7 thoughts on “The Overkill FPV Ground Station build is finished!”

  5. (sorry for the post here but when I use the contact page I keep getting error messages)

    Hi David,

    First of all: great stuff you show and write!!!
    Makes me very jealous indeed 🙂

    I have I small issue with a voltage regulator which keeps bugging me. I read your build log of the tricopter where you used a LDO Vreg to increase the voltage to your FPV setup.
    I figured you might be able to help me with my problem.

    I recently put a Spektrum transmitter module (the DX5e) into a Turnigy 9x transmitter running er9x firmware. Details you can find on my blog on rcgroups (http://www.rcgroups.com/forums/member.php?u=406549)

    The problem is this: I’m using a 2x 3,7V trustfie 2400mAh battery pack to power the transmitter which gives voltage of max 8/min5,6V and an operating voltage of around 7V. The module takes 3,3V as input and draws 200mA according to the datasheet.
    Initially I used a 3,3V AZ1117 sot223 LDO Vreg to bring the voltage down but that generates around 900mW of heat.
    For the time being I installed a 3A 5V out hobbywing UBEC to supply the littel Vreg with 5V so as the decrease the voltagedrop and thereby decreasing the amount of heat it needs to get rid of. The noise thing troubles me though.

    I would like to put a NEC D882P LDO transistor instead of the UBEC to drop the voltage to 5V before it arrives at the Vreg. But how do I do it and what capacitors/resistors do I need?

    Very sorry for the long e-mail.

    Again thank you for your great blog and beautiful build logs and gorgeous FPV video’s!

    Cheers,

    Michiel Beets
    Netherlands

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