T4fhn

Chongqing Transportation NFC Card

Overview

Thank you in advance for your open source:

https://oshwhub.com/mazhiliang/nfc_card_4in1

https://oshwhub.com/ljylovewyn/xi-an-di-tie-NFCming-pian

I followed the method in the second link to draw a simple route diagram of Chongqing Rail Transit, and made slight changes to the PCB in the first link.

This PCB is 1 CUID + 3 NTAG213 (the cost is about 0.8 + 0.3*3 yuan). The CUID I bought is 5*8mm, and the NTAG213 is 3*5mm, so I optimized the pad size of NTAG213 in the first link. .

If you need other combinations, just copy the pads of corresponding sizes.

The 4-way toggle switch switches different chips. When a certain chip is used, the corresponding LED will light up. For other functions, just look at the first link. I also made a detailed NFC usage instructions and some QR codes for expanded functions. You can read it by scanning the code at the bottom of the PCB file in the editor !

Finally, a video of using it to enter and exit the campus access control is attached:)

Design Files

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