DKF BUZZ-WIRE GAME

The Department of Clinical Research of the University Hospital Basel will present itself at the Uninacht 2015 (Night of the University) to the public with a "mock" clinical study.

The study intervention is comprised of performing a buzz-wire game. All participants will be randomly split into two groups (using a wheel of fortune).

One group will perform the buzz-wire regularly, whereas the other group will first turn themselves around by 1080 degree (3 full turns).

Performance on the buzz-wire game will be measured by the time needed to finish the game and by the amount of contacts made with the wire.

In addition the gender of the participant will be recorded (to analyze for gender influence on the result).

To compare the two groups, we will calculate a game score for each participant:

1. Starting score 25 points
2. Add the number of seconds remaining as each 1 point
3. Multiply the number of wire-contacts by the factor 2 and subtracted from the score
4. Subtract 20 points if game was not finished

We hypothesize that the performance of the turning group will be worse than the performance of the regular group.

ABOUT THE BUZZ-WIRE BOX

coming soon..

ABOUT THE CODE

To automatically measure the time required and number of contacts a Raspberry Pi (Modell 2) with a custom made program is used.

The program is written in Go - with the help of Gobot – and uses a webpage with a websocket connection as user interface.

The Raspberry Pi is setup with Raspbian and an up-to-date installation of iceweasel (Firefox).

The webpage primarily uses svg for all graphics and Velocity.js for animations.

Please see below for a description on how to setup the pi given that you are connected to it over ssh with a computer with Go installed (with Go Version >= 1.4).

INSTALL FIREFOX (ICEWEASEL) AND MANUALLY PUT IT IN FULLSCREEN MODE

sudo apt-get update sudo apt-get install iceweasel

INSTALL FONTS ON RASPBERRY (MAKE SURE DIRECTORY ~/.fonts EXISTS ON PI)

scp fonts/Open_Sans/* [email protected]:/.fonts scp fonts/Source_Code_Pro/* [email protected]:/.fonts

CROSS-COMPILE GO-CODE FOR RASPBERRY PI

GOARM=6 GOARCH=arm GOOS=linux go build -o=pi-uninacht .

COPY TO RASPBERRY PI (GIVEN PI HAS ADDRESS of 192.168.2.23) (MAKE SURE THAT DIRECTORIES /home/pi/uninacht AND /home/pi/uninacht/website EXIST)

scp pi-uninacht [email protected]:/home/pi/uninacht scp config.toml [email protected]:/home/pi/uninacht scp run.sh [email protected]:/home/pi/uninacht scp ./website/* [email protected]:/home/pi/uninacht/website

CHANGE PERMISSION ON RUN SCRIPT TO MAKE IT EXECUTABLE

ssh [email protected] sudo chmod +x /home/pi/uninacht/run.sh

START UNINACHT-PROGRAM IMMEDIATELY AFTER STARTUP

ssh [email protected] sudo nano /etc/xdg/lxsession/LXDE-pi/autostart

enter the following line BEFORE the line with @xscreensaver:

@lxterminal --command "/home/pi/uninacht/run.sh"

NOTE: TO RUN ICEWEASEL VIA SSH ON THE PI-MONITOR

iceweasel --display=:0 http://localhost:8484 --fullscreen

PHYSICAL CONNECTIONS

see pin assignment on http://pi.gadgetoid.com/pinout use the physical numbers (in black) to match gobot gpio pins