Build a DJI f450 or why I did not buy a Phantom 3

    A bit of history. I've been flying an f450 quadcopter for about 3 years. For all this time 3 sets of engines, 2 sets of regulators and propellers have changed on it: from cheap turnigy to t-motor. But in the end, after the release of the DJI E300 kit, I settled on them. I ordered this set * with the frame from ebay.



    1) Immediately ready (almost) quadrocopter at a reasonable price. What is good about the E300? Well, firstly, this is how a quadric behaves in the wind. One of my “fears” all the time was flying in the wind. Custom quadrics swayed like that, and it was really scary that he would roll over now. But this is not the case with this quadric. I guarantee that the phantom will already be carried away into the tree, while this one will still hang in place. The regulators from this kit work out 100%. Therefore, the quadric hangs rooted to the spot and does not swing.

    2) In addition, the E300 comes with self-locking propellers. This really really speeds up the process from "Well ... come ... we need to get laid out" to "fly!". If you choose between the old set of “red engines” from DJI, which are “cheaper” and the E300, then definitely take the second one! .. No gadgets, keys, etc.



    3) Well, and the last - the engines practically do not get warm even in the heat. The previous kit from the T-motor, which stood before the E300, was heated at 20C so that I thought maybe a little more and there would be a wedge of the engine. So this is also a very important parameter.

    Frame f450
    Yes, now everyone is switching to phantoms. Especially with the advent of the 3rd version. But believe me, a phantom is a monocoque. One normal crash - and a frame for a replacement (not to mention the stuffing). Here the situation is different - a pair of beams (non-original) on the f450 frame are worth 200 rubles. 200 rubles!!! This frame flew to me as it should, and apart from the rays, nothing ever broke (I mean the central boards). Of course, all the electronics are visible and not very “aesthetically pleasing”. But it seems to me better to fly “not aesthetically” than to wait for a parcel from China. :)



    Options for my quadric
    Also on the quadric is a 3-axis suspension * under GoPro on the storm32 controller. This is a very good suspension. It works fine. And if you plugged in the battery and nothing happened - don't panic, it's just 30 seconds. starts up. :) Having suspensions on alexmos, I did not understand this at first. why doesn’t it work? .. And he began to calibrate, etc. It turned out that you just need to wait.

    The only negative is the hollow shafts of the engines. I don’t know why, but sometimes it happens that they pop up a little and the rotor of the engine bends, as a result does not spin. You have to insert the shaft back (for yaw and roll axes). Not critical, but sometimes enrages. But for such a price it’s normal. Aomway 1000mw 5.8Ghz * video transmitter is

    also installed - a good transmitter, high quality. Has a built-in cooler.



    Monitor skyzone sk-702 * is a good monitor. No wires. Everything is built in. Even a 2s battery is inserted inside. Built-in 32 channel receiver with automatic frequency search. In addition, folding curtains. A very useful thing. I didn’t look at it and accidentally took it without a DVR recorder. It's a shame. There is a slot for a USB flash drive, but there is no inside the recorder. Therefore, if you take it, pay attention (apparently that's why it was cheaper). :)



    OSD. Long thought how to put osd on a quadric. It was possible to flash Nazu to version 2 and put the original osd from DJI. But this is 3 t. on osd, + PMU. I decided to make it cheaper and buy osd N2 * . There are 3 versions from N1 to N3. N3 kind of like a phantom. I took N2 because it has a “horizon line”, but you can take N1 cheaper. The parameters in them are the same.



    The only negative is the Chinese language, but in reality it is nonsense. All parameters are clear and readable. Great cheap option overall.



    That seems to be the whole filling of the quadric.

    Using the head-tracker, I tied the gimbal control to the “head” and duplicated the control on the remote control ( quanum headtracker . I use it with turnigy 9xr). It turns out almost complete immersion in flight. It remains to buy 3d glasses and it will be excellent.



    Conclusion:
    Despite the great popularity of phantoms, I believe that this DJI product is still made "for the people." Its main advantage is modularity. Any node changes without problems and costs a penny (relatively). Therefore, choosing between phantom and f450, I will choose f450 *. Now copter manufacturers have become like car manufacturers - the maximum of incomprehensible electronics and everything is done so that it was almost impossible to fix the copter, and 3 phantoms is an example. And on the condition that any copter falls and you are not a millionaire, it is worth considering what is better: to be able to sit in the evening with a soldering iron or go into a binge? :) This completes the test of my quadric. Thanks for attention. :)

    How the quadric behaves in flight you will see in the video:


    Additional photos





    ps Thanks to Victor for this material and experience.

    That's all, with you there was a simple service for choosing complex Dronk.Ru equipment .
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    See also:
    Tenacious Chinese smartphones. Part 1
    Enduring Chinese smartphones. Part 2
    5 home projectors
    Chinese tablets with Dual OS, for those who can not make a choice
    10 Gearbest geek gadgets at a discount for the venue’s birthday
    Chuwi history - from MP3 players in 2004 to Windows 10 tablets in 2016
    Compare the prices of gadgets offered by GearBest for your birthday?


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