Schazamp finalized his USB power supply. It features the MCP1824S linear voltage regulator, a PTC resettable fuse, and an ON-NONE-ON SPDT switch. You can chose the output from either the 5v USB line or the voltage regulator.
Via the forum.
Leave a comment
Why not an automatic switch? Like on the Arduino.
There are also some good 3 pin switching regulators that are drop in replacements for linears.