background information:

I have a 80w **laser cutter** and i want to cut shapes and engrave pictures with it at the same time. So lets say 100% is 80W, then something like 4% is ligtly burned and 5% is already blackned. At 255 steps over the complete range, that 1% only has 2,55 steps. So to get more shades of gray i would like to have more steps. If I am not mistaken the hardware (lpc1769) can handle this.

**If someone could help me out here by telling if its possible and maybe how**, you would make my day and you can have my everlasting gratitude :)