About

Gender

Male


Location

Longmont, CO


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.


Hometown:

Colorado


Activity Feed

Doug Weibel commented on Chris Anderson's blog post ADS-B for Dronecode-based platforms (Solo, Pixhawk etc)
"Looks like a nice product that works towards airspace integration but please keep the marketing hype in check:  "able to detect all aircraft threats within a 30 statue mile radius in real time".  Really?  ADS-B Out is not mandated for general…"
Feb 24, 2016
Doug Weibel replied to Martin's discussion Extending logging time in ArduPlane User Group
"There is no Attitude Slow.  If you set both to zero you will get Attitude NO, meaning no attitude data will be logged.  This may be OK, depending on what you want, and will certainly extend the logging time."
Nov 18, 2014
Doug Weibel commented on Doug Weibel's blog post Proof of Concept test - Extremely accurate 3D velocity measurement with a ublox 6T module.
"It could affect the pseudo range, Doppler and carrier phase measurements , but the extent to which it would I don't know.  Velocity measurement assumes there is a drift rate in the RX clock.  If the regular XO clock drift is nicely linear with time…"
Aug 18, 2014
Doug Weibel commented on Doug Weibel's blog post Proof of Concept test - Extremely accurate 3D velocity measurement with a ublox 6T module.
"It could affect the pseudo range, Doppler and carrier phase measurements , but the extent to which it would I don't know.  Velocity measurement assumes there is a drift rate in the RX clock.  If the regular XO clock drift is nicely linear with time…"
Aug 18, 2014
Doug Weibel commented on Doug Weibel's blog post Proof of Concept test - Extremely accurate 3D velocity measurement with a ublox 6T module.
"Hello Max,

At each measurement epoch the receiver clock error is modeled as a fixed drift rate (s/s).  This is all that is possible/needed as the velocity solution is a least squares calculation using data from a single measurement period.…"
Aug 17, 2014
Doug Weibel commented on Roger Sollenberger's blog post Dronecon 2014 Call for Submissions!
"Serious?  DroneCon is not before/after AVC???"
May 13, 2014
Doug Weibel commented on Nick Arsov's blog post AUAV-X1 , a new vision of the PX4 autopilot
"I have configured the SP0 pin per the data sheet for the next-to-LSb to be zero and have tried 0xB0 and 0xB1 in accordance with the data sheet which may of course be wrong.  I can set up to just bang all the addresses and look for a response though……"
Mar 18, 2014
Doug Weibel commented on Nick Arsov's blog post AUAV-X1 , a new vision of the PX4 autopilot
"Hi Nick,

The files you uploaded are for the 21000 series devices, which are 2 axis devices, versus the 21100 series devices which are 6+3 axis devices.  Although there are some similarities there are very significant differences.  Is there some…"
Mar 18, 2014
Doug Weibel commented on Nick Arsov's blog post AUAV-X1 , a new vision of the PX4 autopilot
"Does anybody have any actual experience with the Maxim21100?  I have a couple sample parts but thus far have not been able to get anything out of them.  Of course the data sheet doesn't help - it is missing all the register bitfield info, etc. etc."
Mar 18, 2014
Doug Weibel commented on Laser Developer's blog post Open Source Laser Range Sensor Converts the Speed of Light into the Speed of Sound.
"@Ranaud - No.  If you want plug and play, look at the SF02.  The SF02 is more money, but also 4x the range.

@Laser Developer - I have also been testing the SF02 and have been really happy with it thus far.  A cursory read of the OSLRF-01 data sheet…"
Feb 6, 2014
Doug Weibel commented on Paul's blog post Soon we can mint our own carbon prop ? frame ?
"Hi Robert,
Seems like that is just a programming issue to me.  Why can't it lay one layer down pulling the fiber left/right and the next layer pulling the fiber front/back?  I think weave is mostly just a convenience as you can handle fabric whereas…"
Jan 29, 2014
Doug Weibel commented on Thomas J Coyle III's blog post The Sparkfun 2014 AVC has been announced!
"OK Robert,
I'll be twisting Peter's arm to come up with something for the plane course that will take at least an hour, maybe 2 hours - 30 or 40 laps of the reservoir perhaps? :)  Then we will see… 

I'll start planning entertainment now.  Nobody…"
Nov 20, 2013
Doug Weibel commented on Stefan Gofferje's blog post 3m wingspan fiberglass UAV from Hobbyking
"@Macboffin - your comment about shiny polished finish is incorrect.  All modern high performance sailplanes have highly polished finishes which reduce skin friction drag and allows for laminar flow.  Negative effects of rain, bugs, etc on the…"
Jul 17, 2013
Doug Weibel commented on Doug Weibel's blog post Lemon-RX UART and PPM output
"Correct - only 100 steps.  I don't remember what the 3dr ppm has for resolution but the last ppm encoder I programmed I used 1000 steps."
May 28, 2013
Doug Weibel replied to Luke Horwood's discussion Auto-Landing Glide Slope in ArduPlane User Group
"What is the motor doing during this time?  Are you maybe just expecting it to come down faster than the airframes sink rate? There is no way my SkyWalker will drop 100 feet in 10 seconds at normal gliding airspeed unless I deploy flaps.  If the…"
May 7, 2013
Doug Weibel replied to Ashur Gelyana's discussion Battery Readings
"This is documented in the wiki - http://code.google.com/p/ardupilot-mega/wiki/Voltage

If you are running high voltage you may need to wire a custom voltage divider.  Otherwise it should be fairly plug and play."
Apr 4, 2013
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