SCP 4-in-1 NFC Card

Item #: O5_NFC_Card
Item Class: EXPLAINED
Special Containment Procedures: At first glance, O5_NFC_Card does not pose an immediate danger. Use of O5_NFC_Card must comply with the CC BY-SA 3.0 license.
Description:
O5_NFC_Card is a standard card-sized printed circuit board measuring 85.6mm in length, 53.98mm in width, and 1mm in substrate thickness. Its dimensions are the same as a public transport card, and its appearance is similar to █████.
It contains an internal coil antenna with good sensitivity to electromagnetic waves at a frequency of 13.56MHz.
Ten solder pads are provided on the surface.
 
 
Experiment Record:
    Date: ████████
    Object: O5_NFC_Card
    Experimenter: ███
 
    Description: Apply low-temperature solder paste with a nominal melting point of 138°C to the pads.
               Attach 4 NFC chips, 4 white 0603 package LEDs, 1 0603 package 100Ω resistor, and 1 4-position toggle switch to the corresponding locations.
               Set a hot air gun to 250°C and heat the printed circuit board until the solder paste is completely melted.
 
    Results: The O5_NFC_Card was tested using a mobile phone NFC sensor; the sensitivity was good.
               The 4-position toggle switch was used to switch the connection between the antenna and different NFC chips; it functioned normally.
 
    Appendix: The BOM is automatically generated and cannot be ordered directly.
 
              The PCB thickness is 1mm (other thicknesses will cause the PCB edge to misalign with the toggle switch).
 
               Only white LEDs were tested; other colors were not tested.
               Polarity of LEDs and NFC chips does not need to be distinguished.
 
               The 4-position toggle switch needs to be mounted upside down.
               The reference shop is Dongguan Yuetai Electronics MSKT-14C01 on Taobao.
 
               The NFC chip is 5*8mm in size and needs to be cut and trimmed with scissors. A reference shop is Taobao's Dexin IoT access
               card store. It can use either UID or CUID chips (please refer to the relevant documentation for the differences).
               The 216 chip is an NFC tag chip and is incompatible with the former (to be verified).
 
               UV glue can be used to protect the components; be careful not to miss it.
               The ID number on the back of the toggle switch can be modified; "JLCJLCJLCJLC" has been added to the file. Remember to select the specified customer editing position or modify the font file yourself.                Other references can be found
               at https://oshwhub.com/mazhiliang/nfc_card_4in1                . The appearance design references cv780337; thanks to Tangjia. Remember to add three spoons.                The circuit part references nfc_card_4in1; thanks to mazhiliang.