RFID / NFC Smart Ring - Size 10 - NTAG213 [Discontinued] _MAKE_3DP Works with 12V amplifier systems

Works with 12V amplifier systems

so we broke out the X/Y pins so you can connect them up to something like the STMPE610 which is a very classy touchscreen controller

can seamlessly run together on Teensy LC and Teensy 3

but the Electrical Engineer

Unused GPIO pins still accessible via unpopulated extension header

RFID / NFC Smart Ring - Size 10 - NTAG213 [Discontinued] _MAKE_3DP Works with 12V amplifier systemsWhat did Lord Sauron, when forging the One Ring in the fires of Mount Doom forget to include in his all powerful ring? What did he forget to leave out of the ring impervious even to dragon fire, designed to rule over all free peoples of Middle Earth in perpetuity a ring destined to be the One Ring to Rule Them All, to tempt its wearer with the promise of infinite power? Thats easy it could have used an embedded RFID NFC transponder! NFC (near field