Issues with Neopixel Jewel

Hi all, I'm a beginner who's dealing with the Jewel, a specific kind of Neopixel led, and working with this sketch in particular (link https://learn.adafruit.com/10-minute-neopixel-necklace/arduino-code).

The problem is, when I load it that's the message I receive "done in 0.013 seconds CPU reset.", and nothing else happens.

Any ideas? Do you eventually know some tutorials that are focused on Jewel Neopixels?

Your friendly neighbourhood maker, Gio_

So clearly the upload went as planned but either the code or the wiring is incorrect.

Hard to tell which so maybe you want to use the following links to help you to help others diagnose the issue.

Could you take a few moments to Learn How To Use The Forum. Other general help and troubleshooting advice can be found here. It will help you get the best out of the forum in the future.