The Adafruit Small-Size Perma-Proto for Raspberry Pi is a quarter-sized prototyping PCB with a built-in Pi Cobbler layout. Solder in the included 2×13 box header to get labelled GPIO breakouts with plenty of prototyping space, power rails, and mounting holes — all on a single board.

The top side features clear white silkscreen markings that match a standard breadboard layout (17 rows), making it easy to transfer circuits from a solderless breadboard. The bottom uses a 4-hole pad design with four power bus lines and no solder mask, so you can easily cut traces when needed. All holes are through-plated for durability, with a gold finish to prevent oxidation.

Key Features

• Built-In Pi Cobbler – 2×13 header provides labelled GPIO breakouts directly on the PCB
• Quarter-Size Breadboard Layout – 17 rows matching standard breadboard spacing for easy circuit transfer
• Through-Plated Holes – 1.2 mm diameter drill holes with gold finish for strength and corrosion resistance
• Power Bus Lines – Four power rails along the edges for convenient wiring
• Mounting Holes – Multiple mounting points for securing to project enclosures
• No Solder Mask on Bottom – Easy to cut traces for custom routing

Also Consider

• Half-Size Perma-Proto Raspberry Pi Breadboard PCB Kit
• Full-Size Perma-Proto Raspberry Pi Breadboard PCB Kit

Compatibility

• Raspberry Pi Model A and B (original 26-pin GPIO)

Package Contents

• 1× Small-size Perma-Proto PCB
• 1× 2×13 box header