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Donka replied to Forrest Frantz's discussion Vibration--Finally Solved ... The Frantz Strut
"Yeah, I looked around and watched his old videos to deduce that, he just posted another recent video using the impulse for small turbine shafts using 2 accelerometers and a pulse led.  That's why I asked about buying other accessories.  He seems to…"
Jun 5, 2016
Donka replied to Forrest Frantz's discussion Vibration--Finally Solved ... The Frantz Strut
"Did you buy one Forrest, if so did you buy additional accelo's or extras?  
Was hoping the site was in Australian dollars :) since our exchange is good right now."
Jun 4, 2016
Donka replied to Gary McCray's discussion Vibration Isolation and Dampening of APM / PX4 for version 2.9
"Thorsten,
Nice test and data.  Will definitely look to their solutions when I build my next larger auto-drone, I see the Drotek stuff is made in France.  Have never ordered from either before, both look to be in EU.  Found a quick $43 solution with…"
Jun 3, 2016
Donka replied to Gary McCray's discussion Vibration Isolation and Dampening of APM / PX4 for version 2.9
"Thanks for the response, that's what I figured, look forward to hearing more about it. 
I went ahead and ordered up some BLHeli OneShot ESC's to try that functionality.  Been eyeing a Taranis for a while due to it's built in telemetry, now even more…"
Jun 2, 2016
Donka replied to Gary McCray's discussion Vibration Isolation and Dampening of APM / PX4 for version 2.9
"Thanks Hugues, 
Going to try a RCT solution for now since I had to order other parts, and am on the west coast in the US.  
Looks like a really nice board though, especially for auto-pilot missions on a large extended run copter."
Jun 2, 2016
Donka replied to Gary McCray's discussion Vibration Isolation and Dampening of APM / PX4 for version 2.9
"Yeah I'll try, but after a stupid zero throttle 15ft drop during an RTL this bird is not flying quite right.   You can see my original #'s when I first built this copter back on page 16 or 17.  Only thing I changed over the years was putting a nomex…"
Jun 2, 2016
Donka replied to Gary McCray's discussion Vibration Isolation and Dampening of APM / PX4 for version 2.9
"Wow Frantz, 
Good to see you are still researching and improving years on, you caught a lot of flack for your hard mount suggestions.  I too just ordered up a PixRacer yesterday after seeing Thorsten's results.  Going to try it on a 450 flame in…"
Jun 2, 2016
Donka replied to johan kalthof's discussion esc does not correspond according the stick position
"Do you know the difference in hardware/firmware of those 2 Hobbywing ESC's?  
I wonder if it's ArduC auto throttle trim doing something weird.  However manually adjusting the values to try and resolve it doesn't seem to help either."
Aug 11, 2015
Donka replied to johan kalthof's discussion esc does not correspond according the stick position
"I can also confirm I am having the same issue on a Hobbywing Quattro 4x ESC.  Was an older quad I built and had broke an arm on an accidental zero throttle command durinf final decent of a successful RTL.   Finally got around to fixing this frame…"
Aug 11, 2015
Donka replied to Gary McCray's discussion Vibration Isolation and Dampening of APM / PX4 for version 2.9
"Forrest,
I tried your Excel worksheet but got "Error 6 - overflow".  Do I need to limit the flight time to reduce total data?
Anyhow my setup with 4 x 3/8" Zeal squares ~ 1/4 of the way in from the long edges of the APM case in order to miss the…"
Aug 20, 2013
Donka replied to William Burkert's discussion APM 2.5/6 and Light Sensitivity in ArduCopter User Group
"This was my method.
I cut 2 small pieces of tape and placed itwhere the indicator LED's are before spraying the inside flat black with some auto primer. Once dry peeled those back, and while it's hard to see in the second photo, but you can make out…"
Aug 13, 2013