Raspberry Pi Sense HAT
The Raspberry Pi Sense HAT is attached on top of the Raspberry Pi via the 40 GPIO pins (which provide the data and power interface) to create an ‘Astro Pi’. The Sense HAT has several integrated circuit based sensors can be used for many different types of experiments, applications, and even games. The sensors enable you to read:
Orientation (yaw, pitch & roll) via an accelerometer, 3D gyroscope and magnetometer; Pressure; Humidity;Temperature

The Sense HAT supports a whole host of projects for the Raspberry Pi, it can measure how fast is the Pi itself travelling (i.e. measure your speed), how hot is it? how humid is it? (air humidity), which direction is the Raspberry Pi facing?

The LED Matrix enables you to display the data from the various sensors, it can show you which way is geomagnetic North by programming a compass using the magnetometer, or simply be used to play games like Tetris, Pong and Snake with the joystick. The joystick can also be used to enable a human user to interact with the programs running on the Raspberry Pi Sense HAT.

Writing programs for the Sense HAT is very simple, with a Python library available to get started quickly and easily. For a truly out of world projects check out the AstroPi website, containing a host of ideas and instructions for using the Raspberry Pi and Sense HAT on the International Space Station (ISS)

Technical Specification:
Official Sense HAT from the Raspberry Pi Foundation
8x8 LED matrix display
Accelerometer, gyroscope and magnetometer
Air pressure sensor
Temperature and humidity sensor
Small 5 button joystick

Compatible With:
Raspberry Pi 2 Model B (sku.378251)
Raspberry Pi Model B+ (sku.334720)
Raspberry Pi Model A+ (sku.366971)

Application:
ASTRO PI
Raspberry Pi Sense HAT is being used in conjunction with the Raspberry Pi Foundation to perform science experiments aboard the International Space Station (ISS);

If you want to some match screws please refer to sku.393384 or sku.380330