My long‑serving Raspberry Pi 4B has finally met its “successor” — the compact Intel NUC. From ARM to x86, from a TF card to an SSD, this seemingly simple hardware upgrade has brought a qualitative leap to my tinkering experience.

As we all know, once keycaps get greasy and shiny (“oiled”), it’s almost impossible to restore them by simply wiping. I once tried sanding the keycaps, but not only did it make things worse, the plastic debris also fell into the gaps between the keys. (You can see my sanded Shift and Space keys in the photo — they look terrible.)

While some say you can go to an Apple Store to get them replaced¹, it’s said they only allow a few keycaps to be replaced each time. For someone like me whose entire keyboard is shiny, DIY replacement is clearly the more practical option.

I’m writing this blog post because I found it incredibly difficult to locate a complete guide on how to replace MacBook Pro M1 keycaps. Most of the videos online² only show how to remove regular letter and number keys — they deliberately skip over the longer keys like Space, Caps Lock, ESC, and the arrow keys. These keys have different internal structures and require a different disassembly approach.

# Background

How can you prevent others from seeing certain articles in your blog that is hosted by GitHub Pages?

This guide offers a strategy to host websites on GitHub Pages while keeping sensitive content private.

git-crypt enables transparent encryption and decryption of files in a git repository.

Here is a demo of how to use git-crypt to encrypt files in a git repository.

This article is solely for recording the successful configuration processes for Raspberry Pi 4B.

The environment is only applicable to Raspberry Pi OS.

Other environments have not been tested!