Geoffrey L. Barrows
  • Male
  • Washington, DC
  • United States
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Geoffrey L. Barrows's Page

Latest Activity

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
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
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
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
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
microuav commented on Geoffrey L. Barrows's blog post Visually stabilizing a Crazyflie, including in the dark
"Very Nice like all your previous work. Thank you for mention our DelFly explorer stereo vision system. Maybe we could work together on a night version of the stereo system? You make the light weight hardware and we include the algorithms and let it…"
Mar 29
Geoffrey L. Barrows commented on Geoffrey L. Barrows's blog post Visually stabilizing a Crazyflie, including in the dark
"@Greg- Chris and I have been discussing something like this for some time now. The chips on this demo are experimental and a bit different from other chips we have sold in the past. But it would be possible to make something based on the Stonyman…"
Mar 29
Shah Selbe commented on Geoffrey L. Barrows's blog post Visually stabilizing a Crazyflie, including in the dark
"Very cool job here!"
Mar 28

Profile Information

About Me:
Founder of Centeye, Inc.
www.centeye.com
www.embeddedeye.com
Please tell us a bit about your UAV interest
Visual navigation for MAVs, embedded vision, bio-inspired signal processing
Hometown:
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,…

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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 …

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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 …

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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…

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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…

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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:

http://www.i3s.unice.fr/~comport/research/visual-servoing-of-drones


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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