Up to 2 stepper motors (unipolar or bipolar) with single coil
Some nice details include a ready-to-go cable and a machined drive shaft (so you can easily attach stuff)
The 7-segment FeatherWing backpack makes it really easy to add a 4-digit numeric display with decimal points and even 'second colon dots' for making a clock
Because the clock and data is separated
each pixel is individually addressable
Adafruit "Music Maker" MP3 Shield for Arduino w/3W Stereo Amp Sensors Up to 2 stepper motorsBend all audio files to your will with the Adafruit Music Maker shield for Arduino! This powerful shield features the VS1053, an encoding decoding (codec) chip that can decode a wide variety of audio formats such as MP3, AAC, Ogg Vorbis, WMA, MIDI, FLAC, WAV (PCM and ADPCM). It can also be used to record audio in both PCM (WAV) and compressed Ogg Vorbis. You can do all sorts of stuff with the audio as well such as adjusting bass, treble, and volume