HAT vs pHAT vs wHAT

[Kiwi]

I know what a HAT is but what is a wHAT or a pHAT. Is it something to do with size?

[Shoe]

So the HAT specification is written by the Raspberry Pi team, and you have to do certain things to call your product a HAT (officially, anyway).

There’s no official specification for a Pi Zero-sized addon, so Pimoroni created their own pHAT term (might be partial hats?), whereas Adafruit uses terms like Bonnets for add-ons which are that size.

wHAT I think is just “wide-HAT”, a Pimoroni thing.

So pHAT and wHAT are unofficial terms for differently sized addons the Pi company hasn’t created anything official for.

EDIT: It looks like the newer HAT+ specification is less choosy about HAT size, so technically something Pi Zero-sized could officially be a HAT+ if it complied with the other requirements.

[Kiwi]

@Shoe

EDIT: It looks like the newer HAT+ specification is less choosy about HAT size, so technically something Pi Zero-sized could officially be a HAT+ if it complied with the other requirements.

I see some stuff on the Pimoroni store that is Pi 5 size and called “HAT+”, but some stuff, like the Clipper HAT Mini is called “Mini”. It’a pHAT sized, but it’s called “mini”?

[hel]

mini HATs and pHATs are the same size - we switched to ‘mini HAT’ for recent products as it’s a bit more descriptive :)