Oklahoma City, OK

About Me:

Opensource Software Systems / past electronics engineer, DBA who loves the outdoors. I'm returning to RC / electronics.

Please tell us a bit about your UAV interest

My primarily UAV interest is FUN. I'd like help provide weather and wild life data over unmanned parts of our country. IE go all the places I could never go my self.


Oklahoma City

Activity Feed

Mark Grennan commented on Thomas J Coyle III's blog post FAA Public Meeting: Unmanned Aircraft Systems Test Site Program
"Thanks for posting this.  I have been working with  Paul Gaasbeck - Operations Manager - Elgin, OK to gain access to R5601 in SW OK.  You can fly there without a COA.  I'd like to do some UAV multi plane formation flying and it's a little hard under…"
Mar 28, 2013
Mark Grennan posted a discussion
My next project will be a HexCopter with a PX4 for the flight controls and a Raspberry Pi running ROS for grater environment sensing.  The idea is to, not just fly between waypoints but, avoid trees.   I've selected the Raspberry Pi and ROS because…
Feb 22, 2013
Mark Grennan commented on Christiaan van Vollenstee's blog post APM 2.5 Power Layout
"What about the 20A ESC that are supplied by 3DRobotics?  All the load 760ma (I measured on my APM1.4) going through one ESC/BEC seemed like a load and fused the ground trace.
I've thought about creating another power lead from the power distribution…"
Feb 18, 2013
Mark Grennan posted a blog post
 Oklahoma Governor Mary Fallin announced a strategic plan for the state's unmanned aerial vehicle industry - A Strategic Plan for the Development of an Unmanned Aerial Systems Enterprise in the State of OklahomaFrom their home page - "USA-OK is a…
Feb 14, 2013
Mark Grennan posted a blog post
Searching Youtube I found this video.  I wonder how many Arducopters are still in parts?
Feb 13, 2013
Mark Grennan commented on Mark Harrison's blog post Chris Anderson at AMA Expo 2013
"Chris,  this is your best talk yet. Perfect for the RC group. Take this talk and add more about building your own parts with 3D printers. (Maybe someone else did that talk at AMA.)  But but the two together and you can explain the future to anyone. "
Feb 10, 2013
Mark Grennan posted a blog post
The best way to learn how to change the PID and other settings in ArduPilot is with a simulator.  I've made a quick video to show how to setup Ardupilot with Mission Planner and X-Plane.  When you get this working you can change the PID and other…
Feb 10, 2013
Mark Grennan replied to Zafer Turkeli's discussion Motors not running with APM 2.0,
"I found the best way to test ESC is one at a time.  http://diydrones.com/forum/topics/can-t-program-diy-drones-20a-esc?...
I had a problem where two ESC would arm but two wound not.  This turned out to be because my ESCs where not calibrate- able.…"
Feb 4, 2013
Mark Grennan commented on Chris Anderson's blog post Here's the page for local DIY Drones fly/meetup groups. Add yours (or make one)!
"Oklahoma UAV Flyers"
Feb 4, 2013
Mark Grennan posted a discussion
I think it's time for a Documentation Tab on the main menu.  Do we have a Documentation team?I'm an electronics Tech and RC hobbyist and I'm a little embarrassed to say it took me two years to build my 3D-Quad. I maid-ed it last weekend. Blogs are…
Feb 4, 2013
Mark Grennan replied to Alex's discussion Output died on MUX
"I feel your frustration. After a year of building my quad, it DIED.  No lights. (Yes I'm slow and mythological )  I was just read to fly it for the first time.   After removing everything from the AP main board I powered it on and felt around.  The…"
Jan 25, 2013
Mark Grennan replied to DFX's discussion Can't program DIY Drones 20a ESC
"I'm glad this is a hobby.  I've had my ArduPilot 1 and QuadCoter for over a year and been fussing with this very thing the whole time.  Of the four none of them go into program mode like the instructions said.
I've seen lots of people almost get…"
Jan 20, 2013
Mark Grennan commented on Andreas M. Antonopoulos's blog post Developing code for the APM - Webinar (TODAY)
"I'm in."
Jul 8, 2012
Mark Grennan posted a blog post
A new home for hackers and makers in Oklahoma City. The space has been cleaned and the walls have been painted. Soon the doors will open on a new makers space. OHM Space is an Oklahoma nonprofit corporation that seeks to create a safe, entertaining…
Jul 29, 2011
Mark Grennan commented on Chris Anderson's blog post APM 2 out of beta!
"This is great!  More studding, more documenting."
May 2, 2011
Mark Grennan posted a blog post
I attended the first annual UAV airshow and was happy I did.  I learned OSU aerospace design team has been winning the AIAA contest for so many years, they dropped out this year to start their own contest.  They divided the students into two groups,…
May 1, 2011