Look at all those gold teeth! Yep, there's a lot of connections along the bottom edge of the BBC micro:bit.

They do all kinds of crazy things as you can see in the image below. You can even get a special connector to make using them easier. The big brain of the BBC micro:bit can do a lot of things, and they just wanted to make sure there was a place to get access to them.

Pretty much every program will just use the 5 pads with the big holes. So for now, don't worry about all those other little ones.
This guide was first published on Aug 27, 2017. It was last updated on Aug 27, 2017.
This page (Edge Connector) was last updated on Oct 31, 2020.