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I would like to get the most life out of the diode, so I may take out the pot and leave the two parallel 10ohm resistors to run 250ma if it should still burn

So if I currently have two 10ohm resistors in parallel giving me 5 ohms, divided by 1.25 which gives me 250ma... The potentiometer would raise or lower the current? 1.25 is regulated voltage out of the lm317? Should I switch the resistors to get 3.2 ohms? Does anyone know the minimal current...

how much current should I be using for the lpc826?

is 660nm different from the 658? or is it just rounded up?

This is my first post on LPF and my first laser in general, so sorry if I sound like a noob. I decided yesterday i wanted to build a burning laser after i came across one on one of my electronic hack forums(too much free time). So i did a decent amount of searching on what I would need to do...