Page 93 - Raspberry Pi as a Foundation for Boosting Computer and Technology Literacy

Simple music transport 7.5
available, with only one HAT on top of a Raspberry Pi; and there are
many more expensive options available verging on the DAC we de-
scribe below. What is good is that all of them are upgradable, meaning
a relatively small investment can lead to improved sound quality.
1 This is what you need:

1. A Raspberry Pi 4 (with at least 2 GB of RAM)
2. A microSD card with an OS installed on it (MoOde, Volumio, Diet
Pi, Max2Play, Ropieee)
3. A HAT like Allo’s Digione signature ( Allo’s Digione signature),
which consists of two boards: one for the dirty side (powering
Raspberry Pi) and one for the clean side, which sits on the top
(clocks, buffers, flip-flops are to be found here, as well as BNC and
coaxial outputs).
4. A power supply to power both sides through a USB-C input

a. The first option is powering both sides with a 5V 3A switch
mode power supply, which is cheap but not recommended.
b. The second option is powering the dirty side with a 5V 3A pow-
er supply and powering the clean side with a battery power
supply, as the clean side requires only 100mA.
c. The best option comes last: power the clean and dirty side of
the music transport with a Shanti (a dual linear low noise pow-
er supply; more here:  Allo’s Shanti (EU).
2 Under 2 above we mentioned the OS for the transport. As you can
see, there are many options for the music player software. A good,
open-source and community-maintained music streamer and player
is moOde 8. After downloading it from  moode™ audio player and
preparing the ISO image with Raspberry Pi Imager, one only has to
follow the set-up guide, which is available on github ( Github.com;
moode-player). Initial installation of moOde is done in a couple of
minutes; additional configuration of the moOde audio player is pos-
sible through the player’s Menu, Quick Help and the (i) information
buttons once you have accessed the moOde WebUI using a browser (on
phone, tablet, or another computer). Simply type this in the browser:
3
a. http://moode.local or
b. http://IP_ADDRESS

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