What Is Hardware Attached on Top (HAT)?
Hardware Attached on Top, or HAT, is an acronym used to describe a type of hardware component. This is a physical
extension module that plugs into devices, predominantly single-board computers such as the Raspberry Pi. The concept
of the HAT was introduced with the Raspberry Pi B+ model. The addition of a HAT can introduce various
functionalities like motor control, sensing, audio processing, LED driving, and more.
What Does HAT Stand For?
HAT stands for 'Hardware Attached on Top' . This name accurately describes its role: a piece of hardware that
physically connects, or 'attaches', to the top of a compatible device. To qualify as a HAT, the add-on board must
adhere to specific dimensions and design rules as set by the Raspberry Pi Foundation.
The Magic of HATs: Examples of Usage
To illustrate the versatility of HATs, let's take a few examples. For instance, a Sense HAT contains an
accelerometer , gyroscope , magnetometer, temperature sensor, barometric
pressure sensor, and humidity sensor all in
one. By attaching this HAT on a Raspberry Pi, you can develop an intricate weather station or even a space explorer.
Another fascinating HAT is the Keyfob HAT. This module provides a compact and user-friendly keyfob interface for your Raspberry Pi. It's perfect for those seeking to combine computing and remote control operations in an innovative and engaging manner.
Take a look on our example of a
Keyfob HAT .
Conclusion: The Power of HATs
In essence, 'Hardware Attached on Top' or HATs act as a bridge, allowing us to couple the world of physical
computing with the digital capabilities of single-board computers. With an understanding of what a HAT is and what
does HAT stand for, you can now navigate this exciting realm with confidence. Whether you are a tech hobbyist, a
budding engineer, or an experienced programmer, HATs provide the perfect platform to bring your innovative ideas to
life.