The Raspberry Pi’s venerable 40-pin header and associated HAT ecosystem for upgrades has been a boon for the platform. It’s easy to stack extra hardware on to a Pi, even multiple times in some cases.

One of the things that makes Raspberry Pi’s small and inexpensive single-board computers interesting is the 40-pin connectors that makes it possible to connect expansion boards called HATs (which ...

“With PiSquare You can create the server from Raspberry Pi and run as many HATs as you like as a client to run multiple Raspberry Pi HATs, You can also make the PiSquare a client and run it as a ...