Left: The Arduino
board with the
DFPlayer on the
prototype shield.
Note on the top-left
side the connection
of the player to the
Arduino Tx and Rx
signals, with the 1K
resistor in series to
the Rx signal. Pin 2
(blue cable) will
receive the control
input from the
Micro Bit
Right: The
essential electronic
components of the
project connected
on the bench for
testing. As you can
see, the FDPlayer
Mini shield is
removed from the
Arduino board to
upload the sketch to
the microcontrollerAbove: The components to build the musical
box. From left to right, top to bottom: the
Arduino MP3 player, the audio speaker, the
Micro Bit, the micro servo and the pre-
assembled 3D-printed parts
The core of the MP3 music player is based on
the DFPlayer Mini MP3; this cheap all-in-
one device is available for a few dollars on
the DFRobot site