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.
Examples of HAT Usages
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.
Conclusion
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.
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