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andreas kellermann commented on Chris Anderson's blog post Intel gives sneak peak of drone development board
"250$ for a complete x86 based flight controller with camera and hd link in a tiny package, sounds like the Pixhawks will be outdated very soon?"
Apr 19, 2016
andreas kellermann commented on DROTEK's blog post Drotek releases first L1 RTK GNSS compatible with PixHawk (ArduPilot/PX4)
"Great Project!

@Emlid
Maybe this helps motivate you to put some more effort into the reach project? I mean the software is still beta at best and the Pixhawk integration is nowhere. Also your "todo" list on your wiki looks pretty much the same as…"
Feb 6, 2016
andreas kellermann replied to Tersus GNSS's discussion L1/L2 RTK trial user wanted
"Hello Terus Team
I would volunteer to compare your RTK solution to the reach system, with which I have been working for the last couple weeks. 
I`m building copters and planes as a hobby for 5 years now (mapping and photography). Currently I`m a ee…"
Dec 28, 2015
andreas kellermann replied to Randy's discussion Pixhawk 1MB flash limit
"Great! Wasn`t aware of that one! Thank you."
Dec 20, 2015
andreas kellermann replied to Randy's discussion Pixhawk 1MB flash limit
"They had a discussion on the Emlid Reach forum about the Pi Zero. The Emlid team said it would be possible to use with their Navio2 shield, but currently you would need an adapter cable to match the Zeros pins to the Navio.

The zero is pretty much…"
Dec 20, 2015
andreas kellermann replied to Randy's discussion Pixhawk 1MB flash limit
"Raspberry pi 2 i/o shield are already available and offer 1GB of ram. Not that much bigger than a pixhawk. Or use the raspberry zero with a custom shield. Tiny.
So instead of using a lot of resources fixing the Pixhawk it wouldn`t it make more sense…"
Dec 20, 2015
andreas kellermann replied to Randy's discussion Pixhawk 1MB flash limit
"Because they tried to squeeze more and more code into the original Arduino chips. Which was obsolete for years anyway. Trying to program everything as efficient as possible makes development very slow, as Randy already stated.

Also I`m a bit…"
Dec 19, 2015
andreas kellermann replied to Bill Piedra's discussion New RTK GPS on Indiegogo
"Interessting. Emlid has told me that they will use Golonasss/Beju and later on Gallileo as well for their RTK solution. Since as you say the number of satelites with good reception is critical.

The trouble with that is that the update rate of the…"
Dec 9, 2015
andreas kellermann replied to Bill Piedra's discussion New RTK GPS on Indiegogo
"For rover and base module? Sorry, I find the website rather confusing. They should state much more clearly what exactly I should buy from them.

How easy is the system to setup and run? Do you need an additional datalink or can it send correction…"
Dec 7, 2015
andreas kellermann replied to Bill Piedra's discussion New RTK GPS on Indiegogo
"Depends...
Tersus is 2x800$ isn`t it?

Reach RTK is much smaller and if you combine a base (250$) with a Navio+ flight controller with RTK lib for the same price as a Pixhawk without GPS module... Then it`s a great deal. "
Dec 7, 2015
andreas kellermann replied to Bill Piedra's discussion New RTK GPS on Indiegogo
"Impressive table test! I`m still messing around with my units. 7 green satelites on base and rover, but still no float/fix...Hmmm??? 
Anyway, great to see that it "should" work."
Dec 6, 2015
andreas kellermann replied to Hugues's discussion Tiger motors-propellers combinations for an heavy lift octocopter in ArduCopter User Group
"Hi Hugues
I would recommend to look also at the XOAR beach wood propellers. I`m using the 14x5 and 13x4 on a 2kg quad and a 3kg Hex. Agreed, they are more expensive (2-3x), but lighter than the APC`s, factory balanced  (well you can balance the APC…"
Sep 3, 2013
andreas kellermann replied to Randy's discussion ArduCopter-3.0.1 released!
"Hi folks
I noticed that the vcc monitoring with the 3dr power module is not very stable and approx 1v to high (3s) .
There is no manual volt adjustment tool anymore, so I reduced the voltage divider to 9 and now it's almost perfect at 12.6 for a…"
Aug 18, 2013
andreas kellermann commented on Joshua Johnson's blog post Liquid Robotics Launches Autonomous Seafaring Data Center
"Hmm, looks like lots of moving parts. I wonder how long it can actually operate in a ocean before for ex algea growth cause a failure?"
Apr 9, 2013
andreas kellermann replied to andreas kellermann's discussion ESC`s for MT3506-25
"Hi Erman
Thx for that. Somehow it never showed up on google :(

I will grab a couple of te 18As there and we'll see..."
Apr 6, 2013
andreas kellermann replied to Chris Anderson's discussion Feedback on new manuals
"Hi there
If you are working on new manuals, are you also including new frequencies?
If so, I found the official frequency plan for Switzerland as PDF. There are some differences, ex the 433mhz Band you can use 1mW on some frequencies, but up to 2.5W…"
Apr 5, 2013
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