help laser upgrade

[Zax]

I haven't looked at the code but it could also consider 11 as >7 and assign 111 to the mask, it probably doesn't but you should still use a valid entry and understand how the bit masking works 

[Hokuro]

I set 3 as you suggested. I didn't invent 11, I found it on a discussion, a wrong discussion ...
I solved the switch problem , I hope.
twisted wires and rc filters did not work.
I mounted a good shielded cable and works great, even without gnd on the shield.
now I have other problem:
the laser dot (or laser rectangle) is double
any suggestions?

[Zax]

This is often an indication of the diode failing but may also be something simple like the lens isn't flat (parallel to the diode) or needs cleaning.

[Hokuro]

I hope the second. Tomorrow disassemble it.

[Hokuro]

I disassembled the laser, I cleaned the lens but no change of the laser beam.
then I removed the lens again and cleaned the diode. now it works perfectly.
I don't understand how the diode got dirty and not the lens; the magic of Chinese things

[ggallant571]

I cannot tell a lie. I put that spot of dirt on your lens just to test your persistence. Not going to tell you what I did to the ball bearings.

[Hokuro]

  if you did all that way you could stop for a beer