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  • in reply to: BETAFLIGHT 4.0.3 and KAKUTF4V2 #64543
    brianm
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    I finally got my Tricopter LR built last weekend. It’s basically the stuff David recommended, except HQ 8×5 bullnose props and a non-telemetry XM+ receiver I had laying around. I haven’t installed FPV gear yet. I did the maiden on Sunday with dRonin and didn’t have any major issues. Yesterday I decided to try Betaflight (before I found this thread). The first attempt ended with the machine violently flipping on takeoff because I had the motors mapped incorrectly. The second flight she flew, but poorly because my PIDs were completely wrong.

    After that I found this thread and the recommended PIDs. With those loaded I went out after work tonight and it flew pretty good. For the second flight I ended up dialing the RC down to .75 and reducing feedforward to zero on all channels. It’s not the most scientific test, but I think pitch and roll are closer to what I prefer. Yaw not so much. I have a telemetry receiver on the way so that I can mess with the PIDs without running in to the computer constantly.

    Anyway, this thread is great. I’m a fixed-wing guy who has some experience with micro-quads but has never tuned a PID before, so the information here is extremely helpful. Hopefully in the next week or so I’ll get the FPV gear installed and have time to get out of my backyard and fly somewhere with enough room to really test her out. Thanks everybody!

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