Further thoughts

It looks like I can drive unipolar stepper motors with nothing but a simple circuit, so in the flavor of bootstrapping, that’s what I’ll do. I’ll order those when I order parts for…
When we first got our second kitteh, I pointed out that if there was issues with their cohabitating, that I could build an RFID based safety doors. Since the younger of the two likes to eat the food of the older, it looks like that’s what I’m doing. Now to spec that out and get purchasing.