Project Overview

This is my first pass at building myself a small, portable, decent sounding digital audio player based around a raspberry pi zero and some additional hardware along with a 3d printed case.

My goal is to build myself a music player I can carry as my primary listening device that sounds good, can carry a large portion of my music library, has a simple user interface, has a more powerful backend interface, and does not cost a fortune.

For this first iteration, I have selected three HATs - a display hat with d-pad and utility buttons, a digital audio board, and an uninterruptible power supply board with battery. The selections of the hardware chosen was based more on availability at the time of ordering than any in-depth research in to the pros and cons of each device amongst its peers. As it turns out, there are a few GPIO pin assignments that two or more of the HATs will be trying to use for their own devices (ha) so I'll have to bodge that wire when I get to it.

The other hardware consists of a raspberry pi zero w board, a 32gb micro sd card, a micro-usb to usb-a plug cable, and a 256gb usb flash drive. The flash drive will be the music library storage and will be externally accessibly, should I want to remove it to modify the library contents on a system with a faster storage bus going for it. also, I could carry around a tiny fake pleather cassette carrying case that had a couple dozen usb flash drives in it and have literally terabytes of high quality music at my disposable. tres chic!

installation and dev log

TODO: clean up log entries, flesh out details for readers

TODO: add project goals, features, BoM, relevant links

TODO: set up repo directory structure

TODO: move all these todos into issues or something i dunno

initial setup

wrote raspbian image to sd card

added empty file /boot/ssh

added file /boot/wpa_supplicant.conf:

country=US
ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
update_config=1

network={
    ssid="WIFI_SSID"
    scan_ssid=1
    psk="WIFI_PASSWORD"
    key_mgmt=WPA-PSK
}

booted pi

logged in via ssh

changed passwd

sudo raspi-config

• set up locale

• disable wait for network at boot

• resize filesystem in advanced

reboot

logged in via ssh

confirmed filesystem resize

sudo apt update && sudo apt upgrade -y && sudo apt install tmux usbmount vim wiringpi python3-pip

sudo vim /etc/hostname

changed to soundslab

shutdown -h now

install and configure DAC hat

added hat to pi zero

booted pi

sudo wget -O - script.raspiaudio.com | bash

reboot

install and configure display hat

https://www.waveshare.com/wiki/Libraries_Installation_for_RPi

wget http://www.airspayce.com/mikem/bcm2835/bcm2835-1.60.tar.gz
tar zxvf bcm2835-1.60.tar.gz 
cd bcm2835-1.60/
sudo ./configure
sudo make && sudo make check && sudo make install

sudo pip3 install RPi.GPIO

install and configure UPS hat

install musikcube from github

https://github.com/clangen/musikcube/wiki/raspberry-pi

install UI script from gitea

TODO: write this script!

install startup scripts from gitea

TODO: write these scripts!

reboot into soundslab!