Recent content by manandufo

  1. M

    Happy Holidays/weightlifting experiment

    I got an idea to lift a LED light rope on a tree with my Phantom. However, I didn't find a way to release the rope on the fly, but the idea of lifting the lighted rope on a dark winter day sounded cool so I l did it anyway! It's 50 meters LED rope, weighing something like 1-1.5 kilos. With...
  2. M

    Watch flight on TV screen?

    It works for me with iPhone 6, but I can't guarantee it will work with all devices, because DJI GO needs a lot of processing power from the device...
  3. M

    The Official "My P4 Range Is Too Short" Thread - Don't Start New Range Threads!

    I found some new 4w wifi antenna amplifiers on market. Has anyone tried these with P4?
  4. M

    Watch flight on TV screen?

    If you have an Apple device, the easiest way is just to mirror the screen via Apple TV. Works like magic.
  5. M

    Launchpad for automatically launching Phantom?

    Perhaps some metal conductor to the drone's legs, and wiring to the battery connector? Most likely not so simple. Yep, at least with the first versions I'll keep some safety distance between the drone launchpad and any infrastructure. Some telemetry about charging, internal temperatures etc...
  6. M

    Launchpad for automatically launching Phantom?

    Excellent question, recharging would need some real engineering effort. Initially I'm not going to do it. Also, landing the drone accurately to the launchpad would be a problem. RTH is not accurate enough. With the recharging, I don't know how complicated is the logic in the charger and how...
  7. M

    Flying in really cold

    Here's some footage I shot at -10C. Phantom did very well, no problems whatsoever. Maybe it heated the battery longer than usual. :)
  8. M

    Launchpad for automatically launching Phantom?

    Has anyone made a 'launchpad' for dispatching a Phantom automatically or remotely? Sometimes it's awkward to carry the drone and the remote somewhere and fly off to take photos. Instead, I'd like to have an app in my phone, and I'd just tell it 'fly here and take photos of me' or point the...
  9. M

    Mavic vs P4 on photo quality

    Yes, it seems that Mavic would be better for that purpose. However, focal length is only one of the properties that makes difference between the cameras.
  10. M

    Mavic vs P4 on photo quality

    Yes, this way you'd have very accurate photos if you had a 50 mpix sensor. :)
  11. M

    Mavic vs P4 on photo quality

    please have look at the attachment (actually not a good example but proves the point). When creating a 2D mosaic, useful portion of the image with large FOV is low. Optimal focal length would be between 80-200 mm, see for example Aerial Photography.
  12. M

    Mavic vs P4 on photo quality

    Which FOV is better depends on purpose. With scenery photos big FOV is good, but for taking high altitude images for mapping purposes you'd like to have as small FOV as possible. A high quality zoom lens is needed, I'd be happy to pay a pile of euros to have it. :)
  13. M

    Operating P4 in Rain

    I had a similar incident with my P4 - it was stuck in a tree over a night and of course it was raining most of the night. After I got it down I disassembled the bird, dried all the circuit boards with a hair dryer, and left drying for a couple of days before assembling it back together. After...
  14. M

    The Official "My P4 Range Is Too Short" Thread - Don't Start New Range Threads!

    I didn't find information about how windsurfer works with P4, so I spent half an hour to make a DIY version to test it. I know, it's ugly. No, it's fugly. But it works!! The range almost doubled, especially when there are obstacles on line of sight. This is not a joke. :) Perhaps I'll pay more...