To top it all off there is a built in breadboard on which we can build our experiments. Two built in motor controllers mean we can build a robot using this board. Perhaps most importantly, it has four built-in analog inputs so you can attach analog devices such as potentiometers and joysticks without the need for an additional analog-to-digital converter chip (something the Pi lacks on its own). Four capacitive touch pads and four crocodile clip pads offer touch and capacitive input which can turn conductive objects, such as fruit and aluminum foil into fun inputs.īuffered 5v tolerant inputs and outputs and provide easy use of common electronic components you would normally need an Arduino board for.
Pins for hats pro#
The Explorer HAT Pro is an all in one electronics lab which fits neatly on to the GPIO. We've used the Explorer HAT Pro since 2015 and it remains a powerful add-on for the Raspberry Pi.
Does the HAT use all your pins? While most Raspberry Pi HATs physically cover all 40 GPIO pins, many of them allow a pass-through so you can use many of those pins with other devices or even another HAT stacked on top of the first one.įor general purpose experiments in electronics nothing can beat Pimoroni's Explorer range of boards. How can the HAT be programmed? Does it come with a Python module, and is it user friendly? Can it be programmed in another language? Is there documentation to support your learning?. If you are using a Raspberry Pi 400 then you will need a breakout board to access the GPIO. Raspberry Pi Zero W users may want to look for pHAT, smaller HATs designed for Zero form factor. 
Does the HAT work with your Raspberry Pi? Every Raspberry Pi since 2014’s Raspberry Pi B+ features a 40 pin GPIO, and all HAT boards are designed for that. 
What is the HAT for? If it’s for a particular project, does it do what you need it for? If it is for a child, does the HAT have enough features to grow with their learning?. When buying a Raspberry Pi HAT, ask yourself these questions: Why you can trust Tom's Hardware Our expert reviewers spend hours testing and comparing products and services so you can choose the best for you. HATs are an easy way to add extra features without connecting a mess of wires. The HAT standard follows a similar standard used by Arduino boards, where they are called "shields". It provided a standardized means to connect the Raspberry Pi’s set of 40 GPIO pins (increased from 26 to 40 with the B+) to add-ons providing functionality such as lights, motors, sensors and fans without a mess of wires. But all this changed when the HAT (hardware attached on top) standard was introduced along with the Raspberry Pi B+ in 2014. Some, such as the first official expansion, 2012's GertBoard (opens in new tab) were larger than the Pi itself. Originally the Raspberry Pi didn't have a standard definition for boards. But to make the most of the Pi, it helps to have the right expansion board. We can learn to code, build robots, monitor the location of the International Space Station (they've even been onboard the ISS!), and so much more. 
The Raspberry Pi is an awesome platform for learning and experimentation.
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