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...
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 is a small circuit board that makes a tiny or hard-to-solder component easier to connect to with standard pins. It matters because this OLED module can be wired into a microcontroller project without needing to solder directly to the display’s fine 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 metal pins used to plug a module into a breadboard or connect it with jumper wires. Pre-soldered headers make the module easier to use straight away without needing to solder the pins yourself.
- PCB
- A printed circuit board is a rigid board with copper tracks that connect electronic parts without loose wires. For this kit, the PCBs also form the airplane shape, so they are both the circuit base and part of the finished model.
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