What are some examples of domestic products that use programmable interface controllers?

I saw a 1kw (1000w) panel pack on amazon for $1k and I d like to know what’s it going to be enough for and what else is there that I need to complete the setup, I mean the batter...

I'm building a mousetrap car for my high school physics class. The goal is to get it to go as far as possible, and the materials allowed are: Mouse trap (given to us) String (given...