Geoffrey L. Barrows
  • Male
  • Washington, DC
  • United States

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Geoffrey L. Barrows's Discussions


Geoffrey L. Barrows's Page

Latest Activity

Geoffrey L. Barrows commented on Chris Anderson's blog post AIrDroids (PocketCopter) ceasing operations
"it is too bad to hear about failures but I am glad the team was willing to share lessons learned. Probably the biggest thing that stuck out for me was the cost of ramping up too quickly- one misses the opportunity to iron out the kinks. 3DRobotics…"
May 22
Geoffrey L. Barrows commented on Colin Snow's blog post Why Drones Are the Future of the Internet of Things
"I agree with your article, though it could happen much more drastically than one might expect. I gave a talk at the "Trillion Sensor Summit" last year at Stanford on this. The trend is towards smaller and smaller drones produced in higher…"
Dec 2, 2014
Richard Lucas replied to Geoffrey L. Barrows's discussion Want to speak with UAV operators using systems for structure/building inspection
"We were doing a pilot inspection last week on a commercial property in Europe and would be glad to share experiences. We had issues going closer than 6 meters 20 ft to the building"
Nov 23, 2014
Istvan Pall commented on Geoffrey L. Barrows's blog post Arduino Pro Mini optical flow sensor
"Hi Geoffrey, any progress with your optical flow sensor since 2011?"
Jun 8, 2014
Kjetil Kjernsmo commented on Geoffrey L. Barrows's blog post 11 gram Arduino-powered laser rangefinder
"I'm looking for a range finder that could be used for obstacle avoidance for a plane traveling at about 5 m/s around the canopy of a forest. At that speed, the autopilot would be a hurry to ascend if something is detected at a 5 meter range, so…"
May 2, 2014
Geoffrey L. Barrows commented on Geoffrey L. Barrows's blog post Visually stabilizing a Crazyflie, including in the dark
"@microuav- PM sent @Jack- For us moving to a BGA version makes sense when we're ready to put more $ into the fabs. Personally I wish they'd just release a 28-pin or 40-pin QFN version of their STM32F4s- we don't necessarily need a lot…"
Mar 31, 2014
Greg Dronsky commented on Geoffrey L. Barrows's blog post Visually stabilizing a Crazyflie, including in the dark
"@Geoffrey that's great that you are discussing a deal with Chris. I have my money in my hand, and I'm waiting for it to show up in the store :). I'm thinking about some new contraction based on what i found here and some other info…"
Mar 30, 2014
Jack Crossfire commented on Geoffrey L. Barrows's blog post Visually stabilizing a Crazyflie, including in the dark
"The STM32F429 is a beast, relatively speaking.   The QFP ARM microcontrollers still suck compared to what they're offering in BGA's.  Why can't someone just make a super board cam using the latest DSLR sensor technology?"
Mar 29, 2014

Profile Information

About Me:
Founder of Centeye, Inc.
Please tell us a bit about your UAV interest
Visual navigation for MAVs, embedded vision, bio-inspired signal processing
Washington, DC

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Geoffrey L. Barrows's Blog

Visually stabilizing a Crazyflie, including in the dark

Posted on March 28, 2014 at 6:44am 10 Comments

I've been working on adding visual stabilization to a Crazyflie nano quadrotor. I had two goals- First is to achieve the same type of hover that we demonstrated several years ago on an eFlite 'mCX. Second is to do so in extremely low light levels including in the dark,…


What can bees tell us about seeing and flying at night?

Posted on March 21, 2014 at 11:47am 3 Comments

(Image of Megalopta Genalis by Michael Pfaff, linked from Nautilus article)

How would you like your drone to use vision to hover, see obstacles, and otherwise navigate, but do so at night in the presence of very little light? Research on nocturnal insects will (in my opinion) give us ideas on how to make this possible.

A recent …


Hardware Startup Groups Unite!

Posted on August 9, 2012 at 5:43pm 1 Comment

Recently I started the DC Hardware Startup meetup as a complement to the many Web 2.0-ish entrepreneur meetups in the DC area and elsewhere, and then reached out to the organizers of similar meetups around North America. Two are about a year old- the …


11 gram Arduino-powered laser rangefinder

Posted on June 29, 2012 at 1:49pm 19 Comments

I was pleased to see a cool laser rangefinding project on Kickstarter- I hope this project gets fully funded (and I'm a backer). I've actually been experimenting myself with structured light and laser rangefinding using our ArduEye hardware and thought I'd share it…


New ArduEye using Stonyman image sensor chips

Posted on February 25, 2012 at 2:25pm 7 Comments

Awhile ago we (Centeye) started ArduEye, a project to implement an open source programmable vision sensor built around the Arduino platform. The first ArduEye version used a simple Tam image sensor chip and a plastic lens attached directly to the chip. After…


Comment Wall (4 comments)

At 11:36pm on November 14, 2008, Scott James said…
Thanks Geoffrey.
At 6:01pm on March 2, 2010, Bhargav Gajjar said…
Hi Geoffrey I have a special MAV how hard is it to program your optic flow gizmos ?
At 7:29pm on March 2, 2010, Geoffrey L. Barrows said…
Bhargav- Do you mean integrate them with your system or actually program the devices themselves?
At 11:58pm on September 10, 2012, Andrew Comport said…

Hi Geoffrey, yes we have had a project on bridge inspection using the Infotron drone. You can find a little more information about the project here:

Your work looks pretty interesting too... I will have to have a look over it when I find some free time...

Best, Andrew

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