Hi,

Just read the Raspberry Pi thread - looking really good.

In the post this morning I got my CISECO EVE http://www.kickstarter.com/projects/ciseco/eve-alpha-raspberry-pi-wireless-development-hardwa which plugs onto the Raspi to give you wireless options a-plenty. I havn't tried it yet but perhaps over the coming hols. Dealing with Linux might take some getting used to but all good fun learning.

At the moment I'm using SolderCore which is a real treat and so much more robust than my previous Arduino based get up: http://www.airsensor.co.uk/component/zoo/item/soldercore-co2-shield-to-cosm-sd-card.html

The code it written in BASIC and is sweetly short/easy to read :-).... all good fun.

hmmmm, maybe I will stick with SolderCore after all - Raspi may just be too complex for data logging? - it took me no time at all to get SolderCore running and it will boot the script after a power fail just like arduino. The other nice thing, although I haven't tried it, is that you can connect to the SolderCore from afar to update firware etc - ideal when its half way across the country :-)

SteamyTea - I have a Pi operating over a wireless network at the moment.

Are you trying to connect via a hardwired network, or a wireless network ?

There's a guide to using a hardwired network here http://www.raspberryshake.com/raspberry-pistatic-ip-address/
Getting wireless to work usually involves installing a driver for which-ever dongle you choose. I went for the TP-Link TL-WN725N.

With wireless, I had write an additional script to start the network running because the Pi stops its wireless network connection when the router is switched off. The script runs every hour-or-so to restart the wireless services in the hope that the router has been switched back on.

Let me know if you need any specific advice on getting the Pi to talk to the network.

G.

All this raspberrypi talk really makes me want mine.

Hopefully within the next week. I'm going for a hard wired solution over twisted pair cat5e as the components are cheap.

If u do consider wireless go look at enoceanpi I've specified their products through work and their very good. They use various forms of technology for wireless that has no batteries, like kinetic energy and PV.

Posted By: MackersIf u do consider wireless go look at enoceanpi

Ooh! Shiny! Thanks for that. I want one.

Reality bites ... what are prices like for the Enocean devices themselves, these days?

Hi SteamyTea.

This is my bash script which is called from crontab once an hour. It checks for the presence of the wireless network and attempts to start the service only if it has stopped.

#!/bin/bash
#
# If the network is down, try to restart it
#

packets=`ping 192.168.0.1 -c 1 | grep -ic "1 received"`
#echo "${packets} packet(s) recevied from pinging 192.168.0.1"

if [ "${packets}" == "0" ]; then

# network is or was down
#echo "Attempting to restart the network"

cd /etc/init.d
sudo ./networking stop >>/dev/null
sleep 5
sudo ./networking start >>/dev/null

fi

The serial cable came from Amazon "Pi RS232 cable Raspberry Pi Pi Console cable", but it needed a "gender changer" to plug into the Dylos.

G.

Posted By: gareeThere's a guide to using a hardwired network

You will only need this if you are not using DHCP whether it is wired or wireless.

Hi borpin.

All the logging is done locally on the Pi. The only thing I use the WiFi for is a weekly ftp session to transfer the log files to a PC.

What I need now is an easy way to convert csv files from the Dylos, into daily graphs.

Gary.

Posted By: gareeWhat I need now is an easy way to convert csv files from the Dylos, into daily graphs.

Excel or LibreOffice. There is also GNUPlot. I think that Google have some web enables charting software too.

Thanks for your replies.

Sprocket - I did look at GNUplot and it almost does the job, but the axis labels graph becomes quite messy with a whole day's worth of data from the Dylos (one reading every minute). I couldn't figure out how to reduce the number of labels on an axis. Even averaging the readings into 15 minute intervals didn't reduce the clutter.

I have OpenOffice installed at home, and Excel at work. I did plot a graph with these, but it took quite a bit of manual labour. I'd like to be able to automate the production of the graphs.

I'm open to other suggestions - or even some expertise with GNUplot :-)

The GNUplot config file I was using as a template is...
set terminal png
set datafile separator ','
set key autotitle columnhead
set output "DayFiles\Hours_040613.png"
set xlabel "Time"
set ylabel "Particle Count per cubic foot"
set title "6th April 2013"
set xtics nomirror rotate by -90
plot "DayFiles\\Hours_040613.csv" using 1:2 with lines, "" using 1:3 with lines, "" using 1:xticlabels(1)

Gary.