Laser build for reprap 3D printer

Hi all,

After wandering a while over the internet to find a laser to modify a 3d printer, I finally arrived on this forum.

As I just told, I try to add a laser engraver/cutter to my prusa I3 3d printer.

I need to control it with a 12v signal (that is the voltage sent by the board).

All I have found on the internet are ttl blue lasers that only accept 5v max for the signal.

I have benn thinking about adding a voltage regulator to reduce the signal as a LM7805, but I don't even know if it would work.

The other solution would be to build my own driver, but I don't really have the knowledge to do so.

If someone had any comments/ideas and advice for a cheap but reliable solution, it would be great.

Thanks in advance