Comments

• 

  Flavio Taborelli November 29, 2012 at 3:08pm

  @Randy

  APM2.5 has 4 serial port

  1 for GPS 

  1 for Telemetry / USB ( muxed, master is USB )

  1 for Flash Memory 

  1 Spare if Telemetry is muxed

  Spare one is Uart2 and you have to declare it at the beginning of the code following the same syntax as the other 3. Baud rate and other parameters can be declared on config file as usual.
• Randy Brazeau November 29, 2012 at 10:32am

  My rover motor controllers use serial communication which I currently do through Arduino Mega. Does APM2.5 have an available serial port? I remember reading a post a while back...saying there are four UART on the APM which are all used and not available.
• 

  Bot Thoughts November 29, 2012 at 10:15am

  Good to hear ArduRover is getting the coding attention it deserves :)  Rovers definitely have some unique issues to deal with as some have mentioned already. Being close to the ground surrounded by obstacles is trouble for gps and compass, and requires some obstacle avoidance, ideally. Bouncing and bumping over rough terrain--how well does the AHRS algorithm perform in those scenarios?  My system handles it very poorly :) Anyway, looking forward to following updates.

  I'm tempted to play with ArduRover now as it's got some support stuff (SITL, telemetry/GCS, etc) that my code is unlikely to support anytime soon. I have a spare RC car... hmm...
• 

  Flavio Taborelli November 28, 2012 at 11:50am

  @Tridge

  For me LITE is not usefull as APM2.5 has integrated IMU.

  A couple of point that I notice on ArduRover code that may help in new version developing:

  1) Throttle control - common ESC has safe function to prevent accidental reverse, they need to pass by neutral for some mS before Forward function.

  Maybe a setup option could enable reverse for Auto and/or for Manual Mode ( for example in my Boat project reverse is handled only in Manual )

  2) Failsafe: As Rovers path may have more obstacle than Kopter or Plane a function to calculate inverse WP path for RTL should be a good idea, better if it will be selectable by a parameter.

  3) Reduce the minimum number of radio channel needed for normal control because common "wheel" radio for rovvers or boat has 2/3 or in some case 4 channel. Otherwise an hely tipe radio must be used but it is not very intuitive for manual mode.

  4) in MP 70% of the commands are for flying object, will be nice to have some extra commands for ground vehicle hiding the other one. ( for example sonar ping graphical data, etc )

  5) Add some extra parameters on mavlink without scaling function in MP for extra sensors, for example in my boat project Depth sensor data are passed as absolute pressur in MP for logging.

   

  Feel free to ask for any further information and thanks a lot for your time in this project !

   

  regards,

   

  Flavio

   

   
• 

  KM6VV November 28, 2012 at 11:30am

  Thanks for the command, I have GitBash, but I god an error that it wasn't found.

  Alan
• Admin

  Thomas J Coyle III November 28, 2012 at 11:19am

  For those of you who would like to make GitBash work try this:

  $ git clone https://code.goggle.com/p/ardupilot-mega

  Make sure that the ardupilot-mega destination file on your computer is empty if you have previously downloaded other git files or GitBash will give you an error message. Otherwise GitBash will create the ardupilot-mega file in your personal root directory.

  Regards,

  TCIII
• Admin

  Thomas J Coyle III November 28, 2012 at 11:13am

  @Anthony,

  That is because the ArduRover git is empty. Try arudpilot-mega. It will download everything in the Arduplane development git so you will have to parse out Ardurover2 and the common library folders.

  Regards,

  TCIII
• 

  KM6VV November 28, 2012 at 11:11am

  What's with these lists?  This one I can't edit 5 minutes later, and it puts the newest one on top.  I never did find one post that Thomas made.  This bugs me! Can we make them all work the same? [/rant off]

  Anyway, I was going to edit my post to add this link to a serial interface for ROS:

  ROS Serial

  Alan
• 

  KM6VV November 28, 2012 at 11:06am

  @Anthony,

  Sounds like you could use a "DIFFERENTIAL_STEERING" mode as well!  I posted a comment on another thread.  Andrew may be able to help, or I will be looking for it as well. 

  A secondary Uno could work, I've been thinking about that solution as well, and so has Thomas.  Could also generate a serial command in the Uno I suppose. 

  Alan
• 

  Anthony White November 28, 2012 at 10:33am

  GIT returns "empty repository" warning when running:

  git clone https://code.google.com/p/ardurover/