About

Gender

Male


About Me:

Certified Professional Geologist with 20+ years experience in the mineral exploration industry.


Please tell us a bit about your UAV interest

Interested in utilizing fixed and multi-rotor aircraft for aerial mapping, site investigations, and SfM modeling.


Hometown:

Fairbanks


Activity Feed

Carl Schaefer commented on Thorsten's blog post GPS positional accuracy III
"I'm really interested to hear about your RTK setup. Specifically, if you're able to get the Pixhawk to record RAWX messages from the M8T for later use in post-processing and if the M8T is the lone GPS on board, supplying positional information to…"
Jan 13, 2016
Carl Schaefer commented on Gerard Toonstra's blog post Cheap 1-2cm (scale) accuracy for your surveys
"Hi Brandon,
Nice setup and thanks for sharing. I have not tested using kinetic between drone and ground station but would like to test it myself once I get some time. So, please keep us posted.
Here is my setup. Something very simple to test the…"
Sep 17, 2015
Carl Schaefer replied to Hugues's discussion Is there an easy way to retrieve the timestamp of each .bin log record in a csv or excel file ? in ArduCopter User Group
"Hi Hughes,

That 8 is my time zone correction from UT.  So, I'm in Alaska, which is -8 (or -9 hours depending on "daylight savings") .

Column K basically converts the GPS week and GPS Time columns to seconds, for my time zone.
Column L is a…"
Sep 11, 2015
Carl Schaefer replied to Hugues's discussion Is there an easy way to retrieve the timestamp of each .bin log record in a csv or excel file ? in ArduCopter User Group
"Here is a simple example excel spreadsheet that has the calcs to display the local GPS time from the flight *.log file. This allows me to review the CAM messages and figure out which CAM message is linked to my photo timestamps.  Sometimes the…"
Sep 7, 2015
Carl Schaefer commented on Gerard Toonstra's blog post Cheap 1-2cm (scale) accuracy for your surveys
"@brandon

I have successfully used this tiny micro SD card logger from sparkfun that uses OpenLog:
https://www.sparkfun.com/products/9530

All I did was wire it up to the M8N eval board from CGS shop
http://www.csgshop.com/product.php?id_product=170…"
Aug 13, 2015
Carl Schaefer replied to Jakub's discussion When moving in AltHold or Loiter copter shoots up - looking for advice
"@Jakub - I'm wondering if you were able to solve your problem at all? Was it the vibrations?
I have the same problem on a large wooden hex with 15" props. It is rock solid at hover with nil vibrations but if I move relatively fast in Alt Hold it…"
Mar 22, 2015
Carl Schaefer commented on Jesus A's blog post SAMSUNG NX2000 (different trigger than rest of NX series) Trigger from APM/Pixhawk
"Just to confirm in case anyone is following this thread....  I finally revisited this camera trigger and picked up a Samsung NX1100 after being disappointed with a Canon S100. I can confirm that with a NX1100 all you need to build for a trigger is…"
Sep 20, 2014
Carl Schaefer replied to Carl Schaefer's discussion Resume Auto Mission after Battery Change
"...to followup in case this comes up for others out there:

I did a flight today and my protocol assumptions were correct. After changing batteries and getting the aircraft airborne again, I triggered the auto mission flight mode first and the…"
Jun 4, 2014
Carl Schaefer posted a discussion
If I have a large survey grid area that I want mapped and it requires several flight battery changes to complete, what is the best method to resume my auto mission using mission planner?For example:If I have a 50 waypoint mission setup and after 30…
Jun 2, 2014
Carl Schaefer commented on Jesus A's blog post SAMSUNG NX2000 (different trigger than rest of NX series) Trigger from APM/Pixhawk
"That is good. 1 sec is really nice allowing for a faster moving aircraft while keeping a high level of image overlap.

What gimbal and airframe are you using?

Cheers,
Carl"
May 2, 2014
Carl Schaefer commented on Jesus A's blog post SAMSUNG NX2000 (different trigger than rest of NX series) Trigger from APM/Pixhawk
"Hi Jesus,

Nice work and thanks for the info.

I assume the camera has to auto focus for every shot and presumably taking some time to do so.... do you see a long shutter delay between consecutive shots? What is the fastest you can shoot with this…"
May 2, 2014
Carl Schaefer replied to Haygood's discussion Setting Channel assignments at Pixhawk for Spektrum DX7
"You have to change the switches within your Spektrum transmitter via the Setup... Switch Select screen.
Or if you want to use two switches so you can enable 6 flight modes (you will use the Gear and Flap switches in a mixed configuration on your…"
Apr 5, 2014
Carl Schaefer replied to Dave Williams's discussion Using AUX pins as relays for CHDK
"Great! Thanks guys for the help...

Carl"
Mar 17, 2014
Carl Schaefer replied to Dave Williams's discussion Using AUX pins as relays for CHDK
"Hi Hugues,

I'm not sure if you're reading this thread anymore but I was able to get my Canon S100 with CHDK script running to be triggered by a CAM_TRIGG_DIST (=5 meter for testing indoors) on a pixhawk with my camera cable connected to RC11 (Aux…"
Mar 16, 2014
Carl Schaefer replied to Dave Williams's discussion Using AUX pins as relays for CHDK
"Hi Marco,
Could you help me out and post a picture of your assembled device. I'd really like to build this so I can get the 5v necessary to trigger my CHDK script off the pixhawk but I have nil experience reading electronic schematics and how they…"
Mar 16, 2014