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 John C.'s blog post Parrot/Pix4D announce 2017 Climate Innovation Grant
"Very cool! I wonder if this area would benefit from yet smaller drones that can fly way up into the branches and see the structures from the inside."
Dec 9, 2016
Geoffrey L. Barrows commented on Chris Anderson's blog post Visual obstacle avoidance with Centeye and Crazyflie
"Chris, Everyone- Thank You for posting this. We are deliberately developing this technology for both civil and military use, and so I do envision this hardware finding it's way into, at least, commercial nano drones. The hardware can be made…"
Dec 1, 2016
Geoffrey L. Barrows commented on Colin Snow's blog post Why I Think the Prosumer Drone Will Never Die
"An inevitable implication of Zipf's Law is that if there is a market for a $100 version of a product, and a market for a $10000 version of a product, then there is certainly a market for a $1000 version as well. Also, if the market size…"
Oct 28, 2016
Geoffrey L. Barrows commented on Simon D. Levy's blog post Hackflight Teensycopter
"@Patrick: Good question. We plan to reboot ArduEye sometime "soon". It was a mistake to stop it. As for the higher performance sensors for nano drones, we have a design that works great for internal development purposes.…"
Oct 11, 2016
Geoffrey L. Barrows commented on Simon D. Levy's blog post Hackflight Teensycopter
"Nice work Simon! I can appreciate your desire to have more control over the controller itself. We are happy with the Crazyflie, but that required us to build a separate controller board that generates all the high level control information.…"
Oct 9, 2016
Geoffrey L. Barrows commented on Chris Anderson's blog post RocketSpace/AT&T report on the future of drones
"Nice article! I pretty much agree with all of them, but some will occur sooner than others. I would like to add a few more predictions, based on observing the "micro" UAV industry since I first got involved in 1996: 11) Drones will fly…"
Oct 9, 2016
Patrick Poirier commented on Geoffrey L. Barrows's blog post 360 degree stereo vision and obstacle avoidance on a Crazyflie nano quadrotor
"Hello Goeffrey, Have you made progress on this project ? Can we expect a commercial product soon ? Best Regards"
Jul 9, 2016
Laser Developer commented on Geoffrey L. Barrows's blog post 11 gram Arduino-powered laser rangefinder
"It's a joke about the 2N2222 (better known as the 2N-quad 2) as being one of the most common transistors on the market and in the professional electronics world if you use this type of "common part" then you are clearly an amateur.…"
Apr 28, 2016

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

360 degree stereo vision and obstacle avoidance on a Crazyflie nano quadrotor

Posted on November 19, 2015 at 4:28pm 19 Comments

(More info and full post here)

I've been experimenting with putting 360 degree vision, including stereo vision, onto a Crazyflie nano quadrotor to assist with flight in near-Earth and indoor environments. Four stereo boards, each holding two image sensor chips and lenses, together see in all directions except up and down. We developed the image sensor chips…


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 22 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…


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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