The Adafruit Perma-Proto 40-Pin Raspberry Pi Half-Size PCB Kit combines a compact half-sized prototyping board with a built-in Pi Cobbler breakout. Solder in the included 2×20 box header, connect a 40-pin GPIO cable, and you get labelled pin breakouts alongside 30 rows of breadboard-style prototyping space — ideal for smaller soldered Pi projects.

The PCB mirrors a standard half-size breadboard layout with 5-hole connected pads, four power bus rails, and clear silkscreen labelling. All holes are through-plated with a gold finish for durability and easy rework — no flaking pads or copper oxidation. Multiple mounting holes let you secure the board in an enclosure.

Key Features

• Built-in Pi Cobbler – 2×20 header position with labelled GPIO breakouts
• 30-Row Breadboard Layout – Half-size 5-hole pad pattern for compact projects
• Through-Plated, Gold-Finished – Durable pads that resist oxidation and survive rework
• 1.2mm Drill Holes – Accommodates components with larger leads
• 4 Power Bus Rails – Side-mounted power and ground distribution
• Multiple Mounting Holes – Secure attachment to enclosures and project boxes
• Cuttable Traces – Unmasked bottom side allows easy trace modification

Ideal For

• Compact soldered Pi projects with fewer components
• Space-constrained enclosures where a full-size board won't fit
• Custom Raspberry Pi HATs and expansion circuits

Also Consider

• Perma-Proto 40-Pin Full-Size PCB Kit – 60-row version for larger projects

Package Contents

• 1× Perma-Proto 40-Pin Half-Size PCB
• 1× 2×20 Box Header