Alt Hold working, Stabilize, not so much

Hi there

After a few years of flying mapping missions with a fixed wing, using APM and Pixhawk, I got the opportunity to get airborne a 700 sized quad that was given to me (but not flyable as is).  I've flown my son's Hubsan X4 a fair bit, but I know this is biting off a big chunk, so I'm working slowly, and things are coming together.

I've encountered a strange scenario, though, now that things are all together.  When the bird's in Stabilize mode, it's really a rocky, tippy  mess upon takeoff.  It's to the point that I scale back the throttle because it's flipped itself a few times

The strange part comes when I tried to put it in Alt Hold and fly.  It lifted right off, and held Altitude pretty well. 

AC3.3 on Pixhawk

Tarot 700mm (or so)

HlY 4240 650kV

30A HK Blue ESC

11x5 props

All props and motors are in the correct direction (didn't come to me that way :(  ), ESCs calibrated (all at once).

I'm wondering if part of the issue is I'm too shy on the throttle stick on Stab takeoff...in AltHold it powers up pretty fast once I pass the deadzone, so maybe I just need to get over my tentativeness?  It could be the prop wash that is destabilizing things.

Any thoughts?

AlthHold.BIN

2016-01-07 08-25-48_STAB.tlog

2015-11-25 07.04.19.jpg

You need to be a member of diydrones to add comments!

Join diydrones

Email me when people reply –

Replies

  • Update...multiple ESC calibrations, rolled back to AC3.2.1, got less shy about punching the throttle in STAB for liftoff, and....flight!  Lots to do yet, but progress feels good...

This reply was deleted.

Activity

DIY Robocars via Twitter
RT @TinkerGen_: "The Tinkergen MARK ($199) is my new favorite starter robocar. It’s got everything — computer vision, deep learning, sensor…
Monday
DIY Robocars via Twitter
Monday
DIY Robocars via Twitter
RT @roboton_io: Join our FREE Sumo Competition 🤖🏆 👉 https://roboton.io/ranking/vsc2020 #sumo #robot #edtech #competition #games4ed https://t.co/WOx…
Nov 16
DIY Drones via Twitter
First impressions of Tinkergen MARK robocar https://ift.tt/36IeZHc
Nov 16
DIY Robocars via Twitter
Our review of the @TinkerGen_ MARK robocar, which is the best on the market right now https://diyrobocars.com/2020/11/15/first-impressions-of-tinkergen-mark-robocar/ https://t.co/ENIlU5SfZ2
Nov 15
DIY Robocars via Twitter
RT @Ingmar_Stapel: I have now explained the OpenBot project in great detail on my blog with 12 articles step by step. I hope you enjoy read…
Nov 15
DIY Robocars via Twitter
RT @DAVGtech: This is a must attend. Click the link, follow link to read the story, sign up. #chaos2020 #digitalconnection #digitalworld ht…
Nov 15
DIY Robocars via Twitter
RT @a1k0n: Got a new chassis for outdoor races (hobbyking Quantum Vandal) but I totally didn't expect that it might cause problems for my g…
Nov 11
DIY Drones via Twitter
First impressions of the Intel OpenBot https://ift.tt/36qkVV4
Nov 10
DIY Robocars via Twitter
Nov 9
DIY Robocars via Twitter
Excellent use of cardboard instead of 3D printing! https://twitter.com/Ingmar_Stapel/status/1324960595318333441
Nov 7
DIY Robocars via Twitter
RT @chr1sa: We've got a record 50 teams competing in this month's @DIYRobocars @donkey_car virtual AI car race. Starting today at 10:00am…
Nov 7
DIY Robocars via Twitter
Nov 6
DIY Robocars via Twitter
RT @a1k0n: Car's view, using a fisheye camera. The ceiling light tracking algorithm gave me some ideas to improve ConeSLAM, and having grou…
Nov 5
DIY Robocars via Twitter
RT @a1k0n: To get ground truth I measured the rug, found the pixel coordinates of its corners, calibrated my phone camera with my standard…
Nov 5
DIY Robocars via Twitter
RT @a1k0n: @DIYRobocars is back in December, but outside. Time to reinvestigate ConeSLAM! I rigged up a quick and dirty ground-truth captur…
Nov 5
More…