Kossel LED Lights

These LED's are 12V SMD 5730 size and with the two rows of them throw significant light on the print bed without adding any mass to the Kossel hot end.

12V LED's are the obvious choice since you don't want to draw any more 5V power from either the MEGA's USB buss or the MEGA's skimpy 5V regulator. Stick with 12V so it will run off the 20A or 30A 12V supply for your printer.

The slot the LED strips fit into will hold any LED strip that is 10mm wide, but if they aren't 5730's they will emit less light. The strip LED's come with self adhesive backing but I don't peel the backing off, just slide them in the slots, wire them up, good to go.

Watch the polarity of the LEDs when soldering them. I join two banks of them together (one at the base of the X and Y towers; you probably don't want it on the Z tower since it would shine into your eyes).

Power can be right at the 12V input screw terminals on the RAMPS 1.4 PCB.

Or you can wire them up to the FAN terminals - D9 - on the RA