White Ox
lvl.4
Flight distance : 98281 ft
United States
Offline
|
Ok...interesting discovery for me....
with 4.3.4, I was having the horrible connect /disconnect loop - over n over. I thought it was app related... Now, I'm not sure.
I rolled back to 4.2.21 and buzz-bombed around for a while playing with some GPU overclocking and i/o scheduler and fsync enabled/disabled settings trying to find if anything made it better.. Not knowing if I was getting "as good as it will ever be", I decided drop to 4.1.15, as I know via forum posts that others were having good success with the Nexus 7 2013 on it and I'll bet all but a couple were running pretty close to stock.
Upon rolling back, and changing the above settings back to stock, I started having connect / disconnect issues all over again and nothing I changed back to "non-stock", made a bit of difference. I remembered reading another forum post a few days ago about a different app version that someone had connect/disconnect issues with - so they went back to 4.1.15 as well.. and still had the issues. Turned out, they were @ or just under 50% on their remote power, and once fully charged, things went away.
Not wanting to wait for a charge / climate changes, I got out an OTG / External power adapter I have from another project (this lets me charge both the remote, and the tablet, simultaneously while keeping the data communication open between remote and tablet). VIOLA.. Instant gratification. Not a single disconnect. I continued with this setup as I worked my way back into the i/o revisions above all over again to make the camera view refresh even faster.
Another lesson learned is that with all the fly aways / lost bird stories I've read, I keep mine on a pretty short leash. Lots of back and forth side to side / circle patterns. To do it correctly, one needs to always have the backs of the antenna's aimed at the bird - this in fact keeps there from being any pixelation on my setup. If I don't face the bird or tilt the remote up when it's close in overhead, the refresh rate on the camera view begins to deteriorate.
Third and final lesson was startup sequence for the first flight / each battery change. Upon the remote connecting to the bird and going into the camera view the first time, I can swing the gimbal down/back up without ever taking off and tell if the view is going to be laggy or not - most of the time, it will be on this first connection. All I have to do it hit the little "DJI" emblem at the top left of the screen to exit the camera view, wait a couple seconds and then click "Go FLY" and once in the camera view again, a gimbal swing verifies no lag. It's almost as if exiting out of the viewer and coming back in cleans up some remaining garbage using up valuable resources.
Currently, on this 5yr old tablet, I've got things working so well that I can hover over the grass and watch the leaves flickering in the prop-wash. or cop a squat in front of the flag hanging off my front porch and watch it gently sway in the breeze.... all while saving the video to cache on my tablet.
Next step is to charge things up, and move up to 4.2.21 and apply what I've learned above - having the OTG Re-supported version would be nice. If all goes well, I'll bump up another few revisions and try it all again till I find the limit of my newly overclocked 5yr old tablet. lol |
|