If you are using the Adafruit Metro Express, the wiring below should be used. If you're not sure what board you have, check this page.

The power rail on your breadboard should connect to the 3.3V pin on the Metro Express
This guide was first published on Aug 18, 2017. It was last updated on Aug 18, 2017.
This page (Wiring for Metro Express) was last updated on Sep 20, 2020.