These are the main features of the PicoSplit:

• 3D-printable with common FDM printers.
• Its shape is inspired by the Dactyl keyboard.
• Allows you to keep your hands natural and relaxed, even after hours of typing.
• Interchangeable wrist rests that magnetically dock to the keyboard.
• Adjustable distance between keyboard and wrist rests.
• Keyboard and wrist rests can be magnetically attached to a surface.
• Keyboard halves snap together for transport.
• Switches and keycaps are interchangeable.
• The PicoSplit keyboard firmware is open source and based on CircuitPython.
• Readable configuration file format.
• Easily modifiable with some Python knowledge.
• Time-saving system for wiring the switches without having to use diodes.
• No need to install any other software on your computer.
• A simple text editor is all you need to modify the keyboard layout.
• A layout that reduces finger travel a lot is already included. It is inspired by the Miryoku layout.
• The Raspberry Pi Pico can be replaced by something else thanks to slide-in modules.

You can find a rather detailed instruction for building the keyboard on my homepage.