While the Raspberry Pi has very good support for an I2C bus, a lot of very cool chips – including the in system programmer for just about every ATtiny and ATmega microcontroller – use an SPI bus.

NOOBS is the built-in operating system installer for Raspberry Pi. But if you already know which operating system you want to use, there's a quicker way to get your Pi up and running. Taylor Martin ...

There’s also a Python library (basically a set of commands you can use to control the robot) available to go alongside the HAT, which will let you write software to control the robot parts you’ve got ...