I am going to design a fairly simple binary LED wrist watch. For a cool feature and a good learning experience I want it to have wireless charging capabilities so I purchased this wireless charging set from adafruit link
Unfortunately this set comes with no documentation and I can't even find who made it. I'm pretty new to wireless charging so I'm wondering what sort of shielding will I need to protect the other electronics on my board? I am thinking I'll put the coil on the bottom of the PCB and everything else on top. Will something as simple as a layer of aluminum foil do the trick?
I've done some research but everything I've read so far is pretty complex (and $$) for what I'd like to do for such a simple project.