AltHold Baro problems

So, I have to assume there's some code that takes this into account, but I have a problem with the Barometer. I have an SK450 with an APM 2.5+ with 3.0.1. When I'm in alt hold and the copter is not moving, I have no problem with holding altitude, but the instant I move side to side, the indicated altitude increases on the telemetry, while the actual copter drops in altitude. This happens in Loiter and AUTO as well.

I will try to find some logs for this, but I'm not sure they will help, due to the nature of the problem. I'm pretty sure this is due to the fact that if you move into the moving airflow from the motors, the pressure changes slightly, and the autopilot compensates by decreasing altitude. This continuously pushes the barometer into the moving airflow, continuing the problems. Any ideas for what I should do?

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

Join diydrones

Email me when people reply –

Replies

  • Make sure your barometer is protected from wind and sunlight.  Normally, this is done by having a piece of foam or cotton over the barometer itself and some black tape or other light-blocker over the area containng the barometer.  I normally enclose the whole APM inside another container with only a few small holes for wiring as well. Performance is better if this is opaque black but then you can't see the LEDs on the APM.

This reply was deleted.

Activity

DIY Robocars via Twitter
yesterday
DIY Robocars via Twitter
RT @_JonMyer: 🚨Attention DeepRacer's including #UndergroundDeepRacer🚨 Check our our LIVE stream that including @IAM_dbro Take a few moments…
Aug 5
DIY Drones via Twitter
RT @MarvelmindMaxim: Extreme precision for 60 swarming robots. #marvelmind #autonomousrobotics #robotics #swarmrobotics #rtls #ips #indoor…
Aug 3
DIY Drones via Twitter
RT @MarvelmindMaxim: Precise (±2cm) tracking for racing boats and autonomous boats. Works outdoor and indoor. #autonomous #AutonomousVehic…
Aug 3
DIY Drones via Twitter
RT @MarvelmindMaxim: Helping PixHawk folks to fly autonomous quadcopters using PX4 and ArduPilot. https://marvelmind.com/drones/ Equally suitab…
Aug 3
DIY Robocars via Twitter
RT @chr1sa: The @DIYRobocars @donkey_car virtual AI car race is starting in 15 minutes! Watch it live on Twitch https://www.twitch.tv/mossmann3333 htt…
Aug 1
DIY Robocars via Twitter
RT @chr1sa: Don't miss our monthly @DIYRobocars @donkey_car virtual AI car race tomorrow at 10:00am PT live on Twitch. Head-to-head racing…
Jul 31
DIY Robocars via Twitter
RT @sparkfun: Our completed tutorial on building an @NVIDIA Jetson Nano-powered @Sphero RVR gets your bot up and running via teleoperation…
Jul 30
DIY Robocars via Twitter
RT @SmallpixelCar: Freeway test https://t.co/4V5tV9lhIP
Jul 29
DIY Robocars via Twitter
Very small autonomous cars racing, thanks to an overhead camera: https://control.ee.ethz.ch/research/team-projects/autonomous-rc-car-racing.html
Jul 29
DIY Robocars via Twitter
Jul 29
DIY Robocars via Twitter
Jul 29
DIY Robocars via Twitter
RT @chr1sa: Don't miss our virtual AI car race this Saturday! Real developers + virtual cars =🏎️🏎️🏎️ Head-to-head battles with thrills, sp…
Jul 28
DIY Robocars via Twitter
Jul 27
DIY Robocars via Twitter
RT @usashirou1: Jetson nano by Isaac Kaya #jetson https://t.co/Mu1N0CyQkN
Jul 23
DIY Robocars via Twitter
RT @GPUsolution: JetRacer mady by Iflytek company #JetsonNANO #Nvidia https://t.co/MimTymIwge
Jul 23
More…