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Losing all pitch for a moment when flying forward

Started this discussion. Last reply by Jose Angel Dec 1, 2011. 3 Replies

Hi all, I'm back on testing ACM, now with 2.0.54. My last test was probably with 2.0.40 or similar.I have tunned my pids and I'm pretty satisfied with the results. My only problem is that when I'm…Continue

Y6 redundancy test (FAIL)

Started this discussion. Last reply by DaveyWaveyBunsenBurner Oct 31, 2011. 32 Replies

I have done a redundancy test with a Y6:Motors: MK3638Board: arducopterESC: Plush 30AFrame: y6 rc-carbonLipo: 3S5000Weight: 2.3kg I have tried to takeoff with a motor disconnected but the copter was…Continue

Camera gimbal

Started Oct 13, 2011 0 Replies

Any succesfull gimbal experiences with big DSLR on arducopter 2.X?Any video to share, preferably with no software stabilisation ? Continue

ACM2 Navigation

Started this discussion. Last reply by Jose Angel Jul 14, 2011. 8 Replies

As ACM2 continues improving (thanks to Jason and the rest of arducopter team) and my quad is pretty stable, I'm ready to test waypoints/navigation features. I posted my first aborted experience in…Continue

 

Jose Angel's Page

Latest Activity

Shyam Balasubramanian replied to Jose Angel's discussion Battery recommended for Turnigy 9x
"Hi Justin/ Other experts on forum, Can you help me with what kind of 'connector' will I need to purchase for the battery option given earlier (long back) in your link…"
Feb 15, 2013
Jose Angel left a comment for Andre
"The Y6 was from a friend of mine... but he abandoned it :("
Jul 2, 2012
marc.kulhavy commented on Jose Angel's blog post Arducopter PID tunning howto video
"Johann, first of all, make sure that all the motors are running in the correct direction. Recalibrate the ESCs throttle range one by one. If this does not help, connect the shield to the Mission Planner and watch the heading. It shouldnt change…"
Jan 14, 2012
Johann Van Niekerk commented on Jose Angel's blog post Arducopter PID tunning howto video
"Guys what do you tune if you have major yaw issues . I cant get my hexa of the ground to do in flight tuning because it keeps yawing so bad i cant controll it thanx Johann "
Jan 14, 2012
marc.kulhavy commented on Jose Angel's blog post Arducopter PID tunning howto video
"Just one hint on tuning Rate_P for acro and stab mode. The stab rate_p should be lower than in acro mode, as stabilze mode is two contol loops nested around each other. Anyway, even if you don't use acro mode for flying, try to find a good…"
Jan 14, 2012
Justin Griggs replied to Jose Angel's discussion Battery recommended for Turnigy 9x
"I just received the one you mentioned, it works great!  I did have to change the connectors though. http://hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=6955"
Dec 10, 2011
Javio replied to Jose Angel's discussion Battery recommended for Turnigy 9x
"There is a little confusion about the best 2S vs 3S better battery for the 9X. If conceptually it is true that a bigger drop out voltage between input and output leads in a bigger heat dissipation, the 7805 regulator has been designed to give the…"
Dec 10, 2011
Jose Angel commented on Bill Nesbitt's blog post AutoQuad ESC32 v1r5
"I love the Bill's approach when something does not meet his needs. I will do my own :) Well done!!"
Dec 7, 2011
Jose Angel replied to Jose Angel's discussion Losing all pitch for a moment when flying forward
"I attach the log for a flight with this behaviour. Hope that helps to identify the problem :)    "
Dec 1, 2011

Developer
Jason Short replied to Jose Angel's discussion Losing all pitch for a moment when flying forward
"The ATT message in the logs can say what happens. I think it's a combination of things including acceleration on the DCM, and iterm  buildup.  "
Nov 30, 2011

100KM
u4eake replied to Jose Angel's discussion Losing all pitch for a moment when flying forward
"An onboard log should be able to explain where this behaviour comes from."
Nov 30, 2011
Jose Angel posted a discussion

Losing all pitch for a moment when flying forward

Hi all, I'm back on testing ACM, now with 2.0.54. My last test was probably with 2.0.40 or similar.I have tunned my pids and I'm pretty satisfied with the results. My only problem is that when I'm flying forward in stabilize mode with the nose down (say pitch = -30º or -40º ) the quad always loose all its pitch and even moving its nose up (pitch = +30 or +40º) for a moment with no stick movement on my side. After 1 or 2 seconds the nose return down, and it flies normally.I cannot avoid this…See More
Nov 30, 2011
Juan Carlos Hdez commented on Jose Angel's blog post Arducopter PID tunning howto video
"very interesting. i will try to increase stabilize I to eliminate wobble in fast descents."
Nov 1, 2011
steve F11music.com commented on Jose Angel's blog post Arducopter PID tunning howto video
"I've never used acro mode. How do you access it in the latest 2.0.49 code?"
Nov 1, 2011
DaveyWaveyBunsenBurner replied to Jose Angel's discussion Y6 redundancy test (FAIL)
"All, i found thus interesting. Especially pos number 7: http://www.rcgroups.com/forums/showthread.php?t=1378824 Happy halloween!"
Oct 31, 2011
Don Cramer commented on Jose Angel's blog post Arducopter PID tunning howto video
"PID Tuning has always been tougher for me.  The method shown in these videos looked promising (You can read it a 100 times but sometimes it helps to see). Tuning acro mode then on to stabilize.   For myself acro mode was best at around…"
Oct 18, 2011

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About Me:
Just a beginner in the UAV world
Please tell us a bit about your UAS interest
Unmanned vehicles and aerial photography
Hometown:
Madrid

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Jose Angel's Blog

Arducopter PID tunning howto video

Posted on October 15, 2011 at 3:00am 10 Comments

Finally, someone has created a PID tunning howto video, from scratch to perfect stabilize flight, that I think will be very useful for the arducopter community, specially for those flying non stock frames.

The concepts are already in the AC2 PID tweaking guide developed by Jason, but a visual howto helps a lot!

 

The guide has been created by…

Continue

Comment Wall (2 comments)

At 1:33am on September 22, 2011, afernan said…

Jose Angel:

acabo de hacer un post sobre un problema que he tenido quemando dos placas 2560

http://diydrones.com/profiles/blogs/arducopter-burning-boards-experiences

 

Te agradecería que lo leyeras por si se te ocurre alguna idea al respecto.

 

Un saludo

 

Angel

At 10:24pm on September 22, 2011, afernan said…

Parece que no le ha gustado este Post a Chris Anderson y no lo ha aprobado. Te adjunto el texto que puse:

______________________

This is a post to compile experiences in burning boards, since I´m just burned two APM 2560, and I really don´t know yet why this happens.
 
All started after a crash against a tree (testing AUTO mode with fw2.0.42). The copter stayed some seconds with the propellers blocked in the tree branches and with the thrust at the middle that it had. After that, I started again and only two of the 4 motors worked. The other two did nothing.
 
I went home and reloaded the code, reset all but still the problem there. While doing that checks, a small burning explosion (with noise and smoke) happens in some part of the board. The APM 2560  was dead (but not the Shield board, tested in other APM).
 
Then I bought a new APM2560 board, installed againg on the copter and just after switching on...ptass¡ other small explossion-burning-smoke on the board. Switched off very quicky (I was prepared), but in this case the board survived aparently!!!  (I´ve mounted in other copter and it flyes perfect).
 
So, my hipothesis is that the problem is in some ESC damaged with the crash, not in the board. The copter is under quarintene up to clarify this.
 
Hope this help others having this burning problems, and ideas are wellcome

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