Adafruit Industrial Computing & PLCs PCB (unequipped) 623758 - Adafruit 1608, Adafruit's 1608 is a quarter-sized Perma-Proto breadboard PCB, designed for consistent prototyping. It provides standard breadboard layout with robust copper traces for durability. Commonly used in electronics projects, it ensures secure and permanent connections for components. Adafruit 1608 PCB Prototyping Board Gold-Plated Thru-Plated 5-Hole Pad