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Thread: Skylark Dianmu OSD

  1. #851
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    Apr 2012
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    656
    Turn off the compass
    It helps a lot with this problem

    Verstuurd vanaf mijn SM-G920F met Tapatalk

  2. #852
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    Jan 2013
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    Castro Valley, CA
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    Has anyone on this thread set up Dianmu with a v-tail? How about a dual channel aileron set up? I'm thinking about putting my old dianmu in a mini talon im building. Thanks🙂

  3. #853
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    Jan 2015
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    Ventura, CA
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    No GPS info from Dianmu

    Quote Originally Posted by hofftari View Post
    Anyone having issues with the gps?
    I have connected everything correctly and the flight stabilisation works correctly in the air. But the OSD shows that it has found zero GPS satellites and I can't get any data for altitude, speed or position. It has worked once, but other than that it can never find any gps connection. I have tried putting the module outside of the plane below clear sky, but it still wouldn't work. Could it be that my gps module is broken?
    I am having the same problem. Everything worked on the bench, but now that it's buried in the plane, I don't get any gps info. My tiny osd works in the same environment so I know it's not for lack of gps signal. I have read that we should not use the power coming out of the osd, but I don't know why. Could this be the problem? I am powering the vtx from the batt and the camera from the 12v OSD output.

  4. #854
    Any help rebuilding the main board?

    A couple years ago the plug that was attached to the main board that goes to the current sensor came un-soldered. Most of the pad separated form the board along with the plug. I should have tried to do a warranty but i am stubborn and wanted to try to fix it.

    Click image for larger version. 

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    I made a feeble attempt at re soldering them back on and surprisingly it worked, I wasn't going to put it into an expensive plane, but it would work for an OSD. I kind of dropped the project for a year or so and forgot about it.

    Well I was wiring it up the other night and everything was functioning ok, I was working on getting the auto leveling set up and it just went out (no surprise) no video no power to vtx no lights nothing
    After testing I have de-soldered everything and started over, but with very little luck this time.

    This is what i ended with last night.






    Any help on how to "repair" this board where it is not completely useless?
    I figure if I can just find out where to power 5 and 12 volt and ground that it should work if I haven't fried anything (fingers crossed).
    I got it to power 12 volts and light up the VTX, but don't think i have the correct 5 volt or 5 volt ground connection. Should it be different that the 12 volt ground?

    Click image for larger version. 

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  5. #855
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    Mmm thats pretty a mess
    Is your reset button ok
    I saw some glue in it
    You can try to trace the wires to the chip and solder directly

    Verstuurd vanaf mijn SM-G920F met Tapatalk

  6. #856
    Quote Originally Posted by wippo76 View Post
    Mmm thats pretty a mess
    Is your reset button ok
    I saw some glue in it
    You can try to trace the wires to the chip and solder directly

    Verstuurd vanaf mijn SM-G920F met Tapatalk
    thats what i did originally, but it finally stopped working the other night. Any ideas where I can solder to? I don't know that much about PCB boards and was hopping someone could give me some guidance to where to solder the 5 volts and the grounds? Can all the grounds be the same? Seems like it just needs 5 volts and 12 vots to function unless its fired, shouldn't be hard to supply that somewhere else right?

    Edit, just to save a little face. I soldered those a couple years ago with a cheap stick soldering iron and had no idea what I was doing. I have since bought a better soldering iron and have gotten better, but still have no idea what I am doing.
    Last edited by malibu73; 2nd March 2017 at 01:26 PM.

  7. #857
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    You can follow the traces with a multimeter to find another place to solder
    Yes ground are all the same

    Verstuurd vanaf mijn SM-G920F met Tapatalk

  8. #858
    Quote Originally Posted by wippo76 View Post
    You can follow the traces with a multimeter to find another place to solder
    Yes ground are all the same

    Verstuurd vanaf mijn SM-G920F met Tapatalk
    I gave up, I wired 5 volts and 12 volts from another source and got some magic white smoke. I think my career in electronics repair is over. I guess I was lucky to get it to work as long as it did.

  9. #859
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    Mmm i am sorry
    Thats a pity

    Verstuurd vanaf mijn SM-G920F met Tapatalk

  10. #860
    Quote Originally Posted by malibu73 View Post
    Any help rebuilding the main board?

    I got it to power 12 volts and light up the VTX, but don't think i have the correct 5 volt or 5 volt ground connection. Should it be different that the 12 volt ground?
    The 5V and 12V use the same ground
    Skylark FPV Service Center
    http://www.skylarkfpv.com

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