So I got this 5.5W laser from aliexpress (OXlasers) rigged up to my 3D printer for some engraving/cutting.
Yesterday when trying to focus the laser I noticed a second dot next to the main dot.
What is the cause of this? and can it be fixed?
Thanks guys :)
So i've just got a 5.5W blue laser module for engraving/cutting.
It has 3 pins. V+, GND and PWM.
I thought that the laser would turn on/off depending on the voltage on the PWM pin.
But if I put 12V on V+/GND the laser turns on full blast.
How can I control the output power?