Adafruit
Adafruit Swirly Aluminum Mounting Grid for 0.1" Spaced PCBs
The Adafruit Swirly Aluminum Mounting Grid provides a mechanical substrate for mounting small microcontroller boards, sensors, and Feathers that use STEMMA Q...
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The Adafruit Swirly Aluminum Mounting Grid provides a mechanical substrate for mounting small microcontroller boards, sensors, and Feathers that use STEMMA QT plug-and-play connections. When you're snapping boards together with I2C cables instead of using a breadboard, this grid gives your project a solid, organised base.
Made from a single-sided aluminium-core PCB (no copper — just aluminium with black solder mask and white silkscreen), the grid features holes and slots on a 0.1" spacing pattern. The aluminium is easy to cut, drill, machine, or bend for custom configurations.
Key Features
- 0.1" Grid Pattern – Holes and slots every 0.2" on a 0.6" × 0.6" square grid
- Drill Holes – 2.54 mm (0.1") diameter
- Slots – 2.75 × 7.5 mm (0.11" × 0.3")
- Aluminium Core – Sturdy, easy to cut/drill/machine/bend
- Black Solder Mask + Silkscreen – Clean, professional appearance
Ideal For
- Mounting STEMMA QT sensor and board assemblies
- Organising multi-board Feather projects
- Creating a mechanical base for breadboard-free builds
- Custom enclosure and project box mounting
Package Contents
- 1× Swirly aluminium mounting grid
Jargon buster
Plain-language definitions for the technical terms used above.
- ground plane
- A ground plane is a large area of copper on a circuit board connected to ground. It helps provide a stable return path for signals and is especially important for reducing noise in high-speed connections.
- I2C
- I2C is a two-wire communication bus used by many sensors and small modules. It matters because several I2C devices can share the same two wires, but each device needs a compatible address and your controller must support I2C.
- microcontroller
- A microcontroller is a small computer on a single chip that runs a stored program and controls connected inputs and outputs such as buttons, sensors, displays and communication interfaces. In a device built around one, it is the part that executes the code and coordinates the device's behaviour.
- 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.
- STEMMA
- A plug-and-cable connection system used on some maker electronics boards to make wiring simpler. If a product uses STEMMA, you need the matching cable or connector type to plug it in without soldering.
- STEMMA QT
- A small plug-in connector system for I2C boards that lets you connect compatible sensors and controllers without soldering. It matters because it can make wiring faster and less error-prone, especially when adding several small modules to a project.
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