hey anselm, great build on the under 60$ project! im attempting to make my first 445nm and had some my setup similar to yours, but im not sure if my driver assembly is appropriate, and safe for my diode,
i planed to have 2 X 18650's at 2200mah powering a Lm317 driver with only a 1 ohm resistor on it,,,
i have seen many builds that have capacitors and potentiometers, but im not sure if i need those,,, could you help me out? its greatly appreciated