Tag Archives: Arm

Bufallo III based streamer

1. BBB + Volumio – Debian updated to Jessie, MPD git 0.19.2

2. I2SoverUSB

3. Bufallo III – stereo config

4. IVY Line stage

 

Power source

1. DAC – Placid HD

2. line stage – Placid HD bipolar

3. BBB – linear power supply 5V

 

Case

Cutie metalica

 

 

volumio bbb – update

install latest volumio release

1. update to jessie

# cp /etc/apt/sources.list{,.bak}
# sed -i -e 's/ \(stable\|wheezy\)/ testing/ig' /etc/apt/sources.list
# apt-get update
# apt-get --download-only dist-upgrade
# apt-get dist-upgrade

2. update to latest kernel – am33x-v3.17 – best use a virtual machine to save time

http://www.eewiki.net/display/linuxonarm/BeagleBone+Black

3. compile mpd from git

http://mpd.wikia.com/wiki/Repositories

http://mpd.wikia.com/wiki/BuildingMPD

4. install missing libraries

apt-get install smbclient libnfs4 libicu52

5. rename old mpd and create symlink to the new one

6. change vim /lib/systemd/system/mpd.service with actual conf path

7. HWCLOCKACCESS=no

vim /etc/default/hwclock

8. monitor – disable?

9. set cpu frequency

cp /usr/share/doc/cpufrequtils/examples/cpufrequtils.sample /etc/default/cpufrequtils

governor performance

10. install i2c

apt-get install i2c-tools

apt-get install python-smbus

i2cdetect -r 2 – check device (48)

 

 

 

ARM – pops dsd play solution

edit

/etc/sysctl.conf

and add to the end of the file

vm.min_free_kbytes=25000

verify

 sysctl -a | grep vm.min_free_kbytes

Cubox-i

Dupa aproape 4 luni de asteptare a sosit

imagine

1. Set-up a mpd server – http://imx.solid-run.com/forums/viewtopic.php?f=8&t=787

a. To optimize the system, you can also replace NTPd with ntpdate. This one is said deprecated by ARchLinux but fully functionnal. It avoid continuous requests done by NTPd which are mosts of the time uneeded for an audio streamer. The main idea here is removing NTPd, installing ntpdate and using a cron job once a day to update the real time clock.

de scos din rc si pus in cron o data la 2 ore

systemctl disable ntpd

crontab -e

0 * * * *  /usr/sbin/ntpd -qg

2. [root@alarmcbi ~]# mount /media/music/
mount error: cifs filesystem not supported by the system
mount error(19): No such device
Refer to the mount.cifs(8) manual page (e.g. man mount.cifs)

De vazut de ce nu merge cu cifs

3. Static IP Address – Optional – pt varianta finala

aici este “/usr/bin/ntpd -gq || true”

4. modify /etc/hostname

5. update mpd-conf

6. check alsa samplerate daca merge cu Sox