3D Printed Desk Lamp with COB LEDS and Adjustable Brightness

thingiverse

This is a remix of wepollock's "Large Articulated Desk Lamp LED Cob" A detailed build video discussing the electronics can be found at: https://www.youtube.com/watch?v=KkBDHNBvAhE I made several changes to the original design: * The lamp was split into two pieces, as one piece was too large for my printer. A lip was added to help hold them together, but I recommend adding some superglue as well. * An end cap was added for the lamp to keep from looking directly at the COB fixture. * The baseplate was modified with mounting bosses for M2.5 screws and M2.5 heat-set inserts. This allows you to print it in a more rigid filament (I used PETG) and attach the baseplate to the base using screws instead of having to print the baseplate in TPU. Note that I did not drill holes into the base itself, only the baseplate -- fit by hand and use a 1/8" drill bit to finalize. * The base was modified to accommodate my custom adjustable constant-current switching power supply. This lets you dim the light. Details on my constant-current supply can be found in the referenced video. This requires some electronics knowledge to complete. As an alternative, you could remix the switchcover to accommodate your own custom switch, make a place to put a power-dropping resistor if you decide to go the resistor approach, etc. "v2" of the base has several changes discussed in the video, such as making the junction box slightly bigger and accommodating for threadserts. I have not yet printed v2 so consider it untested. I experienced some difficulty with the segments being loose and the lamp not being rigid enough. I copied MariusHomberger's Flexi segment into this design for reference. I ended up wrapping a bit of blue painter's tape around the inside of each joint to stiffen them. Print settings vary by piece. Make sure to print the lamp fixture itself with as little infill as practical to reduce weight. I went with 10% cubic infill. If you choose my base that accommodates the power supply, then you'll need supports around the power supply box. Used some brim on the base, as my first base suffered a layer shift and I was unsure if it was due to some lifting. Many thanks to Wepollock, MariusHomberger, and BigCliveDotCom for their contributions.