Hey Everyone, I recently decided to build a saber from scratch as my first one but have come across some unfamiliar concepts. I am not very familiar with wiring and as a result I don't feel comfortable ordering the parts until I resolve this issue. I am planning on using a Nano Biscotte V4, a "Red/Green/Royal Blue Cree XP-E2 CopperNova" LED, and a "Li-Ion 18650 3.7V" Battery. Additionally I see something called a power extender while looking at the NBv4 manual, but am not sure what purpose it is supposed to serve. My main issue is that I cannot figure out what types of resistors I would need in order to properly wire the build so that I do not short anything out. Any help on this matter would be greatly appreciated.