Open Source Software Conference October 2009

I'm presenting two classes at the Utah Open Source Conference this year. I've had some ties to that group (and other open-source projects) for quite some time now. The cost is quite low, and as far as training goes, there are some great presentations on everything from virtual machines to advanced image editing with GIMP.

If you can make it, I highly recommend it. I'll be talking about securing your data over the internet with OpenVPN and filtering your home or office web traffic with Dansguardian and transparent proxying. There are some big names in the open source community presenting as well, including one guy who literally wrote the book on open-source telephony.

Nice to see more solid data on LED efficacy

Interesting blog post on one of the industry publication websites. They have some nice data on efficacy (power to light conversion efficiency) of several white LEDs used in light fixtures. Remember the efficiency numbers stated don't include power loss in the power conversion circuitry (in fluorescents, this circuitry is called the ballast) nor the losses due to the optical system (lenses, reflectors, etc). It's interesting anyway.