Thanks MarkT,
- In the interests of working out a short term solution (ie butchering an existing board), I'm guessing I could cut the Vi and Vo pins of the regulator and short the connection, as well as cutting the line to the 3.3V regulator (I don't need 3.3V) and severing the line to the LED? I'm working on a Freetronics Eleven, schematic: http://picpaste.com/eleven-schematic.jpg
- I'm planning on using a 9V Li ion battery source as some additional circuitry requires 9V. Will a simple voltage divider (with mega-ohm resistors) provide the best (ie most efficient) way of delivering 5V to the Arduino board?
- Is there any way to disable the USB-serial chip after I've uploaded my sketch? I'm guessing this pulls at least a few mA, and maybe there isn't any point removing the regulator and power LED if this is still drawing sizeable current.
Cheers in advance!