Callum Nunes-Vaz repurposed an old soviet vacuum fluorescent display (VFD) for use in a wristwatch:
The VFD display (IVL2-7/5) is a piece of soviet new-old-stock (NOS), and has a unique look to it. Making a watch out of it is a logical progression for anyone wants to give portability to the mesmerising glow of the display.
Callum shared the board on OSH Park:
Here’s a video of the display in action: