This weekend I plan to put solder to copper and finish off my homemade white LED headlight. I've been stalled on it for a few months now, but I recently got interested in it again.

A bit of further experimentation and a happy accidental discovery and I finalised the circuit last week. I've been shining it around the back yard on the 'breadboard' and for the size of package it's going to be, the light output is impressive. I believe the battery life will be equally impressive.

I made up a couple of printed circuit boards last night from a kit I bought at the local electronics store, and they came out beautifully. I have an APX film cannister with the mount from my old Cateye screwed to it to take the LEDs and circuits and the batteries will go inside the handlebar. It should be a sweet little unit.

For some (not very clear) photos of the circuit still on the breadboard see here and here. The final circuit boards are sitting on the small notepad to the right of the light.