The Piclop laser scanner (http://www.thingiverse.com/thing:754003) is very sensitive to changes in the light levels on the abject that you scan and it can cause light and dark lines on on the end result. I decided to make some spot lights to try and counter this problem. The lights can fit on the top or the the bottom of the clip. The lights run through the ULN2008 chip and can dimmed to to desired level. It does mean that there are changes to software and I did the changes to FreeLSS 1.2 The current version is 1.4 already and I need to find a way to update the software quicker to accommodate the lights. Here is the hardware in mean time ..... Update: I wrote my changes into freelss ver 1.4. Still need to do proper test but thus far it seems fine. Update: Diffusers for lights: http://www.thingiverse.com/thing:810178Print two of each Item. I covered the inside of the cone with aluminium foil. It takes 2 x 10mm bright LEDs If you did build a Atlas scanner/PiClop scanner you will know how the the lasers run through the ULN2008 chip. The lights connect in exactly the same way (the 2 wires from the Pi goes into the chip and the wires that exit goes to the negative side of the LED). Just use 2 of the spare pins on the chip and I placed a 100ohm resistor on each of the positive wires that comes from the 5v input.