I have one of the so called popular F450 frames. Not the original dji one, but chinese part. Now, I have assembled motors and ESCs. The assembling process was harder than it should be, probably because of not being original product. Anyway, I achieved to match holes with each other and installed the top plate. However, there is a problem. To cross legs(front left and rear right) cannot touch to the ground at the same time, i.e, one of the legs stay in the above the ground, approximately 2 cm. Is this something I should worry about? Can a neat flight be achieved with this problem existing?

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    $\begingroup$ Hi! Please attach a picture of what you're talking about, it's hard to understand what's going on. $\endgroup$ – ifconfig Jul 19 '20 at 20:14
  • $\begingroup$ @ifconfig i would like to, but, it is very hard to take a nice photo, because it is not easily visible. Let me express myself in a little bit shorter way. I assembled the frame, when I put it on a perfectly level ground, 3 of the legs are in contact with the ground but the fourth one is not touching to the ground, instead, hovering 1-2 cm above. $\endgroup$ – muyustan Jul 19 '20 at 21:25
  • $\begingroup$ Right, but it's nearly impossible for us to understand what's happening without seeing it. $\endgroup$ – ifconfig Jul 19 '20 at 21:28
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    $\begingroup$ @ifconfig ok, just like restarting the computer can be a solution to many problems, I reassembled it and now it is fine. Thanks for your interest, you can delete the question when you see this comment. $\endgroup$ – muyustan Jul 19 '20 at 21:48

Do not worry, I also have an F450 frame(not original) and one or 2 of the legs stick up slightly. I have had a perfect flying experience even if I was using an Arduino as a Flight Controller. Your FC(Flight Controller) should smoothe it out. But, if it sticks up more than like 5cm, then you might have a slight concern.

  • $\begingroup$ I will be using my own flight controller, so things might go even worse than "arduino as fc" :D $\endgroup$ – muyustan Aug 14 '20 at 13:21
  • $\begingroup$ Can you tell me more about your own flight controller? Like are you going to use an atmega chip or an stm32? $\endgroup$ – DragonflyRobotics Aug 14 '20 at 13:45
  • $\begingroup$ If you are using something in the Arduino family, you should check out Joop Broking's work. His work helped me fly my drone. And he in fact used a "Blue Pill" too. $\endgroup$ – DragonflyRobotics Aug 14 '20 at 13:46
  • $\begingroup$ But as per your question, it should be fine as long as you do your PID tuning correctly. If this is what you want please accept it as an answer! $\endgroup$ – DragonflyRobotics Aug 14 '20 at 13:50
  • $\begingroup$ I will be using blue pill, I am aware of Jopp Brokking, thanks for the advice. Different from his work, I will try not to use blue pill with arduino compatibility but as it is own register accesses, also no HAL or SPL. Gy-86 breakout board will serve as IMU. I also will not use commercial RC transmitters, instead 2x nRF24L01+ LNA/PA is what I will be using on both sides. Transmitter will also be based on bluepill. $\endgroup$ – muyustan Aug 14 '20 at 13:53

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