ARToolkit Plus recipe for Gumstix Verdex
After much messing around, I was able to create a surprisingly compact bitbake recipe for compiling ARToolkit Plus in OpenEmbedded. Since qmake and qt3-embedded are already well-supported packages, it...
View ArticleFixing AP handover on the Gumstix Verdex + wifi module
I was using my Gumstix Verdex to control an iRobot Create with the ever handy Element Sticky board when I encountered a serious problem. The network setup around here has a ton of access points with...
View ArticleRemoving packages + dependencies from Synaptic in Ubuntu
So, a complaint that has come up a number of times over the years is the fact that you can open up Synaptic package manager, browse through the history, find a package you installed and all of the...
View ArticleInstalling Ubuntu 9.10 on the BeagleBoard
Since there don’t appear to be any clear step-by-step instructions for doing this, I figured I would make a nice instructional post for people that don’t spend their whole day hacking embedded...
View ArticleCreating Amazon AMI images for ROS
Simulating large numbers of robots can be a pain. I’ve decided to experiment with building Amazon Machine Instances of ROS to enable me, and anyone else, to quickly launch any number of pre-installed...
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Making a cheap electrical wire caddy
For many hobbyists, having a bit of wire around is a must. But outside of the lab, I’ve always had trouble finding useful ways to store wire in my kits. Finally, I got frustrated and lightly modded a...
View ArticleFixing an SQLite version mismatch between Subversion and PHP5
If you are running an Apache2 server and mod_dav_svn, and you upgrade to the latest version of subversion, you might suddenly lose the ability to access newly created respositories, but still be able...
View ArticleEnabling infrastructure wifi on the ARDrone with DHCP
There are a number of different articles on “patching” the AR Drone to connect to infrastructure. I’m going to talk a little about the technical details of what is going on, based on my own experience....
View ArticleFixing linking errors caused by MacPorts’ incompatible binaries
I was recently compiling SFML, to see whether it would be a viable replacement for SDL in Plinth, when I came across the following error: ld: warning: in /opt/local/lib/libfreetype.dylib, file was...
View ArticleFixing Mac OS X framework errors
Due to a series of unfortunate choices, I accidentally convinced OS X 10.6.8 that it was OS X 10.7. I was mostly able to revert the damage, but sometimes Apple’s Software Update utility will decide to...
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