Follow the diagram to hook up your parts. DIO-9 can be hooked to a buzzer, or you can hook up a speaker by using alligator clips to attach the tip and sleeve of the plug to the Signal and Ground of DIO-9. If you have a phono jack handy, you can use that instead for a solid connection.

The alligator clips will enable you to quickly experiment with different sound outputs (buzzer, speaker, headphones, guitar amp, effects pedals, earthquake generator), so we recommend using them to get started. Notice that we skipped over the Ring. Ring is most commonly used for a second channel. We are only outputting in mono. If you hooked up a pair of headphones with the connections on only the tip and sleeve, you will only get sound through the right side.

As for the physical layout of the thing, we tried to match closely the arrangement in Nugetteero's video, however, you can really arrange the parts however you'd like.