Flip-Dot Display
A flip-dot display is an electromechanical dot-matrix display where each "pixel" is a small disc that flips between two colors (typically black and a bright color like yellow or white) using electromagnetic pulses.
Key features:
No power needed to maintain state: Discs stay flipped until the next pulse.
Distinctive sound: The flipping action creates a rhythmic mechanical noise, often described as soothing or nostalgic.
High visibility: Ideal for outdoor use (e.g., bus signs, highways) due to excellent readability in direct sunlight.
 
Modern Applications
Transportation: Bus/train destination signs.
Advertising & Art: Interactive installations.
Retro-Tech Projects: Hobbyists use Arduino or Raspberry Pi to control vintage displays for creative coding.