hi I am new to this topic. And I bought a laser module to make my own. neje e80 And when I used its tester board to test it, it was completely normal،But when I used the tester board a few days later, the light it produced was parallel, not a spot. It was hot, but not a spot. I wanted to know if there was a setting on the tester board that I messed up. I would really appreciate your help
We moved this to its own thread and to the NEJE part of the Hardware section. This should assist in the feedback. 