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181  Using Arduino / Networking, Protocols, and Devices / Re: Which Xbee??? on: September 19, 2011, 05:29:03 am
Hi I am currently playing with the XBEE Pro ZB that you are talking about  You can get great range on the things as long as you use an external antennae.
For an RC plane I would recommend possibly mounting a U.Fl one under the fuselage under a plastic cover of some sort to get the best range, just make sure its sealed well to prevent fuel damage.


http://uk.farnell.com/pulse-engineering/w3525b100/antenna-pcb-2-4ghz-ipex/dp/1900064
182  Using Arduino / Networking, Protocols, and Devices / Re: EthernetDHCP.begin on: September 15, 2011, 07:09:50 am
Hey
Basically unless an ethernet cable is plugged in to the device so that it can get an IP address it will not make it to the loop.
183  Using Arduino / Networking, Protocols, and Devices / EthernetDHCP.begin on: September 11, 2011, 03:59:27 pm
Is there a way to allow the Arduino to continue even if it is not plugged into a router so cannot receive its DHCP data?
184  Using Arduino / General Electronics / Re: Barometer / Humidity / Temperature Shield on: July 30, 2011, 07:45:52 am
Instead of making a shield you can do the same thing with an SHT21 and a BMP085 that way you get 2 temperature readings and you can get your code to take an average of the two for better precision
185  Using Arduino / General Electronics / Re: i2c temperaturesensor on: July 30, 2011, 07:35:31 am
I am currently using SHT21 sensors for my project

they are however incredibly small so kind of a pain to solder but they give humidity readings and the temperature in Celsius and Fahrenheit.  I think they are about £10 a pop.
186  Using Arduino / Networking, Protocols, and Devices / Re: Sending Data to Server via UDP on: July 29, 2011, 06:49:11 pm
the problem i am having is that the get humidty and temperature are all floats
187  Using Arduino / Networking, Protocols, and Devices / Re: Sending Data to Server via UDP on: July 29, 2011, 05:12:46 pm
sorry guys im having some problems working out how to that.
im trying to get  mac, unixTime, temp, humidity  in that order in.

I can't work out how to convert everything into the right formats and get the unix time out
188  Using Arduino / Networking, Protocols, and Devices / Re: Sending Data to Server via UDP on: July 29, 2011, 09:59:40 am
oh ok
so if i were to place GetHumidity within the packet definition would that be a string or int? same for get temp
thanks
189  Using Arduino / Networking, Protocols, and Devices / Re: Sending Data to Server via UDP on: July 29, 2011, 08:29:34 am
so if I want to send the humidity.GetHumidity() and humidity.GetTemperatureC() as well as sending the current MAC address and the unix time I have just received all in one packet what would the structure of that section be?

Also is it possible to have it work out the packet size itself?


Thanks for the fast reply
190  Using Arduino / Networking, Protocols, and Devices / Sending Data to Server via UDP on: July 28, 2011, 06:45:45 pm
Hi
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