MP3 Player with Sense HAT

Mount the Sense HAT on your Raspberry Pi.

1. Power off your Raspberry Pi.
2. Carefully align the Sense HAT with the GPIO pins.
3. Press the Sense HAT firmly onto the pins until it's fully seated.
4. Power on your Raspberry Pi.

Make the Sense HAT LEDs sparkle randomly.

1. Open Scratch 2 on your Raspberry Pi.
2. Delete the default cat sprite and add a new sprite for your MP3 player.
3. Add the Pi GPIO extension for Sense HAT.
4. Add a 'when flag clicked' block with a 'forever' loop.
5. Inside the loop, use 'set pixel' blocks with 'pick random' blocks to light up random LEDs in random colors.

Upload MP3 files to your Scratch sprite.

1. Save at least 3 MP3 files in the same directory as your Scratch project.
2. In Scratch, go to the Sounds tab for your sprite.
3. Click 'Upload sound from file' and select your MP3 files.
4. Repeat for all your music files.
5. Add a 'play sound' block above your 'forever' block to play the first track.

Show which track is playing on the Sense HAT.

1. Create a new variable in Scratch called 'track'.
2. Set 'track' to 1 at the start of your program.
3. Add a 'scroll message' block that displays the track number on the Sense HAT.

Control volume and skip tracks using the Sense HAT joystick.

1. Add a 'set volume to 100%' block at the start.
2. Create a 'when up arrow key pressed' event that increases volume by 10.
3. Create a 'when down arrow key pressed' event that decreases volume by 10.
4. Create a 'when left arrow key pressed' event that decreases the track variable and plays the previous track.
5. Create a 'when right arrow key pressed' event that increases the track variable and plays the next track.
6. Add 'stop all sounds' at the start so tracks don't overlap.