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xdavidhulast Friday at 2:17 PM0 repliesview on HN

Ollee does that by replacing the original PCB. In this project the movement is kept original.

I recall the blog n-o-d-e did successfully put an NFC chip inside while also retaining the default PCB, so there is at least some free space in the case...

https://n-o-d-e.net/casio.html (0:56)