Doug Weibel
  • Male
  • Longmont, CO
  • United States

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Doug Weibel's Groups

Doug Weibel's Discussions

APMega - 1.0.1 alpha now in the repository

Started this discussion. Last reply by Uwe Gartmann Aug 16, 2010. 19 Replies

ArduPilot Firmware Version 2.6

Started this discussion. Last reply by Ground Loop Oct 8, 2010. 244 Replies

SuperStar EP Power System questions

Started this discussion. Last reply by Doug Weibel Aug 5, 2009. 3 Replies


Doug Weibel's Page

Profile Information

About Me:
UAS researcher at the University of Colorado, Boulder
Full scale plane and sailplane pilot
RC plane and heli pilot
Please tell us a bit about your UAV interest
UAS as scientific research measurement platforms.
High accuracy state estimation using low cost sensors.

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Doug Weibel's Blog

Proof of Concept test - Extremely accurate 3D velocity measurement with a ublox 6T module.

Posted on December 2, 2012 at 5:30pm 31 Comments


When the ublox 6 series modules were released, I noted that the 6T and 6P modules provided access to the raw carrier phase measurements, and I started thinking about how to use this capability.  My connections through my university research appointment weren't strong enough to get ublox to sample a dev kit to me (they generally don't sample them at all).  Jordi and Chris from were kind enough to use…


Annual Public Service Announcement

Posted on October 19, 2012 at 4:28pm 1 Comment

It is that time of the year when for many of us the furnaces have been turned on for the coming winter and the indoor air is getting dry, so it must be time for my annual ESD Public Service Announcement.


What is ESD?  Electrostatic Discharge!  That little spark you sometimes get when you touch a light switch or some other grounded object.…


Lemon-RX UART and PPM output

Posted on October 19, 2012 at 4:17pm 5 Comments

I have had a Lemon-RX (previously known as Orange-RX) DSM2 6-Channel Receiver (PPM + UART)

sitting around for a bit, and finally got around to hooking it up to my logic analyzer and checking it out today.  I was interested in this RX as an inexpensive option if you need PPM output and run Spektrum/JR gear.  I knew from the spec sheet that the channel resolution on…


Best Quads doing stuff video

Posted on March 21, 2012 at 10:00am 2 Comments

In response to Chris' post of the best AP video ever, I have this offering

Difficulty with using Ultrasonic Ranging (Sonar) for landing flare control.

Posted on January 29, 2012 at 1:30pm 51 Comments

A feature frequently requested is to add support to ArduPlane for using sonar to control the landing flare.The answer, unfortunately, is probably no.  Take a look at this graph I obtained yesterday...

This has been on my to-do list for ages as I have never gotten around to getting some real world data to see if this would work.  Finally got the real world…


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