Page 92 - Raspberry Pi as a Foundation for Boosting Computer and Technology Literacy

7 Basic projects for getting to know Raspberry Pi
energy to take it to the next step. On the other hand, after seven
years it still works, and we still admire other makers who managed
to invest several days into their projects that resulted in ultimate
MagicMirrors. One day, we believe, we may at least update our
MagicMirror to version 2. We shall do this by:

15. Accessing the MagicMirror directory:

cd ~/MagicMirror

16. Fetching the latest changes from the MagicMirror repository:

git pull

17. Installing the new dependencies or updating existing ones:

npm install

18. Checking the release notes (it is a good idea to check the release
notes before updating as we are updating a specific version)
19. Restarting MagicMirror:

npm start

7.5 Simple music transport 7.5
With product designers in Toulouse, France and production in Ban-
galore, India, Allo (see: https://allo.com/company.html) has become
quite popular with the DIY community of music lovers. Here, we are
going to present a project on a digital music transport based on the
Raspberry Pi 4. Who would build something like this? Imagine, that all
your music is either on external drives, USB keys, or on an NAS. If you
have a decent hi-fi system that consists of an integrated amplifier with
an external or built-in DAC and a pair of speakers, you may also want
a decent digital transport. Remember, in a music signal chain, a digital
transport is always located before a DAC, so the digital transport that
serves the digital data to a DAC is very important for the sound quality
of the whole music system.
The music transport described here consists of two HATs and a
Raspberry Pi 4, which is why we call it simple. There are simpler builds

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