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A set of stackable headers designed for the Arduino Uno, Arduino Pro, and other boards using the classic (pre-R3) pin layout. These female headers sit tall e...

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A set of stackable headers designed for the Arduino Uno, Arduino Pro, and other boards using the classic (pre-R3) pin layout. These female headers sit tall enough to clear the USB-B connector, making them ideal for stacking multiple shields. The kit includes two 8-pin and two 6-pin headers — enough for one complete shield connection.

Key Features

  • Stackable Design – Female sockets on top, male pins below for stacking multiple shields
  • USB-B Clearance – Tall enough to clear the USB connector on standard Arduino boards
  • Classic Pin Layout – Fits boards using the original Arduino header layout (2× 8-pin, 2× 6-pin)

Ideal For

  • Stacking shields on Arduino Uno, Pro, and compatible boards
  • Custom shield and breakout board projects
  • Prototyping with multiple shields

Package Contents

  • 2× 8-pin stackable headers
  • 2× 6-pin stackable headers
Tip: If your board uses the Arduino R3 layout (with IOREF, SCL, and SDA pins), you'll need the R3 version of this header kit instead.

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.
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.
SCL
The clock line used by the I2C bus to keep data transfers timed between a controller and connected devices. When wiring I2C, SCL must be connected to the SCL pin on every device sharing the bus.
SDA
The data line used by the I2C bus to carry information between a controller and connected devices. When wiring I2C, SDA must be connected to the SDA pin on every device sharing the bus.
Shield
An add-on board that plugs into a main controller board to give it extra features such as sensing, motor control or communication. Knowing a product supports shields helps you judge whether it can connect neatly into an existing maker-board setup.

Supplier page — sparkfun.com

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