Adding An LED: A Galaxy's Edge Droid Depot R2 Dome Mod

How I modified my R2 unit from the Droid Depot at Galaxy's Edge to give it an extra LED in its dome. This video shows the entire process from, "How could I..." to "It works!". I suspect the electronics in other domes will differ from what is in the R2 dome, but there should be enough information here to help other dome owners figure out similar mods.

The key points (to me):
- Rather than attempt to solder to the existing PCBs, it is much easier to splice into the wire that connects the LEDs to the dome connector.
- No more than 20mA of current should be sunk on any of the three LED wires in the dome. Adjust resistor values of existing LEDs and add new resistors as appropriate.
- When changing hot glue sticks, go through at least one full stick to clear out any previous glue stick color before using your new glue stick color.

Here is my flickr album containing the photos I took of my R2 dome: https://www.flickr.com/photos/ruthsar...

Here is a link to my previous video where I modded a BB dome to have an extra LED:    • Star Wars Galaxy's Edge BB Droid LED ...  

If you perform a similar mod yourself, please share your experience (and maybe some pictures or videos) in the comments.

0:00 Initial Investigation
5:44 Theorycrafting a Mod
18:49 The Plan Takes Shape
21:12 Modifying the Electronics
27:41 An Exercise in Unsafe Drilling Techniques
31:10 Test Fit
32:54 Reinstalling the Electronics
37:17 First Test of the Completed Mod
38:07 The Finished Mod and Final Thoughts