As an Engineer, for a long time I have been saying "One day I will get into Raspberry Pi and Arduino".
I've got a Raspberry Pi model 4B which I am mostly using for Pi-hole. There are a few other things running on there but I find that I don't want to do too much experimentation as it's running an important network service.
I got hold of a Raspberry Pi Zero W, so now it's time to play! How much trouble can I get myself into with a single core processor?
Now I also have a Pi Zero W 2 which has 4 cores, so now I can get into 5 times as much trouble :)
These are my notes: