Octo rolls to port on takeoff.

I have built an octo which rolls to port on takeoff. I have checked the forums and can confirm;

1) ESCs calibrated.

2) ESC wiring checked ( Motor test)

3) All props have been checked for left/right hand

4) Have calibrated accelerometer 3 times.

5) Roll says 0.21 when sitting level

6) Have swapped motors from left to right

When I hold it and throttle up and let it lift off the ground it fights until it is sitting at an angle and then is happy. Of course it would fly off to the left if I wasn't holding it, but very little force is required to stabilise it. If I try and level it in the air, it fights.

log attached.

I only have an old 3S battery which is why the voltage drops so quickly under test.

Any help appreciated.

2015-03-19 21-18-35.tlog

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

Join diydrones

Email me when people reply –

Replies

  • Hi,

    Dataflash logs are much more useful for analysis of this kind of issue

    • Sorry. I've been travelling. Attached.

      8.BIN

      • OK,

        Have you done a rc cal? your des roll is commanding the roll. looking at your rc1 trim its not at 1500 ish as per your channel 1 in your log (asn as it shoud be for centre stick), its at trim is 1611 instead.

        Try re running RC cal

        Stu

        • Stu, thanks so much. That's brilliant. Thinking of it, I spent ages doing the accel cal and the compass cal, but may have completely forgotten about the RC cal. I'll try tonight.I really do need to make myself a setup checklist. You tend to focus on the stuff you have had problems with previously.

          Joe

          • Fixed.

            Thanks.

This reply was deleted.

Activity

DIY Robocars via Twitter
RT @chr1sa: Our next @DIYRobocars virtual AI car race is next Saturday. Compete from home using the @donkey_car simulator -- no physical ca…
13 hours ago
DIY Robocars via Twitter
RT @RoboticMasters: Students from @Sydney_Uni working hard on improvements and changes to @donkey_car simulator. @diyrobocars @adafruit…
13 hours ago
DIY Robocars via Twitter
Practice virtual race this Saturday; the real thing will be on Oct 3 https://www.meetup.com/DIYRobocars/
Wednesday
DIY Robocars via Twitter
Wednesday
Derrick Davies liked lisa TDrones's profile
Wednesday
DIY Robocars via Twitter
Sep 21
DIY Robocars via Twitter
RT @SahikaGenc: AWS DeepRacer & Hot Wheels Track https://youtu.be/4H0Ei07RdR4 via @YouTube
Sep 14
DIY Robocars via Twitter
Sep 8
DIY Robocars via Twitter
RT @davsca1: We are releasing the code of our Fisher Information Field, the first dedicated map for perception-aware planning that is >10x…
Sep 8
DIY Robocars via Twitter
RT @SmallpixelCar: How this works: 1)object detection to find cones in single camera image, 30 frames/sec on @NVIDIAEmbedded Xavier. 2)comp…
Sep 8
DIY Robocars via Twitter
RT @SmallpixelCar: Use two color cones to guide the robocar. No map needed, on onsite training needed. Just place the cones and it will fol…
Sep 7
DIY Robocars via Twitter
Sep 7
DIY Robocars via Twitter
RT @roboton_io: Great to see http://roboton.io running at 60fps on the cheapest #chromebook we could find! #edtech #robotics #educat…
Sep 3
DIY Robocars via Twitter
RT @openmvcam: Crazy in-depth article about using the OpenMV Cam for Astrophotography: https://github.com/frank26080115/OpemMV-Astrophotography-Gear https://t.co/BPoK9QDEwS
Sep 3
DIY Robocars via Twitter
RT @openmvcam: Hi folks, it's finally here! Our first draft of our Arduino Interface Library is out! It works over SoftwareSerial, Hardware…
Sep 3
DIY Robocars via Twitter
RT @chr1sa: Please let them have an open API. This would be perfect for @DIYRobocars races https://twitter.com/NintendoAmerica/status/1301513099707658246
Sep 3
More…