same-old cc-cv .

    However we need to be clear and agree on the admissible voltage ranges and their defaults, Linden for example doesn't agree with the maximum limit as proposed by BU, and BU isn't consistent with the max limit recommendation either:
    Quote Originally Posted by Linden's Handbook of Batteries
    Depending on the specific lithium-ion battery chemistry that is used, the upper voltage limit on charge, as specified by the manufacturer, is usually limited between 4.1 to 4.3 V. On discharge, the cell voltage should not fall below 2.5 to 2.7 V. Newer lithium-ion and polymer formulations have significantly different over-voltage and undervoltage limits. Phosphate-based lithium-ion voltages have maximum limits near 3.8 V and minimums below 2.0 V. Titanate-based chemistries are even lower, with maximum limits near 2.5 V and minimums near 1.8 V. In all cases, the tolerance for primary detection is typically +/- 25 to 50mV for overvoltage conditions and +/– 50 to 100mV for undervoltage conditions. (…) nominal cell voltage 2.4V
    Quote Originally Posted by BatteryUniversity.com
    BU-205 However, the battery is expensive and at 65Wh/kg the specific energy is low, rivalling that of NiCd. Li-titanate charges to 2.80V/cell, and the end of discharge is 1.80V/cell. (…) Summary Table Voltages 2.40V nominal; typical operating range 1.8–2.85V/cell Specific energy (capacity) 70–80Wh/kg Charge (C-rate) 1C typical; 5C maximum, charges to 2.85V Discharge (C-rate) 10C possible, 30C 5s pulse; 1.80V cut-off on LCO/LTO Cycle life 3,000–7,000
    BU-216 Nominal voltage 2.40V Full charge 2.85V Full discharge 1.80V Minimal voltage 1.50V (est.)
    Any suggestions?

    Lithium voltage option
    {admissible voltage range}
    Default
    LiIon CHARGE target voltage {4.00|4.01|…|4.24|4.25}V 4.20V
    LiIon CHARGE restart voltage {OFF|3.98|3.99|…|4.17|4.18}V OFF
    LiIon STORAGE voltage {3.65|3.66|…|3.99|4.00}V 3.80V
    LiIon DISCHARGE cut-off {2.50|2.51|…|3.64|3.65}V 3.00V
    LiIo4.35 CHARGE target voltage {4.10|4.11|…|4.39|4.40}V 4.35V
    LiIo4.35 CHARGE restart voltage {OFF|4.08|4.09|…|4.32|4.33}V OFF
    LiIo4.35 STORAGE voltage {3.75|3.76|…|4.09|4.10}V 3.90V
    LiIo4.35 DISCHARGE cut-off {2.65|2.66|…|3.74|3.75}V 3.30V
    LiFe CHARGE target voltage {3.40|3.41|…|3.64|3.65}V 3.60V
    LiFe CHARGE restart voltage {OFF|3.38|3.39|…|3.57|3.58}V OFF
    LiFe STORAGE voltage {3.15|3.16|…|3.39|3.40}V 3.30V
    LiFe DISCHARGE cut-off {2.00|2.01|…|3.14|3.15}V 2.90V
    LTO CHARGE target voltage
    {2.60|2.61|…|2.89|2.90}V ? 2.85V ?
    LTO CHARGE restart voltage
    {OFF|2.58|2.59|…|2.82|2.83}V ? OFF
    LTO STORAGE voltage
    {2.25|2.26|…|2.59|2.60}V ? 2.40V ?
    LTO DISCHARGE cut-off
    {1.50|1.51|…|2.24|2.25}V ? 1.80V ?


    hehe. this thread seems to motivate longtime lurkers to (finally) post something (again). hh
    Last edited by kreisl; 04-02-2017 at 03:37 PM.

  27. #4647

    Default Re: SkyRC — IFA 2014 — MC3000 charger-analyzer

    Do you have a battery manufacturer's full datasheet PDF?
    Here it is:
    http://www.batteryspace.com/prod-specs/7472.pdf

    Based on datasheet, my calculations would be:

    Lithium voltage option
    {admissible voltage range}
    Default
    LTO CHARGE target voltage {2.65|2.66|…|2.89|2.90}V 2.85V
    LTO CHARGE restart voltage {OFF|2.63|2.64|…|2.82|2.83}V OFF
    LTO STORAGE voltage {1.90|1.91|…|2.16|2.17}V
    2.04V
    LTO DISCHARGE cut-off {1.50|1.51|…|3.64|3.65}V 1.80V








    P.S.
    BTW I found out, that Sony VTC6 Cut Off Voltage is 2.0V, but why it's not possible to set this value on mc3k?
    Datasheet:
    https://www.imrbatteries.com/content...8650vtc6-2.pdf

  28. #4648

    Default Re: SkyRC — IFA 2014 — MC3000 charger-analyzer

    Sorry, Can't edit my post... in DISCHARGE cut-off i made a little typo

    {1.50|1.51|…|3.64|3.65}V
    must be
    {1.50|1.51|…|2.64|2.65}V

  29. #4649

    Default Re: SkyRC — IFA 2014 — MC3000 charger-analyzer

    Quote Originally Posted by dfacex View Post
    my calculations would be:

    Lithium voltage option
    {admissible voltage range}
    Default
    LTO CHARGE target voltage {2.65|2.66|…|2.89|2.90}V 2.85V
    LTO CHARGE restart voltage {OFF|2.63|2.64|…|2.82|2.83}V OFF
    LTO STORAGE voltage {1.90|1.91|…|2.16|2.17}V
    2.04V
    LTO DISCHARGE cut-off {1.50|1.51|…|2.64|2.65}V 1.80V
    Great 2 pdf's and thanks for your voltage range suggestion! I think you got Storage and Discharge wrong, they are not following the original scheme. According to the Design Spec the original scheme be that
    CHARGE ∩ STORAGE ∩ DISCHARGE = Ø
    So how about the following set? Should be error-free now:

    Lithium voltage option {admissible voltage range}
    Default
    LTO CHARGE target voltage
    {2.60|2.61|…|2.89|2.90}V
    2.85V
    LTO CHARGE restart voltage
    {OFF|2.58|2.59|…|2.82|2.83}V
    OFF
    LTO STORAGE voltage
    {2.25|2.26|…|2.59|2.60}V
    2.40V
    LTO DISCHARGE cut-off
    {1.50|1.51|…|2.24|2.25}V 1.80V

    Oh that Sony VTC6 performs exceptional! It will be no problem to lower the lower bound to 2.50V in the firmware, thanks for the pointer, appreciated.


    LTO has been noted in de list, and i would expect this and the 2.50V change to be included in the next firmware update release. But please don't hold your breath, it could take months before the small batch of new k#'s gets processed, finally. the batch must be sizable to make their work time worthwhile or sum ting.

  30. #4650

    Default Re: SkyRC — IFA 2014 — MC3000 charger-analyzer

    I think you got Storage and Discharge wrong
    Yep, you are right about scheme, i missed that point.

    Now it looks good, thanks!
    Last edited by dfacex; 04-02-2017 at 05:40 PM.

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