Good Evening or Morning! This is the same as my previous design just with a bit different setup and a little larger arm. There are 4 upper LED light bar options all using the same lower for easy printing. The larger unit comes with a cog base as well. If you want to use this as a night stand lamp I recommend the 2 strip led with remote. The links are also below as well as a small build photo showing the soldering setup. 

So, this is a LED desktop or night stand lamp for the Amazon Echo Dot v2. I designed this in Fusion 360 with inspiration from the ongoing contest here on MyMiniFactory sponsored by Sindoh. I designed this in Fusion 360 with 3d printing in mind. It does require only very minimal support for the micro USB plug in on the back of the device. The tolerance should work well for most any minimally calibrated printer. The echo dot drops into the base and plugs in as normal. The LED light source could be just about anything you want but I opted for 3 options with a up to #2 12-SMD 5050 (available in white and blue) dome light as widely used in many vehicles shown in the pictures. This is a 12-volt light so it can be wired into any 12v adapter with an inline switch if desired. This design also includes a 6v (USB driven) light so those with soldering skills or more advanced users could modify the single USB cable to power both the Amazon Echo Dot and the single LED. In total this design offers 3 different light option and includes the corresponding arms for each type. The lower arm is the same for each upper arm used to make it easier to print.

Purpose: I made this since I use the Echo Dot here at my desk for music and/or useless information :). From time to time I need a bit of additional light to help illuminate my workspace for soldering or just seeing things a little more clearly- or it could be used as soft mood light as well.

More pictures to follow as well as assembly and final product. Easy print with very minimal support need only on the micro USB on the main housing. I recommend .15-layer height; 22% infill, 2 or 3 walls and 4-5 top and bottom layers. Please let me know if you have any questions. 

Materials Required:

PLA (or other material you prefer 100 grams); with the 12v light source I recommend PETG for the upper arm since they do produce a bit of heat as compared to the smaller output lights.

#1 LED of choice (able to fit in a @29mm x 22mm space) - revised arms for other LED options are included.

#2- M4 x 12 for the upper and lower arm joint

#2- M4 x 20mm for the body and lower arm joint

Wire for LED 250mm roughly in length need for the light housing (I used 28 - 30 gauge silicone wire from Amazon)

 Affiliate Links for Amazon Items:

LED 12v used- https://amzn.to/2GpCSaS

12v Adapter- https://amzn.to/2SjIZ7j

Metric Screws- https://amzn.to/2WMjZVE

Wire- https://amzn.to/2t1PzAX

PLA (white)- https://amzn.to/2TpjNJI

PLA (blue)- https://amzn.to/2t2urul

 Optional Light Sources for Corresponding Arms:

1. STL = Large Upper Arm CXA1304 Arrow M4 x 12 (up to 3 lights)

https://www.arrow.com/en/products/cxa1304-0000-000c00a40e7/cree?gclid=CjwKCAiAv9riBRANEiwA9Dqv1SaUkEEwU3nIxWN7i2K3VQreaZVF-fTn2djrowWNs1UdPh_z0bVlcRoCKWAQAvD_BwE

2. STL= Large Upper Arm Amazon LED Strips M4 x12 (cut to length)

 https://amzn.to/2MLDNDP

3. Dual Strip LED Upper Arm with remote

https://amzn.to/2BrkETa

Assembly Instructions:

Really straight forward process. I find it best to test fit all of the parts and pieces needed before assembly. I started by soldering the wires onto the LED. I used approximately 250mm of 28-gauge silicone insulated wire in contrasting colors, this leaves you enough to connect it to a wall adapter or create your own USB cable depending on how you wish to connect the light source and what light source is used. Once the LED wires are connected to the LED assembly feed the wires through the wire chase starting from the LED cavity through the arm and out the top side. Next you can then feed the wires from the upper arm through the lower arm by the same process staring at the forked end. Once the wires are complete you can mount the LED (can be press fit when using the 12v one linked be careful not to pinch your wires but there should be ample clearance under the light). Once the wire is complete and you are happy with the fit and mounting of the LED you can assemble or join the upper arm and lower arm by using the 2- M4 x 12 mm bolts, one from each side. Once the two arms are joined you can now install the Echo Dot into the body housing. It’s an easier fit to do that before connecting the arm assembly to the body housing. Once you have Echo Dot installed in the housing go ahead and mount the arm assembly to the body using 2- M4 x 20 mm bolts, again one from each side. Mine threaded easily but if you have any issues, I recommend starting the screw in the threads prior to joining the arms. Once the final arm assembly is complete you can make the proper electrical connections to the LED and you should be ready to go. Hope you enjoy- if you have any questions please let me know.