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Another MK HL conversion

Discussion in 'Cinestar 8' started by Dave Bush, Jun 28, 2014.

  1. Dave Bush

    Dave Bush New Member

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    @Dave King - did you have to change any of the motor timing settings for the U5's?
     
  2. Dave King

    Dave King Well-Known Member

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    I use 24 degrees timing.
     
  3. Dave Bush

    Dave Bush New Member

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    Thanks Dave, other than the updated firmware on the blctrl3 are there any other settings you think I should look out for with the U5's?
     
  4. Dave King

    Dave King Well-Known Member

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    Nope. All my settings are stock.
     
  5. Dave Bush

    Dave Bush New Member

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    more than 3 hours updating all the Blctrl's last night... All but 2 of them took a lot of fiddling to connect - I ended up trying all the methods including a last ditch effort using direct solder to all points, what a ludicrous process to update some software
     
  6. Dave King

    Dave King Well-Known Member

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    I feel your pain.
     
  7. Steve Maller

    Steve Maller UAV Grief Counselor

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    I've yet to do the 1.04->1.06 update. I'm thinking of fashioning something out of alligator clips or something. The little 10-pin hack is awful.
     
  8. Dave King

    Dave King Well-Known Member

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    I"m interested to see if you notice any change to how your copter motors sound and or respond. I notice a difference.
     
  9. Steve Maller

    Steve Maller UAV Grief Counselor

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    I'm not in any rush. The copter's flying beautifully right now. And I don't have plans to tear it down at the moment. Given Holger's admonitions, I intend to do the updates whilst the power board is completely off the copter on my workbench and jacked into my bench DC power supply.
     
  10. Dave Bush

    Dave Bush New Member

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    Wow just finished Maiden testing today with 5lbs of diving lead - 3 years of flying MK kit I have never had it flying that smoothly, it sounds really nice too, the combination of props and motors humming away is very comforting... Still lots of testing and a few updates to make but just wanted to say thank you guys, I have been glued to your build threads for what seems like an eternity @Dave King and @Steve Maller they were extremely helpful.

    A couple of pics...



    photo 1.JPG

    photo 2.JPG
     
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  11. Steve Maller

    Steve Maller UAV Grief Counselor

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    Congrats, Dave. That feeling of giving a new bird its wings is really wonderful. Glad it worked out. Continued success!
    Steve
     
  12. Dave King

    Dave King Well-Known Member

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    Hi Dave

    Great to hear! One suggestion I like to recommend is to do something with your motor wires. They either need braided tight, heat shrunk, or even taped together using electrical tape. Since your wires are cut down they probably wont be long enough to braid but I would at least tape them together. I can see potential issues with magnetic fields using GPS if your wires have gaps in them.

    Dave
     
  13. Dave Bush

    Dave Bush New Member

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    Thanks Dave, I used to have them braided through the the booms but not enough length on the 520'ish booms, I didn't shorten them just wound them round the booms but think I will heat shrink them all and braid to get the right length as I'm reluctant to cut and re-solder. Definitely sticking with wires outside the booms for ease of disassembly/assembly
     
  14. Dave King

    Dave King Well-Known Member

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    You could just tape them up tightly and then use flex wrap over them to dress them up and nobody would know the difference.
     
  15. Dave Bush

    Dave Bush New Member

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    Good idea - do you have any suggestions for which flex wrap to use?

    Also, how do you guys make sure your ribbon cables don't work loose? I'm currently using hot glue but it's not very practical
     
  16. Dave King

    Dave King Well-Known Member

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    I get mine here
    http://audio-video-supply.markertek.com/search#w=Techflex

    I use hot glue and I find it to be very practical. I just use a dab of it and when I need to remove the connector I use a small flat blade screw driver to pry the glue off. Works every time.
     
  17. Andy Johnson-Laird

    Andy Johnson-Laird Administrator
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    One trick that I've used to release hot glue is to put some isopropyl alcohol on a Q-tip, and dab it around the edges of the hot glue -- it capillaries under the hot glue and it pops right off.

    Andy
     
  18. Steve Maller

    Steve Maller UAV Grief Counselor

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    OK, I learned something new today. I can commence drinking now. :rolleyes:
     
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  19. Dave Bush

    Dave Bush New Member

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    Cheers will keep the hot glue!

    First tests today with actual payload, all seemed to go well using single Tattu 10,000 mah - I just wanted to see if anyone has any views on the GPX

    Ambient temperature was about 20 Degrees C, low wind.

    MK Version: FC HW:2.5 SW:2.06e + NC HW:2.0 SW:2.06i + BL HW:V3 SW:1.06

    Flight date: 21/07/2014 19:14:03
    Flight time: 19:14:03.0 - 19:27:26.6 (803 secs, 00:13:23)
    Batt. time : 803 secs, 00:13:23

    Start Lat./Lon. : 51.45501 / -2.697646
    Elevation(GPS) : -4.461 11.23 19.661 m (min/avg/max)
    Altitude(Barom.): -0.05 16.14 26 m
    Vertical speed : -1.23 -0.01 2.11 m/s
    Max speed : 15.7 km/h
    Max target dist.: 13.5 m
    Max distance/LOS: 48.3 m / 54.4 m

    Sats : 11 11 12

    Voltage : min. 21.4, max. 24.7 V
    Current : 0.5 33 48.6 A
    Wattage : 11 754 1040.04 W
    Capacity: 7393 mAh

    Motor1: 0.0 3.9 6.6 A Temp: 25 27 30 °C
    Motor2: 0.0 2.8 5.3 A Temp: 24 25 28 °C
    Motor3: 0.0 3.8 6.3 A Temp: 24 24 28 °C
    Motor4: 0.0 4.1 5.6 A Temp: 24 29 32 °C
    Motor5: 0.0 4.9 7.3 A Temp: 23 27 31 °C
    Motor6: 0.0 3.9 5.4 A Temp: 27 32 34 °C
    Motor7: 0.0 3.7 5.2 A Temp: 24 30 32 °C
    Motor8: 0.1 3.8 6.5 A Temp: 24 28 31 °C

    Magnet Field: 93 94 97 % (ok)
    Magnet Inclination: 59 64 71 deg

    No errors found ;)
     
  20. Steve Maller

    Steve Maller UAV Grief Counselor

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    Looks like it didn't even break a sweat. I generally burn about 1000mA per minute of flight time with my big copter, and you are at almost 1/2 that. What kind of AUW/payload are you testing?
     
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