TRPd6H7q7

Hot-swappable simple shaft tester with NFC card function

Overview

First of all, I would like to thank Mr. @智晖君 - Hanwen Keyboard Open Source
https://oshwhub.com/pengzhihui/b11afae464c54a3e8d0f77e1f92dc7b7
and @liujigang for his open source project - Iron Man Water Drop Access Card (for the introduction of IC cards, this person The popular science here is very detailed, if you want to know more, you can go in and take a closer look)
https://oshwhub.com/liujigang/shuidimenjinka

Recently I have been paying attention to Mr. Zhihui Jun’s Hanwen keyboard, and then I accidentally saw it when I was checking the axis body. When I saw the axle tester, I thought it was quite interesting, so I came up with the idea of making one.

Just a while ago, I reproduced @liujigang's Iron Man NFC card. I was thinking about combining the axis tester with the NFC card. I could also use NFC to power the axis and control the LED light to turn on and off. No need to It is powered by batteries, so as long as you have a mobile phone with NFC function, you can play happily.

So I tried to make such a hot-swappable test shaft with NFC function. I used CATIA to draw a small shell. The style of the shell was drawn in the style of Zhihui Jun Hanwen's keyboard. The drawing was not good. Please don’t criticize me!

The upper cover and lower cover are fixed with three M2*5 cross countersunk head screws. The lower cover needs to be pre-pressed with three M2*4-3.5 knurled nuts in the three holes.

The video link of the finished product is attached below. Everyone is watching, thank you!

Finished video

https://www.bilibili.com/video/BV13d4y1k7qq/?share_source=copy_web&vd_source=6e8478cee4a1f23547235f65080e79f9

Design Files

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It is your responsibility to test the circuit yourself and determine its suitability for you. EEWorld will not be liable for direct, indirect, special, incidental, consequential or punitive damages arising from any cause or anything connected to any reference design used.

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Update:2025-06-24 12:26:21

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