Barputer

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Barputer
What:
In a hackerspace a computer is needed everywhere, included behind the bar. So this project was born.
Beer computer-300x290.jpg
Participants:
Koen, Koert
Category:
Electronics
Locations:
Den Bunker

Contents

Function

Hardware

Internal

The computer is situated in the corner at the end of the bar. Its audio jack is connected to the amplifier next to it to play music.

Touchscreen

The touchscreen is located at the other end of the bar and is connected to the case through a USB cable for the input devices and a VGA cable for the output (screen).

Misc

Software

Touch

Install the needed packages:

sudo apt-get install xserver-xorg-input-elographics xserver-xorg-input-evdev-dev utouch sudo apt-get install xinput-calibrator

Recognize the device at boot

echo 'inputattach -elo /dev/ttyS2' >> /etc/rc.local

Calibrate the touchscreen:

xinput_calibrator > /usr/share/X11/xorg.conf.d/99-calibration.conf

Add the device to /etc/xorg.conf

Section "InputClass"
Identifier	"calibration" MatchProduct	"Elo Serial TouchScreen" Option	"Calibration"	"4015 -4 6 4026"
EndSection

Music

We use MPD (Music Player Daemon) as a server. This allows us to use various clients at the same time, including over the network and on portable devices. For information on playing music, see How to play music.

To add music to the MPD library we originally used djmount, a program which automatically mounts UPNP shares. This setup was copied from Whitespace and is documented here. Although this setup kind of worked, it didn't for some people. One of these people was berz_, who wrote a script which automounts sambashares which we currently use. We might complement this with djmount, allowing everyone to pick the one they prefer. This isn't implemented at the moment because no one bothered to use UPNP yet. For information on adding your own music to the database, please see How to play music.

Point of sales & Stock management

Using the vwcr application made by Koert. It's not completely finished yet, but it can be used (and is being used).

TODO

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