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Step 6: Attach the Chip and New Antenna to the Inner Printed Frame

Picture of Attach the Chip and New Antenna to the Inner Printed Frame
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Take your chip and antenna, still with only one end soldered to the chip, and wind the antenna around the inner frame, until you get to a point where you can't make another loop around the frame. At that point, solder the other end of the magnet wire antenna to the other pad on the chip's board, and place any excess antenna back into the inner frame channel.

I would again test the whole assembly at a vending machine at this point, and then if it works, glue it all together and test once more. If it works at this point, you've made it through the hardest parts successfully. Congratulations.

You're now ready to mold and cast the ring.