NickStallman.net Where the Cheater prowls

Well I'm designing a expansion board for my NGW100.

It will have Audio (CS4202), PS/2 ports with the required level shifters, VGA (ADV7125), a 128x64 monochrome LCD and some interesting power circuitry.

Whats interesting about the power circuitry is it will be able to take half a dozen different power sources to power the NGW100.
They include USB power, Solar, Wall wart and power from a lead acid battery.
It will be monitored by a ATmega32 (which also runs the LCD) and the NGW100 will be able to inquire about voltages and battery capacity. :)

This is simply a wire from the hole next to the USB port which supplies 5v to the positive hole next to the power supply which feeds it.

The Diode prevents the USB port from being fried if you plug a wall wart in.
You can see my crudely drawn marker telling me the polarity of the diode under the shrink wrap.

Well I got a replacement NGW100 to replace the one I borked.
That was a expensive mistake. :(

I've got it successfully modded so it can now be USB powered. :)
There is a convenient hole next to the USB port which is the USB's 5v rail.
You just need to run a wire from there to the positive pin of the power supply, next to the double set of IO pins.

I put a diode in place as well so I can swap power supplies on the fly and 12v cant go and fry the USB port. ;)
I also put some heatshrink over it to make it look professional and reduce the chances of shorts.

Well I got my NGW100 last night. :D

If you dont know what it is, its basically a tiny board which runs Linux.
It features two network ports, SD slot, serial pot and a slave USB port and its designed to be a simple yet powerful Network GateWay (NGW).