Let's take a look at what comes on the Adafruit STEMMA Speaker plug and play audio amplifier!

Speaker and Connector

Located in the center of the board is the 1 watt 8 ohm speaker connected to the board via a Molex PicoBlade connector.

JST Connector

The easiest way to connect the STEMMA speaker to your project is the 3-pin JST connector at the base of the board. There are 3-pin JST to various connectors available, including to alligator clip and breadboard pin options, to make it super easy to connect it to any kind of project.

  • White Signal (SIG) This is 0-3V signal input, we decouple this signal so it can be AC or DC coupled.
  • Red Power (+) This is 3-5V DC power
  • Black Ground (-) Signal/power ground

Alligator Clips

The STEMMA speaker comes with three alligator clips pads to use with alligator clips. In the image to the left, they are top to bottom:

  • Signal (SIG) This is 0-3V signal input, we decouple this signal so it can be AC or DC coupled.
  • Power (+) This is 3-5V DC power
  • Ground (-) Signal/power ground

Volume

You can change the volume using a small screwdriver to rotate the volume trim pot.

Amplifier

The board includes a class D amplifier located above the JST connector.

This guide was first published on Oct 04, 2019. It was last updated on Oct 04, 2019.
This page (Pinouts) was last updated on Oct 25, 2020.