USB Power 101

Written by Vance Fitzgerald. Posted in Tech

  • Any USB cable (2.0 or 1.0) is composed of four wires—two for data and two for electricity.
  • The power is delivered across the outer two pins—a +5-volt wire and a ground.
  • USB connectors are configured to provide 100 milliamps of current through these pins when in “low-power” mode or 500 milliamps in “high-power” mode.
  • Although some USB connectors will provide maximum power without any questions asked, most won’t unless the USB device requests high power using the proper protocols.
  • Most USB hacks to power other devices aren’t that sophisticated, and are therefore limited to about 100-200 milliamps of current.
WARNING: An improper USB mod that results in a short circuit can fry your USB port or even your motherboard. Make absolutely sure that all wires are spliced correctly and that any exposed copper is covered with electrical tape or heat-shrink tubing.

WordPress vs. Joomla

Written by Vance Fitzgerald. Posted in Tech

WordPress vs. Joomla … I have screwed with Joomla for about a decade now, and tinkered with WordPress sporadically over that same timeframe. I thought that one would absorb enough of the other’s functionality and eventually trump the other at some point, but both continue to endure. This post represents my first look back at WordPress in quite some time – and there is little question why it has thrived. It is dirt simple and very intuitive. I always felt like Joomla had more upside and creative custom modules and plug-ins, but I am not convinced anymore. One thing that I like immediately after looking through WP quickly – is the ease of access to the css and other files from the admin area. Joomla followers know that the same access is available in the Joomla admin area too – but the WordPress work flow for a poder (coder poser) is more intuitive. I really just needed a topic for this first post – so the jury is still out on which way I may sway tomorrow. I love Joomla, and I suspect that I will find that there is clear reason for the existence of each. If I just wanted to blog though – there is little question that I would stick with WordPress.
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