Small update (no pics this time), I wired up the LEDs in the front reflector and temporarily attached it to my bike, it still needs some proper wire attached to it (having a little difficulty finding just the right type) and also waterproofing.
But holy smokes is it bright! one minor annoyance is that the reflector can be angled up/down but the notches are just a tad off for my liking, I can either point it slightly down which won't dazzle anyone but it doesn't fair too well along unlit roads & cyclepaths, or I can point it directly forwards which works extremely well along unlit roads & cyclepaths, I can see *everything* in front of me (reflective roadsigns glow suprisingly bright even from a distance) but it also means anyone in it's beam can be dazzled.
Could I get into any trouble by having it point directly forward?
I also found I had to turn the voltage down from 3.4v to 3.15v as the LEDs were getting quite warm and a couple showed signs of colour shifting to blue as 3.4v is pushing them to their limits, also the DC-DC regulator gets a little warm so I wouldn't power more than 30 LEDs from it, though 17 really is enough for a front light
