San Diego, CA

About Me:

Heli & fixed wing

Please tell us a bit about your UAV interest

Open source, Arduino, and R/C.. what's not to like


San Diego, CA

Activity Feed

Ground Loop replied to svein arne skansen's discussion 3 or 4 cell in ArduCopter User Group
"I'd really like to get back to the original questions before the redundant 'Zippy vs Premium' thread, and see if we can collect more data samples for 3S vs 4S.

My own interest is in maximum 'hover time' rather than performance or lifting power.  To…"
Oct 7, 2013
Ground Loop replied to svein arne skansen's discussion 3 or 4 cell in ArduCopter User Group
"Also watch out for the current crop of HK Zippy's using 8ga wire.  Egad!  That's a lot of wasted copper and weight."
Oct 3, 2013
Ground Loop commented on Chris Anderson's blog post Announcing the next era at 3D Robotics
"Ah, the luxury of being close to 3DR in San Diego.. when a wrong part gets into a kit, I drive down and get it sorted.

I have high hopes for this funding, and really staying the course on Open designs.  3DR's PX4 is my next project, because it is…"
Oct 2, 2013
Ground Loop replied to Hugues's discussion 6S Battery comparison on some most common brands : Turnigy, Zippy, Kypom in ArduCopter User Group
"In my humble opinion, all the manufacturer ratings are 'guidelines' or relative comparisons at best, and total bunk in other cases.

I use a battery analyzer to put a constant 100 or 150W load on the battery and plot voltage (and energy) for each…"
Oct 2, 2013
Ground Loop commented on Arthur Benemann's blog post [Update] DroidPlanner v1.0.0
"I've actually strapped a Nexus7 to my forearm and used it while flying. Very nice!"
Sep 28, 2013
Ground Loop replied to Mark Leaming's discussion Hexacopter crashes violently; APM 2.5+ ArduCopter 3.0.1
"7 minutes of Hexa flight.. what kind of battery?  Is it possible the battery died or browned out?  I ask because my old/tired 3S/5Ah batteries petered out right around 7 minutes and would have failed."
Sep 24, 2013
Ground Loop replied to criro1999's discussion Lipo 20C vs 40C, only 0.1 min hovering difference
"It's also widely recognized that the C ratings for batteries are grossly inflated and should not be taken literally.
It's mostly useful as a comparison of two different batteries from the same vendor.  Higher C rating has lower internal resistance,…"
Sep 24, 2013
Ground Loop replied to Rob Ratcliff's discussion Motor Test Mavlink Message
"I have reported in other threads that I have been unable to get [test] [motors] to work at all in APM:Arducopter 3.0.1 with a Y6.  The only way to spin individual motors is as Stephen said, using a direct Rx connection or pulse generator.  The wikis…"
Sep 24, 2013
Ground Loop replied to Rainer's discussion No dataflash log
"You might try the "Clear Logs" command in that Terminal window.  It seems to erase the whole log area all the time, and takes about a minute.

If things are really messed up, maybe Save All Parameters to a file, then in terminal setup/reset (wipe…"
Sep 24, 2013
Ground Loop replied to Mr Gecko's discussion Lightened 3DR Y6
"I don't have any insight, but agree that you could probably remove some material from the full arms.
I just don't know how much weight you would actually save.  Most of my build weight is in the battery and motors, with the aluminum arms being a…"
Sep 24, 2013
Ground Loop replied to Motion Man's discussion 3.0.1 Auto & Loiter with Failsafe
"Very interesting.  I was under the impression that (contrary to documentation) the Loiter Delay and Loiter Turns actually *were* paying attention to the Altitude parameter.

I found that when I left it at zero, I was getting altitude drop (to…"
Sep 24, 2013
Ground Loop replied to Brad Cameron's discussion Anyone want a free APM 2.5?
"I would be thrilled to buy this board from you and attempt a repair.  Free is too little. :)
I'm looking for an APM for my rover project, and would be willing to risk some reliability/debug for cost.
Let me know.

(I'm in San Diego, and can try to…"
Sep 24, 2013
Ground Loop replied to Steffen Kupka's discussion APM 2.5 Super simple mode on ch7 or ch8
"I have Simple Mode w/ Super Simple Mode on one of my six flight mode selections.
I only tried it a few times, but found it did nothing. (ie, acted just like Stabilize)
In an earlier configuration, I did use Simple Mode (w/out super simple mode) with…"
Sep 24, 2013
Ground Loop replied to Randy's discussion ArduCopter-3.0.1 released!
"I too wanted to come in and say that I'm totally thrilled with this software release, on an APM 2.6 and Y6.
Really stable flight, excellent missions, very predictable behavior.
I continue to have these two bugs to report:

[test] [motors] Does not…"
Sep 24, 2013
Ground Loop replied to John Campen's discussion Brushless Gimbal setup using APM gimbal controler
"I am reading this thread with interest, as I was hoping to learn the same thing.
I have the APM 2.6 running fine, and want to add a stabilized gimbal for a Hero camera.
Most folks seem to be bolting on an autonomous gimbal, like the Tarot, but then…"
Sep 19, 2013
Ground Loop replied to Raph's discussion Y6 battery life. is something wrong?
"One quick comment on Raph's original post.. I noticed he said "Turnigy nano-tech 5000mAh 3S 25-50C" pack.
I have this exact battery and found it to be a terrible disappointment.. worse in performance than the zippy 5000 packs that cost less.  I have…"
Sep 19, 2013