wtf is handy-m0100-firmware?

Handy M0100 Firmware is the software that powers a clever DIY project: turning a vintage 1985 Apple M0100 mouse into a modern wireless button that triggers speech-to-text on your computer. Instead of clicking around your screen, you press the old mouse button and it sends a keyboard shortcut to your computer, telling it to start listening for dictation. The software runs on a tiny, low-cost computer chip called the Seeed XIAO BLE, which handles the Bluetooth connection to your computer. It is built on top of an existing open-source platform called ZMK Firmware, which is designed for building wireless custom keyboards and input devices. By default, pressing the mouse button sends a specific keyboard combination (Right Control + Right Meta) to your computer, which you can map to whatever speech-to-text tool or dictation feature you prefer. This project is aimed at hobbyists and makers who enjoy blending retro hardware with modern technology. You would use this if you have an old Apple M0100 mouse lying around and want to give it a second life as a dedicated, physical push-to-talk button for everyday writing. A founder, writer, or developer who frequently dictates notes, emails, or documents could use it as a tactile, standalone trigger for their favorite voice-to-text software. What makes this notable is the approach to hardware revival. Rather than trying to restore the mouse to work as a traditional pointing device, the firmware completely reimagines its purpose. The project also embraces accessibility, you can tweak the keyboard shortcut directly in the code, or use a visual tool called ZMK Studio to generate a new version of the software without needing deep programming knowledge. The actual hardware build, including 3D-printed parts and soldering, is documented on the creator's separate project blog.