ImpulseRC APEX FETtec KISS

By Baloozermann on Mar 16, 2021

4  1,108  2

Sadly fly away (crash in forest) im summer 2022... :(

Apex with Fettec Stack & OSD. My first KISS build.
378 g dry
542 g AUW
(always without GoPro)

Photos

Discussion

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c0pternoob   Mar 21, 2021  

nice build, can you show your PID please? I have an apex5 too but i can't find nice PID settings.
Can u help me please?

Baloozermann   Mar 25, 2021 

Hi. I've added actual PIDs but they are not perfect. First of all, it flies all over good. Rolls and flips are very smooth, silent and precise at lower and mid speed. But, if i fly with more or full throttle with speed over an object to do an half backflip to use the momentum of the model, the rate is very low for a short moment. Normally i use around 1.000 deg/s. If i do a half flip, i reduce throttle very fast zu zero (with "airmode" settings on, of course) and at the same moment i do a fast full pitch stick input. And at this moment, the model will not move fast, let's say: with the same pitch stick input on hovering or slow flying it will do a half flip, and while the speed manouver it only turns 10 oder 20 deg instead of 180. First i thought it was weak ESC (braking power or so). But with (a bit) more throttle it spins fast. Also if i do the Pitch move first and then 0,2s later i cut the throttle. Than it also flips fast.
In general, if i abrubtly cut throttle to zero, it feels like that somewhat holds the model for a short moment, than it moved slowly a bit on all axes (too low I?). After a half second, it spins fast also.
With higher PIDs (from Mr Steele video) it's much better but not perfect.
I dont know which parameter i can optimize to solve the problem. But i have no clue about PID Tuning, especially not from KISS.
With more I than actual, it flies a bit nervous, especially it shakes a bit at fast pitch stick movements...
Later I saw this video and there are recommended PIDs for a good starting point, then match more with my that the default ;)


Mr. Steele PIDs: https://drive.google.com/file/d/1uI6q9ATGwUhlZwcAwQpCyiGAV6q398Ie/view

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