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tech:rpi:start

Raspberry Pi

RaspEX

Installation

  • Write image onto MicroSD
  • Boot, take note of MAC addresses and add to LAN DHCP/DNS accordingly
  • Run the resize_rootfs.sh script as root (its in /root)
  • Change hostname (in both /etc/hostname and /etc/hosts) and reboot

Initialization Tips & Tricks

Date/Time

  • Set timezone: dpkg-reconfigure tzdata
  • Calibrate date/time: ntpdate us.pool.ntp.org
  • Edit /etc/ntp.conf and start NTPD with /etc/init.d/ntp start

Migrate user(s)

  • Create desired login(s)
    groupadd -g 1xx0 yourgroup
    useradd -u 1xx0 -g 1xx0 -d /home/yourlogin -s /bin/bash -c "Your Name" -m yourlogin
  • Add login(s) to groups (use id -a raspex to identify list of groups needed for admin login)
    usermod -a -G list,of,group,names yourlogin
  • Add login to /etc/sudoers
  • Delete default user: deluser raspex ; rm -rf /home/raspex

Disable Auto-Login

Edit /etc/slim.conf and change the auto_login value to no

Details ...

  • Wallpaper location: /usr/share/images/bunsen/wallpapers/default
  • Disable conky: apt remove –purge conky conky-all

Packages

  • apt install xscreensaver
  • apt install git

Notes

Basic Installation

misc

  • Change root and pi passwords
  • Enable SSH at boot, use raspi-config in the “Interfacing Options” section
  • Add user, ensure groups, and sudoers
  • Update host name in:
    • /etc/hostname
    • /etc/hosts
  • If necesary, resize root partition, reboot, resize fs
  • Install (via apt-get) some basics:
    • ksh
    • htop
    • xterm
    • rsync
    • git
    • libudev-dev
    • libusb-1.0-0-dev
    • libfox-1.6-dev
    • autotools-dev
    • autoconf
    • automake
    • libtool
    • xfe (optional)

MythTV Front End

See original for complete reference: https://www.mythtv.org/wiki/Raspberry_Pi

  • Configure gpu_mem=256 using raspi-config
  • Configure this to be run at each boot (put in /etc/rc.local):
    echo "performance" | /usr/bin/tee /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
  • Disable pulseaudio
    • In /etc/pulse/client.conf set autospawn=no and daemon-binary=/bin/true
  • Install MythTV Light per instructions at https://www.mythtv.org/wiki/MythTV_Light
    • In /etc/apt/sources.list add a line like:
      deb http://dl.bintray.com/bennettpeter/deb stretch myth28
    • Add key:
      wget -O - https://bintray.com/user/downloadSubjectPublicKey?username=bintray | apt-key add -
    • apt update
    • apt install mythtv-light
    • apt install mythplugins-light

USB Relay

  • Make a copy of /var to /home/sys
  • Prune /home/sys/var
  • Set up tmpfs mounts, like (pay attention to mode and size):
    tmpfs /var/log tmpfs defaults,noatime,nosuid,mode=0755,size=100m 0 0
    • /tmp, no mode, size=100M
    • /var/tmp, no mode, size=30M
    • /var/log, mode=0755, size=100M
    • /var/spool/mqueue, mode=700, gid=12, size=30M
  • Clone source for USB relay control:
    git clone git://github.com/signal11/hidapi.git
    git clone https://github.com/darrylb123/usbrelay.git
  • Build HIDAPI, cd to source dir and:
    ./bootstrap
    ./configure --prefix=/usr --enable-testgui
    make
    make install

You need HIDAPI and USBRELAY:

git clone git://github.com/signal11/hidapi.git

Check out the readme, and install dependencies before installing.
then:

git clone https://github.com/darrylb123/usbrelay.git

Then, in usbrelay folder:

gcc -o usbrelay usbrelay.c -lhidapi-libusb

Then do:

ldconfig

Read more here:

To get status:

./usbrelay 2>/dev/null


To get status in bash script:

$ eval $(sudo ./usbrelay 2>/dev/null)
$ echo $PSUIS_2

Turn on:

/usbrelay EO5ZA_1=1

Turn off:

/usbrelay EO5ZA_1=0
tech/rpi/start.txt · Last modified: 2018/12/10 18:14 by rk4n3