Made for my own Youlian. I didn’t see the mechanical dimensions of the Kaiku 84-key line separation board online, so I had to measure and map it myself. It is as shown in the picture, there is a slight deviation, but it can basically be used. Other Bluetooth keyboards can copy the engineering modifications.
I couldn't find such a thin switch, so I chose a horizontal one to use as a vertical stick. The 1.25 socket is also too fragile, so you need to be careful.
The two charging indicators cannot be seen without the transparent case.
The fixing screws are M1.7
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