nfc campus card-hust version

Principle of NFC
NFC always involves an initiator and a target: the initiator (transmitter) actively generates an RF field that can power a passive target (Tag) using electromagnetic induction between two loop antennas: the
transmitter and the tag's antenna are coupled by electromagnetic fields, the system is best thought of as an air-core transformer, where the reader acts as the primary winding and the tag acts as the secondary winding: alternating current passing through the primary coil (emitter) induces a magnetic field in the air, which in the secondary Current induced in the coil (Tag). The tag can power itself using current from the field: in this case, no battery is needed to access it, whether in read or write mode. The NFC tag chip draws all the necessary power to operate from the magnetic field generated by the reader through its loop antenna.
Materials required
NFC chip 1kb
XQFN-8
NT3H1101W0FHKH
1
blue indicator light
0805
 
1
47Ω resistor
0603
 
1
220 nF capacitor
0603
 
1
printed circuit board
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1
 
The original project was used on a mobile phone with nfc function, after testing it was found Some sensor door locks can also perform functions.
I have to say that the nfc chip is really difficult to solder. I tried using an air gun several times but it didn’t work. In the end, I had to apply solder paste.
 
The front of this project has the school emblem of Huake, 8 blue LED lights are designed around it, and the campus map
Huster code is on the back. : You can do more than that!