Windows Hello

## Product link:
* Suitable Windows Hello camera link (25 free shipping, seems to be the **cheapest** you can find): [Taobao] https://m.tb.cn/h.fHvYcNS?tk =8Jzf2O2ZBPE "Windowshello camera module associated with Dell 0jcxg0"
* If you only use the infrared camera, you do not need a USB Hub. For the purchase link of `HS8826A`, you can refer to this company. **Free shipping for single items**: [Taobao] https://m.tb .cn/h.fHv1lfE?tk=0K9Z2O2bzyk "Original and authentic HS8836 USB expander IC HS8836A SOP-16 card reader IC original and authentic"
## Option 1:
Choose 1.0mm thickness for the base plate, top plate, and middle frame. The columns use `M2x3 knurled copper posts`, and the screws use `M2x3 countersunk head screws`. Place **three-piece middle frame** between the bottom plate and the top plate, with a thickness of 3mm. The thickness is slightly less than the typec height (within 0.2mm), and the screws can be tightened.
## Option 2:
The thickness of the bottom plate and top plate is 1.0mm, the thickness of the middle frame is 1.6mm, the studs use `M2x3 knurled copper posts`, and the screws use `M2x3 countersunk head screws` and `M2x4 countersunk head screws`. Two middle frames are placed between the bottom plate and the top plate, with a thickness of 3.2mm. The thickness seems to be equal to the typec height. Be careful to install the M2x3 screws first and then the M2x4 screws, otherwise the M2x3 screws may not be able to reach the copper pillar.
## Notes
* Make a hole on the base plate and fill it with tin for soldering. It is recommended that the hole should be above 1.0mm. If it is smaller, it will be difficult to solder. You can make it a little larger.
* Do not tighten the screws tightly as they may slip. Just tighten them properly.
* The 0R resistor between the infrared and the camera's 3v3 power supply can be short-circuited directly with tin. Currently, there is no short-circuit and no problem has been found.