To make the pocket square patch, cut out a small piece of fabric (I cut 4.5"x3.5" to give myself some extra room). Next, sew the plus side of each of the 4 LilyPad LEDs to an individual petal (PIN) on the LilyPad. I used pins 5, 6, 9, and 10. Lastly, using conductive thread, sew all the minus sides of the LilyPad LEDs together and connect to pin 11 (we will declare pin 11 ground using the Arduino software).
Good work! Now you're done with the construction!
I designed my own XBee Breakout Boards that easily plug into the male header on the LilyPad. You could use the Lilypad XBee Breakout
and sew the boards back to back.