张小哥

NFC: supports meal cards, bank cards, etc.

Overview

Referring to the design of TD111111, a DIP switch is added, which can hold three cards, and then two circuit boards are made, fastened together and injected with silicone rubber using a thick needle. Wait for it to solidify overnight before use. This is quite strong and waterproof. , the three cards are very convenient to use. I put my meal card and bank card in them and use them all the time. To remove the card, you can use a flashlight to determine its position, and then use a soldering iron to remove it. ps intel stickers are pretty good

Design Files

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Update:2025-05-08 12:37:41

I don't know much about the commonly used domestic device manufacturers.
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