Is there a canonical simple "helloworld" neural network design? Something beyond AND/OR logic, a handful of nodes that does something mildly "useful"?

I've been building a memristor with the idea of creating a small hardware neural network, and am hoping someone has ideas for a neural net with only a handful of neurons (since I have to make each connection by hand). Ideas?

Thinking maybe something like a three input light tracker for a little solar panel, but was curious if there were other ideas.


[https://bigattichouse.medium.com/penny-for-your-thoughts-copper-based-electrolytic-memristor-neural-network-part-4-8a6e43a3ce26](https://bigattichouse.medium.com/penny-for-your-thoughts-copper-based-electrolytic-memristor-neural-network-part-4-8a6e43a3ce26)

canonical design logic network neural network neuralnetworks