Version 2.5 of the ArduCopter code is now available in the AP Mission Planner and in the downloads area!
The default PIDs are optimized for a 3DR/Jdrones quad with 850 motors and 10" props. If you're using more powerful motors/props, start by turning down Rate Roll P in 25% steps.
While some testers have reported very good flights with the default PIDs, some have reported that this release is a little "sharper" due to the DCM improvements and have found they needed to:
reduce stabilize P by 10% (i.e. 4.5 -> 4.2)
reduce stabilize D by 30% (i.e. 0.15 -> 0.10)
increase rate D from 0 to 0.001
Tuning loiter can be tricky. Refer to the discussions which will appear below for more community feedback on what parameters work best.
Please post your feedback in this discussion. For enhancement requests and bug report, please add them to the arducopter issues list. When possible please include logs (tlog and/or dataflash) and tell us whether you're using APM1 or APM2 and what version of the software you're using (presumably 2.5 but tell us anyway!).
Thanks for this release go to the developers (both in the core team but also those who have provided bug fixes through the issues list) and also the community members who participated in the previous release thread and provided some great detailed information in the form of issue reports and logs which allowed us to nail some bugs!
Wow nice fly
Great vid! Couple of questions... would you be willing to share your final param file? I have the same stock quad and having a tough time tuning it. Lots of drift in all modes...
Also, what camera are you planning on sticking on your quad? I'm waiting for a new Canon S95 that I'll use with CHDK.
Hi Jason, yes of course, i actually did share it - its the one that comes stock with 2.5.4. Only thing I've changed is the loiter_p that i reduced to 1.2.
I should be clear that i spend time making sure everything is straight, that all my props are balanced, and my motors, and do a lot of hand testing (with goggles and gloves etc) before I mess with any of the settings. For info i have an APM1 mounted just on sticky foam, (the cellotape stuff)
My camera arrived today, I got a bargain on a camileo s30, unfortunately its a dud, so cant tell you what its like..., i should have a replacement next week.
And thanks to you too Balloon :)
I enjoyed watching ure Video. Your Copter flies very well. Seems, that the "new" Code is very good. Have to rebuild my "crashed 2.4 quad".
Sorry my mistake, I had messed with the params a bit, for the above video, as i mentioned - this is what i was flying....
The only differences from defaults are:
stab_I and stab_D reduced to zero.
rate_I to 0.08, rate_d to 0.008.
loiter_P was actually left at the default of 2.0 for the video, not reduced to 1.2 as previously stated, I did that later in the afternoon
Help!, My setup is stable and flys well in stabilize mode and Alt hold mode, I dont have any other flying issues except when I switch to loiter, my Hexa yaws to the right, I switch out of loiter to gain control, but Im sure something is wrong?, My mag declination etc is all tuned in
Any suggestions as to yawing while switching to loiter?
Did you enable the compass and do the Live Calibration?
Ill do it again(Lipos are charging....), I should only need to do it once yes? and not all the time?
Yes, you should just have to do it once.
where can i find instruction for live calibration?
It's in the MP. When you click on it, it just tells you to move the copter/board around in the air for 30 seconds. Try to rotate it as close to 360 degrees in all three axis as you can. It doesn't matter if you don't quite get there ;-)
Hello... my hexa flat (3kg,910Kv motors,props 13/6,APM2) fly very well but when i do roll,pitch or yaw it adds throttle and hexa is rising,can somebody tell me what PIDs i need to tune so throttle wont add itself so much,thanks.