Problem installing scroll pHAT HD

Following instructions on installation of the scroll phat HD, I’m getting a message
Unable to install smbus for python 2!
Unable to install smbus for python 3!
And I can’t get it to work. It’s a raspberry pi 3b with a fresh up to date install of NOOBS.
How do I get the pHAT to work?

My recommendation is to ditch NOOBS and just install Raspbian straight to the SD card. Etcher will do it all for you.

Scroll down to the Etcher part of the instructions

I say this because “sometimes” the file structure / partition layout NOOBS uses causes issues. Things aren’t where the installer thinks they are etc.
Plus, if your only ever going to use Raspbian, NOOBS IMHO is just excess baggage. You’ll also gain a bit of extra room on your SD Card.

If you do all this and still have issues don’t panic, it could also be an issue with Buster. If need be you can install Stretch, you can get the older versions here.
Hopefully it won’t come to that.

Thanks. I’ll give it a go.

Are running Raspbian Lite?
If yes try this first
sudo apt install python-smbus python3-smbus
sudo apt install python-smbus python-smbus