Developer

ArduCopter-3.0.1 released!

ArduCopter 3.0.1 has been released and is now available in the Mission Planner, firmware.diydrones.com, GitHub and the new Downloads Area.

Warning #1: Compass calibration and reducing interference is far more important than with 2.9.1b

Warning #2: GPS glitches can cause sudden and aggressive position changes while in loiter mode.  You may wish to reduce the Loiter PID P to 0.5 (from 1.0) to reduce aggressiveness (see image below of where this gain can be found in mission planner).

Warning #3: optical flow is not supported but will be back in the next release (AC-3.0.2 or AC-3.1.0).

Warning #4: loiter turns does not maintain altitude.  This bug will be fixed in AC-3.0.2.

Warning #5: This release has only been lightly tested on Traditional Helicopters.

Improvements over 2.9.1b include:

  • Inertial Navigation for Loiter and Auto meaning much more accurate control (Randy,Leonard,JonathanC)
  • 3D navigation controller follows straight lines in all dimensions between waypoints (Leonard,Randy)

         WPNAV_SPEED, WPNAV_SPEED_UP, WPNAV_SPEED_DN, WPNAV_ACCEL allows configuring speeds and acceleration during missions

  • "compassmot" to compensate for interference on compass from the pdb, motors, ESCs and battery.  (Randy,JonathanC) (Set-up video here)
  • Safety improvements:
    • simple Tin Can shaped Geo Fence
    • pre-arm checks to ensure all calibration has been performed before arming (can be disabled by setting ARMING_CHECK to zero).  (video description here)
    • GPS failsafe - switches to LAND if GPS is lost for 5 seconds
    • stability patch improvements to stop rapid climbs in very overpowered or overtuned copters
  • Circle mode improvements including "panorama" when CIRCLE_RADIUS set to zero (Randy,Leonard)
  • SONAR_GAIN parameter added to allow better tuning of sonar surface tracking
  • CH8 auxiliary switch (same features as CH7)
  • works on PX4 (some minor features still not available) (Tridge,PatH)

How to upgrade:

1. Make sure you are using Mission Planner 1.2.59 or newer (get it here)

2. Click on the MissionPlanner's Hardware, Install Firmware screen.  The version numbers should appear as "ArduCopter-3.0.1", then click the appropriate frame icon and it should upgrade as per usual.

3. Reduce the Loiter and Alt Hold PIDs if you have modified them from the defaults.  The modified PID values for the 3DR frame can be seen in the image below.

Note: Nav parameters have been combined with Loiter so do not be concerned if you can't find them.

3691038784?profile=original

4. Although not directly related to this release, if you purchased an APM prior to March of 2013, update your PPM encoder to the latest firmware (instructions here).

5. Try out the new version in stabilize mode first, then alt-hold, then loiter and finally RTL and Auto.

Numerous How-To videos are available:

Special Thanks to MarcoDaveC and the large number of testers on the pre-release thread who put their copters at risk during the extended testing period.  Some of their videos can be found hereherehereherehere and here.  Thanks also to MichaelO for the MP changes required for this release.

All feedback welcome.  Please put your questions, comments (good and bad!) below.

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Replies

  • could you guys look at my log in this thread and let me know if anything major stands out .

    I have had the same quad drop at the same point during the auto-tune routine 2 days in a row and the pile of destroyed motors and carbon fibre is growing. Right after the roll portion is done and the pitch test begins it like a switch is flipped and the quad just falls to the ground.

    Randy may have pinpointed the problem with a bad file but at $200-300 a crash of a once rock solid 800mm quad I would like to know if anything in my logs leap out as a problem. Thanks

     

     http://diydrones.com/forum/topics/need-help-figuring-out-why-qaud-f...

  • hye!could anyone help me how to make the hex reroute again after it receive new GPS coordinate during it is flying following the predetermine coordinates.example is, let say you been given 5 gps coordinate, 1, 2 ,3, 4, 5.when the hex fly when it reach point 2, then you enter new coordinate point let say between point 3 and 4.let say we name the point as 3.5.after the point 3,5, i want it back to point 4 and continue to point 5.i hope all of you understand.could you help me what should i do?do i need to add something at the arducopter sourcecode?thank you!  

  • AutoTune:

    Can someone tell me if the Autotune need to be completed and the CH7 switch toggled back and forth to save the new tuning parameters. The autotune as I see might take > 9 minutes in windy conditions and under load, battery finishes.

    Any idea to work around this issue?

  • Hi guys, here is ROI function (region of interest) demonstrated.

    See how camera stays oriented to the same area while copters circles around :

    One ideea- yaw movement should be smoothed when seting ROI for the first time.

     

     

    One note: Arducopter V3.1 RC4 fails Do_Jump command so i have to restart mission from RC switch.

  • @Randy

    Will the servo gimbal option still work on the next release? or is it getting removed?

  • I'm going to take a shot at updating the firmware. I can remove the APM case without dissembling my Quad or removing all of the motor/RX connections. Is it okay to leave everything connected to the APM while I do the update or does the APM need to be 'stripped down"?  I'll remove the props for safety.

  • I am sure this has been covered but this thread and the one at rcgroups have both become to deep to wade thru.

     

    When in auto tune how do slight adjustments to position via roll and pitch input effect the time needed and outcome of auto tune?  Two quads I have run it on go thru the process in under 5 minutes, I have another extremly light quad and running auto tune I cant find a feild large enough to run it in and not have it drift away

    . Always windy here in Florida on the coast. I ran the autotune yesterday on the light quad and with corrections for drift it took almost 9 minutes to run thru the roll portion of the test and only made it thru when I let drift for a few hundred yards, I made it about 30 seconds into the pitch portion before batt died and quad fell to its death.

     

    Does the procedure start  at the begining everytime a manual correction is made?

  • Question for anyone with regards to ACRO...  Are ACRO_BAL_PITCH and ACRO_BAL_ROLL ignored when ACRO_TRAINER is set to 0?  Or if you want true rate-control do youneed to set both of those to 0 as well?  

    The wiki is not current on these parameters as it still references AXIS_ENABLE which I believe has been deprecated..

  • Sorry if this has been asked and answered, but I'm unable to find...

    I've got a copter that in Stabilize requires one throttle setting to hover, but in Acro requires just a tiny bit more.  Is there a setting I can tweak to be able to maintain the same PWM-output to "Throttle" between the two modes, or is this a deeper tuning issue between Stab and Acro?

    My THR_MID is set to 444 and my TRIM_THROTTLE is 531.  I thought about getting these two values closer together but I know my copter hovers just under half (which is why I set THR_MID to 444, per watching the Tuning window in MP) and I thought we weren't supposed to alter TRIM_THROTTLE as this is calculated live.  Maybe I just suck it up and adjust THR_MID to match?  

    Anyways, appreciate any input!  Throttle params in the attached jpg..3692861382?profile=original

  • Josh there is no MAX_ANGLE but ANGLE_MAX exists and i already changed it from 4500 to 3000 :)  

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