BeagleBone Black Framework for Physiological Data Acquisition

Academic reserch project

Hardware:

• Beaglebone Black
• Accelerometer (ADXL 345)
• Air flow sensor

Software:

• Archlinux
• ic2tools (general i2c tools)
• Python (for raw sensor access)
• X11 / Openbox (for graphical display)

Data Input/Output Options:

• Serial connect (Header pin or USB serial)
• Standard HDMI video + mouse + keyboard
• SSH (text mode and graphical, through -X option) 4x ADXL345 accelerometers and 4x Analog pins.

Feature map

• CSV output to file.
• Graphical User Interface for realtime ploting.
• Dynamic DNS for easier network access
• Clean openbox right click menu
• Customize openbox right click to call functions of the system
• Linux Device Drivers for abstracted access of the hardware?
• Improve syncronization techniques of data sampling (hardware interrupt?)
• MOSH support
• GUI access over network
• Cape design, with generic connectors. (P2 ?)
• Filesystem improvements (to avoid dirty state on sequencial hard power offs)
• Automatic detection and identification of connected sensors.
• Emulated device drivers with file IO (enabling development of custom code without the actual hardware; reading from sample data file and allowing instant switch to real hardware acquisition).

Setup guide

Requirement: a linux machine to create the SDcard using this guide. Beaglebone documentation also describe how to create using Windows)

• Flash Archlinux to a sdcard: http://archlinuxarm.org/platforms/armv7/ti/beaglebone-black

• Update de system: pacman -Syu

• Install dependencies for graphical user interface (X11+Openbox):

pacman -S xorg-server
pacman -S xf86-video-omapfb
pacman -S openbox
pacman -S xorg-xinit
pacman -S xf86-video-fbdev
pacman -S xf86-video-vesa

• Start openbox: xinit /usr/bin/openbox

References

http://beagleboard.org/Support/BoneScript 
http://code.enthought.com/chaco 
http://datko.net/2013/11/03/bbb_i2c 
http://elinux.org/Beagleboard:BeagleBoneBlack 
http://learn.adafruit.com/downloads/pdf/setting-up-io-python-library-on-beaglebone-black.pdf 
http://learn.adafruit.com/setting-up-io-python-library-on-beaglebone-black/i2c 
http://letsmakerobots.com/files/userpics/u19048/B_3PinOut3.png 
http://makingaquadrotor.wordpress.com/2012/07/08/i2c-on-the-beaglebone 
http://minix-i2c.blogspot.com.br/2013/07/using-i2c-tools-with-angstrom-linux-on.html 
http://pyqwt.sourceforge.net 
http://stackoverflow.com/questions/17951155/implementing-pyqtgraph-for-live-data-graphing 
http://wiki.analog.com/resources/tools-software/linux-drivers/input-misc/adxl345 
http://wiki.openwrt.org/doc/techref/opkg 
http://www.adminempire.com/beaglebone-basics-for-arch-linux 
http://www.alfonsomartone.itb.it/mzscbb.html 
http://www.armhf.com/index.php/boards/beaglebone-black/#saucy 
http://www.elecrow.com/cooperated-designers-c-127/embedded-lab-c-127_128/easy-pulse-v11-p-837.html 
http://www.elinux.org/Beagleboard:BeagleBone_Black_FAQ 
http://www.elinux.org/Beagleboard:BoneScript 
http://www.i2cdevlib.com/devices/adxl345#source 
http://www.instructables.com/id/BeagleBone-Ubuntu-OS-LXDE-GUI/?ALLSTEPS 
http://www.michaelhleonard.com/understanding-and-using-i2c 
http://www.qcustomplot.com 
http://www.shantanubhadoria.com/article/setting-up-device-smbus-on-beaglebone-black-76 
http://www.swharden.com/blog/2013-05-08-realtime-data-plotting-in-python 
https://github.com/adafruit/adafruit-beaglebone-io-python 
https://github.com/adafruit/PyBBIO 
https://github.com/derekmolloy/beaglebone 
https://github.com/kelly/node-i2c 
https://github.com/mariobaldini/beagle-sensors 
https://github.com/rossant/galry 
https://github.com/timbit123/ADXL345 
https://github.com/zlalanne/node-serial-gui 
https://groups.google.com/forum/#!topic/beagleboard/YctTkwyFc8g 
https://lkml.org/lkml/2009/7/1/436 
https://www.youtube.com/watch?v=8C2zk6B-eLU 

Authors:

• Mario Baldini mario.baldini@ieee.org
• Joao Baggio jbaggio@gmail.com
• Raimes Moraes raimes@eel.ufsc.br