sentence: Shields can also combine and stack on top of each other.
sentences_before: Sometimes, people will make other machines that go on top of an arduino, that lets the arduino do more things. They can do different things, like let an arduino machine connect to the internet, or add a touchscreen, or let an arduino use GPS to figure out where it is.
concept_name: shield
headings: Arduino "Shields"
categories: Software Computer hardware