Anyone tried this laser?

See my build:

The laser works fine. however it works via off and on.
It does not appear to be PWM compatible (no “shades of grey”).
You will need to use a device like a MOSFET to turn it on and off (A relay would be too slow).
For basic lettering, and engraving it works great.
But if you were going to try and do “pictures”, I wouldn’t recommend it.