Adafruit
Adafruit Perma-Proto 40-Pin Raspberry Pi Half-Size PCB Kit - with 2x20 Header
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...
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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
Jargon buster
Plain-language definitions for the technical terms used above.
- breakout
- A breakout board carries a small or fine-pitched component and brings its connections out to standard, breadboard- and header-friendly pins. Describing a part as a breakout means it can be wired into a project without soldering directly to the component's tiny contacts.
- GPIO
- General-purpose input/output pins are microcontroller pins you can set in software to read signals, switch devices on and off, or connect to peripherals. The number of GPIO pins matters because it limits how many buttons, LEDs, sensors, and other parts you can wire directly to the board.
- Headers
- Rows of connector contacts on a fixed pitch (commonly 2.54 mm) used to link a board to a breadboard, jumper wires, or another board. They come as male pin headers and female socket headers; when a module ships with pre-soldered headers it can be used straight away, whereas bare pads require soldering the pins yourself.
- PCB
- A printed circuit board (PCB) is a board, usually rigid, with etched copper tracks that connect electronic components together without loose wiring. Components are mounted on the board and signals route between them through the copper layout.
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