"Hi Mick,
Yes, I got the same. My solution was to open up google earth first. Then Mission Planner. Not sure if this does anything or not. It just worked after i do it. If knew I wont have wifi or 3G on my iphone where I fly, I prefetch the…"
Mick's Discussions
Mexican jumping bean Hexa...
Started this discussion. Last reply by Mick May 7. 12 Replies 0 Likes
Hi all, the Mexican jumping bean reference is what my Hexa acts like when I activate RTL & Alt Hold. Please read on:Started with drifting Simple mode, heading goes off by up to 90 deg. Then a…Continue
CRASH 2.8.1, 2.9.1
Started this discussion. Last reply by Mick Apr 3. 12 Replies 0 Likes
Greetings... a bit long, but please read on :Hexa, APM 2.5, 2.8.1 A few weeks of trouble free flying. Then while in stab/simple mode, bearing suddenly starts to drift about 60 degrees, but only…Continue
Stable - simple mode drift
Started this discussion. Last reply by R J Hamlett Mar 26. 3 Replies 0 Likes
I have seen a number of similar posts like this, but no one has answered to help, so I'll try to word it differently : Arducopter 2.5, Hexa... while in stable/simple mode, bearing drifts up to 90…Continue
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Mick replied to Mick's discussion Mexican jumping bean Hexa..."Dany managed to get the files up for me. Hope it shines some light on this!"
DistributorDany Thivierge replied to Mick's discussion Mexican jumping bean Hexa...
"Mick asked me to upload his log files here... he has issues with the forum... let's see if it works ..."
Andrew Sommer replied to Mick's discussion Mexican jumping bean Hexa..."I agree usually too high PIDs for a high power of copter will give a up and down movement when attempting to hover.It seems you can never find the right throttle to hold a given altitude. Same thing with other control boards such as KK2.
As…"
Mick replied to Mick's discussion Mexican jumping bean Hexa..."More info: Hexa; motors 880 KV; APM 2.5; v2.9.1
Logs attached (sorry, no Wireless Telem). "
Mick replied to Mick's discussion Mexican jumping bean Hexa..."Thanks Tom, having difficulty uploading the files. I'll get them up soon."
Neill McOran-Campbell replied to Mick's discussion Mexican jumping bean Hexa..."In Alt Hold and RTL your throttle proportional (P) gains or perhaps though less likely your derivative (D) gains are drastically off (way too high)
In your simple mode your correctional proportional gains are too low (once again…"
Tom replied to Mick's discussion Mexican jumping bean Hexa..."Then you might need to Add some P gain.
But like Dany said, to better help you we would like to see the logs from you copter to REALLY be able to help
"
Mick replied to Mick's discussion Mexican jumping bean Hexa..."Thanks for the reply, my motors are 880KV. The Alt Hold P term is at 2.0"
Tom replied to Mick's discussion Mexican jumping bean Hexa..."I would lean more to the PID's for you Alt Hold/ Loiter. I had the same issue until i adjusted the PID's and the jumping bean is no more. How big (KV rating) are your motors? If they are like mine (1000Kv) then you will…"
DistributorDany Thivierge replied to Mick's discussion Mexican jumping bean Hexa...
"Mick pleas add your logs so the "experts" can have a look. "
Richard Boyhan replied to Mick's discussion Mexican jumping bean Hexa..."Did you check your zAccel graph? Sounds like you have a vibration problem."
Mick posted a discussionMexican jumping bean Hexa...
Hi all, the Mexican jumping bean reference is what my Hexa acts like when I activate RTL & Alt Hold. Please read on:Started with drifting Simple mode, heading goes off by up to 90 deg. Then a lethal problem where in Stab mode,it gradually stopped responding to the Rx, and leaned over until it crashed. Dany at Canadadrones has gone beyond the call to help, replaced the APM & helped me go over everything. I replaced the PDB & not so long ago,the GPS. Everything else checks out on the…See More
Dan Banks replied to Mick's discussion CRASH 2.8.1, 2.9.1"I'm still learning how to interpret the logs, but I'll give it a go. Here are my observations from looking at log #85:
Your GPS altitude and your baro altitude generally show movements in the same direction, but do show some…"
Manfred Dickgiesser replied to Mick's discussion CRASH 2.8.1, 2.9.1"It reads the sensors at different frequencies (value of the INS_MPU6K_FILTER). I think 50Hz is default.
So with INS_MPU6K_FILTER = 20, the read frequency is 20Hz.
So if your vibrations are a multiple of the read frequency, you might get an aliasing…"
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