Vibe Vault 4.1 Source Code

It took a while to get up, but the source code for Vibe Vault 4.1 is available here.  Vibe Vault is free software available under the terms of version 3 of the GPL  (license here).  Feel free to ask if you have questions on the code.

Building A Constant Current Driver For High-Power LEDs

Highly efficient, very powerful LEDs like the Cree XML2 are relatively inexpensive, and have lots of interesting uses.  According to Cree, they can “deliver[ ] an unprecedented 1198 lumens at 116 lumens-per-watt efficacy at 3 A,”1 with a maximum forward voltage somewhere around 3.15V.  To put this efficiency into perspective: incandescent lightbulbs have an efficiency […]

GNOME Annoyance: Alt + Tilde / Backtick (~ or `) Behavior

One of the first things I do when I set up a new Linux system with GNOME is configuring a hotkey combination for launching the terminal. For a long time, my go-to key combination has been “alt + `” (pressing the alt and tilde** keys at the same time). This is less straight-forward than you […]

Vibe Vault 4.1 Released

The new version of Vibe Vault is now available on Google Play. New features include: Two awesome, resizable widgets More robust searching capabilities (search by month and date in addition to year) The ability to change the downloads folder, and to scan the folder for existing shows and/or song) Improved notifications with an exit button […]

Excessive Amount of Spam from Bot(s) Using Outlook.com E-Mail Addresses

I recently changed andrewpearson.org from an entirely static site, to one that is dynamic and WordPress-powered (and therefore susceptible to bots that try to spam WordPress comments). Since then, I have received a tremendous amount of spam from bots providing outlook.com addresses: If you look at the left column above, you see that each post […]

Fedora Annoyance: Needs XX MB on the /boot filesystem

I originally wrote this post in January 2012 on the old version of my website. I am re-posting it here in case anyone might still find it useful. “This post is quite a bit different from my other posts thus far on this blog (which have been about Android programming), but I decided to include […]