When planning and gearing up for a secret op, every good agent needs some motivational spy music to set the tone! (Get it? Tone? Sorry, not sorry!) 

With a Circuit Playground Express and its built-in speaker you can make your spy themes shine. Programming songs using MakeCode is fun! You can write your own tunes from scratch, or transcribe music.

On Gemma M0 with an added piezo buzzer, we'll look at using CircuitPython to write music as well!

1 x Circuit Playground Express
The microcontroller with the works
1 x Gemma M0
Tiny microcontroller with a kick
1 x Piezo Buzzer
Petite but loude
1 x USB cable
6" A/MicroB
1 x 3 x AAA Battery Holder
w on/off switch and 2-pin JST
1 x AAA batteries
Alkaline 3 pack

You'll also use two M3 x 8mm screws and nuts to connect the piezo to the Gemma M0.

This guide was first published on Mar 24, 2018. It was last updated on Jul 22, 2024.

This page (Overview) was last updated on Mar 08, 2024.

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