#PROJECT DESCRIPTION:

This project consists of two parts.

It's designed to be deployed on a Raspberry Pi.

Part 2: Perl scripts that auto-configures the networking, and ranks every connected device via an zero config, Avahi scheme. A master will be selected logically by comparing MAC addresses.

Part1: A data grapper(C++), that graps data from a USBDUX device, and places it in a cirular buffer. The user can take snapshots of the buffer via a named pipe.

#PART 1:

##NOTES:

###Rasberry Pi:

• External 2.5" drive need external power supply - needs to be tested more thoroughly.
• The Pi can't allways boot with external drive attached, so it needs to be attached post boot.
• SD card controller apparently use the USB bus bandwidth, which can cause problems with loading data to both an external USB drive and SD card during sampling above 1.5[Mz].
• Ethernet controller also uses the USB bus.

##TESTING RESULTS:

###Test 1:

First soak test, to test stability of the system under maximum load.

####Parameters:

Open lid.
18[hours] continous 3[Mhz] sampling.
5.30[hour.min] contigous 20[s] snapshots to external 3.5" drive (900Gb).

####Result:

Pass

###Test 2:

Second test is a closed lid temperature test, on 100 snapshots and continous sample.

####Parameters:

Closed lid.
100 115[MB] contigous snapshots.

####Result:

Min SOC temperature 69C (Start)
Max SOC temperature 75C (End)
Pass

#Author

Soeren V. Joergensen, svjo@mmmi.sdu.dk John Hallam.

MMMI, University of Sourthern Denmark.