Instructables
I've always wanted one of those flashflight discs; you know, the ones that light up so you can play at night. unfortunately, I really don't like the weighting of them; I can't for the life of me throw a flick with it, and they're a bit expensive. so I decided that I'd make an attachment for my current discraft ultra star that does a similar thing. it's removable, and the only modification you make to the disc is a small hole, which shouldn't make any difference to the aerodynamics. (you could glue a nut to the bottom of the disc, but it wouldn't be as secure.)

Step 1: Get stuff and things

Picture of get stuff and things
you'll need:

a frisbee
a soldering iron
a CR2016 (or similar) coin cell
circular perfboard
white LEDs
a small bolt with corresponding nut
solder
propane torch
plastic (not pictured)
hot glue (not pictured)
hacksaw (not pictured)

Step 3: Drill hole in board

Picture of drill hole in board
this step probably should've preceded the soldering, but regardless, you need a hole in the board that's roughly the same diameter as the bolt. make it as centered as possible (I didn't do very good at this part).

Step 5: Solder bolt into the board

now that the bolt is coated in solder, we can use the soldering iron to connect it to the board. first, solder as much of the bolt as you can to the contacts on the board to lock it in place. after that, solder all the positive leads from the LEDs to the bolt head.
 
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