Replies

  • Your question can be interrupted in many ways (its not clear) however here is what I understood :). 

    Answer1: if you move nose-up/down of the ardupilot, you will experience change in Acc-x (that means pitch fluctuation can be visible on the x-axis)....... similarly the y-axis will show fluctuation in roll. (please note that x-axis is facing forward, y-axis to the right and z-axis down .......... and from acceleration point of view....... if gravity vector is compensated..... acc_x provides fwd/back motion..... acc_y provides sideway motion.....acc_z provides up/down motion info)

    Answer2: Please note that gyro provides relative angular rate (so roll is gyro_x, pitch is gyro_y and yaw is gyro_z),

    "Extra info": To calculate the absolute roll-pitch from accelerometer, here is the simple math:

       pitch_fromacc = -1*atan2(accl_x,sqrt(accl_y*accl_y +  accl_z* accl_z));

       roll_fromacc = atan2(accl_y,sqrt(accl_x*accl_x +  accl_z* accl_z));

    for absolute yaw, one need magnetormeter as accelerometer has got gravity

    I would recommend to do imu calibration again from the GCS (seems calibration error as well)

  • My understand is that Y is acceleration fore/aft.  X is side/side, and Z is up/down.

    Accel is not angular, and therefore is not pitch , or roll, or yaw.  

    Now, the Gyros... I believe Y is roll, X is pitch, and Z is yaw.

  • Looking at some code is it possible that accel X is both pitch and roll, accel Y is yaw and Z is altitude? 

This reply was deleted.

Activity

DIY Robocars via Twitter
RT @Heavy02011: #VirtualRaceLeague: @DIYRobocars Race #14 - #ParkingLotNerds join us January 15th for #AutonomousRacing #RoboRace ⁦@DAVGtec…
yesterday
DIY Robocars via Twitter
RT @chr1sa: And after that came our races, 50 in all. This battle between these two Russians was the best we've ever seen -- incredible fig…
yesterday
DIY Robocars via Twitter
RT @chr1sa: Before our @DIYRobocars virtual race this weekend, we had a presentation from the team that won the Indy Autonomous Challenge i…
yesterday
DIY Drones via Twitter
Dec 12, 2021
DIY Robocars via Twitter
Dec 12, 2021
DIY Robocars via Twitter
RT @chr1sa: Just a week to go before our next @DIYRobocars race at @circuitlaunch, complete with famous Brazilian BBQ. It's free, fun for k…
Dec 4, 2021
DIY Robocars via Twitter
How to use the new @donkey_car graphical UI to edit driving data for better training https://www.youtube.com/watch?v=J5-zHNeNebQ
Nov 28, 2021
DIY Robocars via Twitter
RT @SmallpixelCar: Wrote a program to find the light positions at @circuitlaunch. Here is the hypothesis of the light locations updating ba…
Nov 26, 2021
DIY Robocars via Twitter
RT @SmallpixelCar: Broke my @HokuyoUsa Lidar today. Luckily the non-cone localization, based on @a1k0n LightSLAM idea, works. It will help…
Nov 25, 2021
DIY Robocars via Twitter
@gclue_akira CC @NVIDIAEmbedded
Nov 23, 2021
DIY Robocars via Twitter
RT @luxonis: OAK-D PoE Autonomous Vehicle (Courtesy of zonyl in our Discord: https://discord.gg/EPsZHkg9Nx) https://t.co/PNDewvJdrb
Nov 23, 2021
DIY Robocars via Twitter
RT @f1tenth: It is getting dark and rainy on the F1TENTH racetrack in the @LGSVLSimulator. Testing out the new flood lights for the racetra…
Nov 23, 2021
DIY Robocars via Twitter
RT @JoeSpeeds: Live Now! Alex of @IndyAChallenge winning @TU_Muenchen team talking about their racing strategy and open source @OpenRobotic…
Nov 20, 2021
DIY Robocars via Twitter
RT @DAVGtech: Live NOW! Alexander Wischnewski of Indy Autonomous Challenge winning TUM team talking racing @diyrobocars @Heavy02011 @Ottawa…
Nov 20, 2021
DIY Robocars via Twitter
Incredible training performance with Donkeycar https://www.youtube.com/watch?v=9yy7ASttw04
Nov 9, 2021
DIY Robocars via Twitter
RT @JoeSpeeds: Sat Nov 6 Virtual DonkeyCar (and other cars, too) Race. So bring any car? @diyrobocars @IndyAChallenge https://t.co/nZQTff5…
Oct 31, 2021
More…