Geoffrey L. Barrows's Blog – December 2011 Archive (3)

Wide field 4D optical flow odometry using Arduino and Stonyman image sensor


I've been working on a new version of our ArduEye using one of our "Stonyman" image sensor chips and decided to see if I can grab four dimensions of optical flow (X shift, Y shift, curl, and divergence) from a wide field of view. I wirebonded a Stonyman chip to a 1" square breakout board, and attached it to an Arduino Mega256 using a simple…


Added by Geoffrey L. Barrows on December 16, 2011 at 9:39am — 4 Comments

Make an optical flow sensor using an Arduino, CdS cells, and a shoebox!

This device is no match for an Randy's sensor, but it does (minimally) work. Think of this little project as a fun hack more than anything else. But with some tweaking and size reduction someone could probably implement an…


Added by Geoffrey L. Barrows on December 5, 2011 at 4:25pm — 4 Comments

RC micro helicopter hover (yaw and height) using millimeter thick vision camera

As part of Centeye's participation in the Harvard University Robobee project, we are trying to see just how small we can make a vision system that can control a small flying vehicle. For the Robobee project our weight budget will be on the order of 25 milligrams. The vision…


Added by Geoffrey L. Barrows on December 1, 2011 at 5:24pm — 8 Comments

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