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  1. econfly

    Sony a7R II

    Mine arrived today. This is one amazing little machine. I don't have any Sony E-mount glass at this point (a Zeiss Loxia 35mm f/2 is inbound), so all of my playing around today has been with Canon lenses and a Metabones EF-E converter (Mark IV with the latest firmware). This may not be the...
  2. econfly

    KDE vs T-Motor -- Picking a Motor Based on Spec Sheets

    I am in the early stages of building a copter to lift my MōVI M5. With solid knowledge of the weight of the M5 and cameras I plan to fly, as well as a general idea of all-up weight, I have started to look at motors. This is a description of that process and what I have concluded so far. This...
  3. econfly

    Defy G2X

    Does anyone have experience with this gimbal yet? I'm looking for a nice gimbal option for the new Blackmagic Micro that could also fly something up to the size of a GH4. The Defy G2X seems to be a solid option, but I have no experience with their products.
  4. econfly

    Phantom 3

    This should be interesting. The base model at $999 is offering copter, radio, HD video downlink, 3-axis gimbal, 1080p60, polished app that looks a lot like the Inspire, etc. http://www.dji.com/product/phantom-3
  5. econfly

    Product Review ** Invertix 400 3D Multirotor

    Do you think you have multirotor flying under control? Does manual mode lack the challenge and fun -- that bit of excitement -- it once had? If so, you need one of these. The headline feature, as the name implies, is inverted flight. Upside down, sideways -- you name it, this thing can do...
  6. econfly

    Using an Arduino to Control a Servo / Throttle

    A radio and receiver are not the best tools for bench testing. You can buy stand-alone servo controllers. You can even buy a function generator (overkill for all but very demanding purposes; I use this one). But there is no need to spend the money when many already have what they need: an...
  7. econfly

    ESCs and extended power wires: Should we add capacitors?

    This question came up in an ESC product review I wrote. Say you want to extend the power wires on your ESCs, maybe to mount them out on the arms under the motors. The general advice out there is to avoid this, extend motor wires if needed, but keep ESC power wires as short as possible. If...
  8. econfly

    SOLD ***DJI A2 flight controller

    Standard A2 package, used but in excellent shape. $1,150.
  9. econfly

    Product Review ** JETI HiCopter 30A Opto ESC

    JETI HiCopter 30A Opto ESC Review PART 1: OVERVIEW In the simplest sense, what we want to know most about an ESC is whether it works. So let's deal with this most essential question first: Yes, these HiCopter ESCs work just fine. I plugged them into a test quad with a Naza v2 flight...
  10. econfly

    Flight control -- What works for you?

    I'm interested in the most reliable flight controller available. GPS is nice, but more important is ultra-reliable attitude control, and particularly on larger/heavier builds. If you were doing a new build, about 20 pounds all-up weight, what flight controller would you use? I don't care...
  11. econfly

    SOLD ***DJI Zenmuse Z15-N, NEX-5R, lens, etc.

    For sale is a DJI Zenmuse for a Sony Alpha NEX, including: Zenmuse Z-15 Gimbal Sony Alpha NEX-5R Camera Sony 20mm f/2.8 Alpha E-mount Lens 49mm UV filter 49mm ND 0.9 (8x) filter I would prefer to sell this as a set. The Zenmuse works perfectly and is balanced for the camera with ND filter...
  12. econfly

    Product Review ** DJI 1552 Folding Propeller

    DJI 1552 Folding Propeller DJI introduced the 1552 folding propeller a few months after the release of its S800 Evo multirotor, claiming, “with a new advanced airfoil design and stronger materials, it gives a 10% efficiency boost when used with an S800 EVO.” In the following months the new...
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