Comments

• 3D Robotics

  Chris Anderson July 25, 2012 at 9:11pm

  Randy: On APM 2, you can't connect wireless telemetry and USB at the same time. They share the same port. The manual tries to make this superclear, but if there's more we can do pls tell me.
• Developer

  Randy July 25, 2012 at 8:53pm

  @Luc re problems with the new 3DR radio,

  One thing a japan user found recently was that if the miniUSB is connected, nothing will come out on the telemetry port. Maybe try disconnecting your miniUSB and see if it starts to work?
• 

  Jon C July 25, 2012 at 3:03pm

  I had a similar problem with my 3DR and it turned out to be the version of MAVLink the Mission Planner was using.  The installer installs 2 versions of the planner.  One using MAVLink 0.9 and one using 1.0.  It runs 0.9 by default but there is a second launcher in the installation directory for 1.0. You need to choose the version that matches what your APM is using.

  Can you connect successfully via USB?
• 

  malcolm churn July 21, 2012 at 4:19am

  Hi Dean hopefully tomorrow, just picked up shiny new GPS, care of Martin, very happy!! I think Martin is going to try and make it down to my club field. Give him a shout. I'll guest him, I can get one of the other guys to guest you if your up for it.
• Moderator

  Dean Wynton July 21, 2012 at 2:12am

  Hey Malcolm, when and where you flying? PM me if you prefer?
• Distributor

  UnmannedTechShop.co.uk July 20, 2012 at 9:54am

  Hope we get some decent weather to be able to fly this weekend!
• 

  malcolm churn July 20, 2012 at 2:56am

  flying this weekend if anyone is up for it :)
• 

  malcolm churn July 18, 2012 at 2:03am

  I always do an auto trim on CH7 every time i fly, the problem is it dosent hold it everytime. when it does hold the trim it Loiters pretty well. Just need to find out why, i think its a vibration.
• Developer

  Randy July 17, 2012 at 2:23am

  @Luc re auto PID tuning...Adam's part of the dev team now..and we talked about what he was working on...i think it turned out that it only worked in a very limited number of situation.  It really would be great to hear/understand the theory behind how this could be done.

  My guess is that if you have a decent guess as to the delay between when the controller sends the message and when you see the result, you can kind of work up over time an idea as to whether it's reacting as your PID values tell you it should...and then adjust them slightly up or down..

  ..so you have some kind of little watcher sitting there..and over a long time it keeps quietly adjusting the pids behidn the scenes..it does it a lot at the beginning when it's very unsure if it's got them right..but then slows down over time as more history builds up...
• Moderator

  Dean Wynton July 17, 2012 at 12:11am

  Malcolm I am sure you already know this? But can't you just do an auto trim in flight? Its got to be a whole lit easier than taking everything to bits? I can meet up if you wish.. I think you are 20 mins away..