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1  Development / Other Software Development / Ethernet Library Online Documentation Inconsistant on: January 01, 2012, 06:59:36 am
Yesterday I had a late night updating a sketch using EthernetClient to Arduino version 1.0 - I couldn't get it to connect as I was following the online version of the Ethernet Library documentation which seems to be a mixture of old and new syntax, for example this page shows how to instantiate an EthernetClient http://arduino.cc/en/Reference/EthernetClient but contains a reference to the old client.connect() method which has no parameters http://arduino.cc/en/Reference/ClientConnect. There are also other confusing links in the Ethernet library pages.

I managed to get everything working in the end by following the local documentation included with download which seems to be consistent.

It looks like the online version needs bringing inline with the bundled docs or the version differences need pointing out so it's clearer.

I really like being able to use DNS and DHCP so easily smiley smiley
2  Using Arduino / Programming Questions / Re: Xbee interface on: December 30, 2011, 02:49:35 am
ZigBee is a really cool standard and the best advice I can give you is to read this book - Building Wireless Sensor Networks with ZigBee, XBee, Arduino, and Processing - published by O'Reilly - it contains most of what you will need to know to get started, including command and API modes with hardware and code examples.
http://shop.oreilly.com/product/9780596807740.do
3  Using Arduino / General Electronics / Re: Relay on: December 27, 2011, 04:14:19 am
This is the SPDT (Single Pole, Double Throw) relay I've been using in 5V low power projects recently - by connecting to either side of the relay the switch can be either open or closed - it's an RS part but you can get similar parts from lots of suppliers ( 3V versions are also available )
http://uk.rs-online.com/web/p/electromechanical-relays/0476757/
4  Community / Exhibition / Gallery / Re: Arduino / Zigbee dancing & singing meerkat e-mail notifer on: December 23, 2011, 02:25:45 pm
Yes, that was you - I've got Sergei here at home with me now so I'll keep him online until we go to bed here in the UK - I don't want him singing all through the night!
5  Community / Exhibition / Gallery / Re: Arduino / Zigbee dancing & singing meerkat e-mail notifer on: December 23, 2011, 01:57:11 pm
Due to popular demand, here's the livefeed - you may have to wait up to 1 min for Sergei to activate
http://livestre.am/1c3cE
6  Community / Exhibition / Gallery / Arduino / Zigbee dancing & singing meerkat e-mail notifer on: December 23, 2011, 08:55:01 am
We've been having some Christmas fun at work with Sergei the dancing and singing meerkat http://www.designspark.com/content/merry-christmas-sergei-arduino-singing-meerkat

I hooked up an Arduino / XBee base station to a python script which poles the gmail atom feed and fetches the number of unread emails - if the count increases it sends a signal to the remote transceiver triggering a relay starting Sergei's dancing and singing routine.

Sergei moves around our office here singing and dancing Jingle Bells every time he receives a new email. So far he has received emails from as far away as France, Germany, New Zealand, South Africa and he dances and sings his heart out each time he receives one. 

sergeithesingingmeerkat@gmail.com
7  Community / Exhibition / Gallery / Pachube Arduino Finite State Machine Web Client on: May 26, 2011, 04:28:15 pm
I created this project to help me understand in greater depth how to make reliable communications using HTTP protocol. The code is easy to extend for other networking projects and it is very resilient to network errors. All the details are shown on DesignSpark

http://www.designspark.com/content/pachube-making-reliable-connections-arduino

I also discovered LTSA a great tool for systematically analysing state machines

http://www.doc.ic.ac.uk/ltsa/

-arduinomstr
8  Community / Exhibition / Gallery / Re: Juissi's Tanganyika Aquarium on: May 26, 2011, 04:05:58 pm
Great project - I love the way you've integrated all the different technologies into your site - the fishes sense of humour made me smile

arduinomstr
9  Community / Exhibition / Gallery / Re: My Arduino Web Server v2.0 on: April 08, 2011, 04:06:10 pm
Try using a different browser - I usually use Firefox on Linux and was getting "The connection to the server was reset while the page was loading."

Just downloaded Chromium and the page loads fine! smiley Seems like a Firefox problem.
10  Using Arduino / Sensors / Re: DS18B20's powered by shift reg? on: February 05, 2011, 10:46:43 am
I'm not really clear on your hardware set-up but can't you plug each sensor into a port, run the one wire sample sketch and get the address of the sensor on that port? You communicate with the devices on the bus by their address rather than any position on the bus.
11  Forum 2005-2010 (read only) / Troubleshooting / Re: Online Thermometer with Pachube feed, HELP! on: January 09, 2011, 04:49:18 pm
Basically the pachube_in_out() function handles sending and receiving feed data. You need to build a string from your sensor data and reference this within the function. If you have a look at this thread http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1293217061/4#4 you can see how I did it - I pass each sensor reading in like this
Code:
pachube_data = String(convertReading(temp_0));
I'm not receiving any data in this code

Hope it helps you
12  Forum 2005-2010 (read only) / Troubleshooting / Re: DS1820+Ethernet problem on: December 25, 2010, 03:01:04 pm
Try connecting it up to Pachube http://www.pachube.com/ - it's got a nice api to make life easy

Here's my feed - http://www.pachube.com/feeds/14134
13  Forum 2005-2010 (read only) / Troubleshooting / Re: Frozen on Pachube on: November 30, 2010, 06:03:31 pm
You can also test that your feed is updating properly with curl http://community.pachube.com/?q=node/9#commandline
14  Forum 2005-2010 (read only) / Troubleshooting / Re: Frozen on Pachube on: November 30, 2010, 08:36:08 am
Are you hitting the update rate limit on pachube? http://api.pachube.com/#rate-limit

Can you add some print statements to see if your sketch is working correctly and still producing output?

Is your router dropping out?
15  Forum 2005-2010 (read only) / Bugs & Suggestions / Reference - Ethernet Server.available() on: October 21, 2010, 12:29:30 pm
http://arduino.cc/en/Reference/ServerAvailable

I think that Server.available() should return a Client object - documentation says it returns none
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