Most of you know the way an NFC tag works. The reader creates an RF discipline that has sufficient vitality to energy the electronics within the tag; when the tag wakes up, two-way communication ensues. We’re accustomed to clean tags that may be reprogrammed, and units just like the Flipper Zero that may emulate a tag. In between these two is [MCUer]’s power-free tag emulator, a board which makes use of NFC receiver {hardware} to energy a small microcontroller that may run emulation code.
The microcontroller in query is the low-power CW32L010 from Wuhan Xinyuan Semiconductor, a Chinese language half with an ARM Cortex M0+ on board. Sadly, that’s the place the fascinating information ends, as a result of all we are able to glean from the GitHub repository is a PCB structure. Not even a circuit diagram, which we hope is an unintended omission moderately than deliberate. It does, nevertheless, lend itself to the fostering of concepts, as a result of if this designer can’t furnish a schematic, then maybe you’ll be able to. It’s not tough to make an NFC receiver, so maybe you’ll be able to hook one as much as a microcontroller and be the one who shares the circuit.
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