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1  Using Arduino / Programming Questions / Re: Java Applet - Arduino Web Server on: October 01, 2012, 05:44:12 pm
I don't have a strong understanding of how browsers work but what you said made a least some sense to me. I'll look into it a bit more and see where I get to.

Thanks a lot,

2  Using Arduino / Programming Questions / Re: Java Applet - Arduino Web Server on: October 01, 2012, 05:11:51 pm
I haven't got a specific idea for the applet, I just want to understand how it would be done so that I can play around with it. If I were to save the .CLASS ByteCode file in the home directory of the SD card, would the HTML code be able to access it directly?

3  Using Arduino / Programming Questions / Java Applet - Arduino Web Server on: October 01, 2012, 11:53:26 am

I'm fairly new to using arduinos so bare with me. Basically I want to use an Arduino Uno with an ethernet shield to run a web server that can serve Java applets. I have been able to set up a web server running plain HTML and I know how to create/implement a Java applet on a standard web server. However I'm not too sure how I would combine the two so that when someone connects to the arduino, they will load the Java applet.

I understand that Arduino is programmed in C++ and that using the Web libraries you can implement HTML, however the HTML code would need to call a .CLASS file stored somewhere on the arduino. I'm assuming the easiest way to store this .CLASS file would be on the MicroSD card (on the Ethernet shield), but I'm not to sure how that would work. There's no reason why this shouldn't be possible seeing as all the Java Applet is is just a ByteCode file which isn't handled by the Arduino but rather by the JVM on the client machine.

I have had a quick look into how to use and SD cards using the SDfatLib but I don't know if that would be enough to access the .CLASS file.

Any advice would be greatly appreciated,

4  Using Arduino / Project Guidance / Re: Internet Controlled Robotic Arm on: August 30, 2012, 06:07:32 pm
I'm using the Adafruit Motor Shield,

Which does indeed use the same pin 10 for SS. Is it possible to clip off this pin on the Motor shield and rewire it to another... except there are no free PWM pins left. I have a Mega as well, but then MISO,MOSI,SS pins are in completely different places and then both shields would need to be rewired...

Any suggestions?

5  Using Arduino / Project Guidance / Internet Controlled Robotic Arm on: August 30, 2012, 02:05:16 pm
Hi Arduino Community,

Last month I completed building my arduino controlled OWI robotic arm which is pretty cool, but the next step I would like to take is to be able to control it over the internet, and possibly included a webcam so anyone can connect to my server and control the arm. But first things first, I need to be able to work it myself.

I've been playing the an ethernet shield that I bought and it seems pretty simple, now I was wondering whether it would be possible for a single arduino to control both a motor shield and an ethernet shield. I looked up the pin usage from and the only pins (excluding SD) that they share are MISO, MOSI and SS. Now I only know a little about how these work but I get the impression that you should be able to have multiple 'slaves' connected to the one 'master', the arduino.

Any help would be appreciated. If I do get it working then I'll post the IP address on these forums so people can have a little play, that should freak out my lil brother smiley

Thanks guys,

6  Using Arduino / Project Guidance / Re: Sony Ericsson T68i Data Cable - Where to cut? on: August 19, 2012, 02:54:05 pm
I've never used USB with the Arduino but from what I've heard its more complicated. How would I access the RX/TX from the USB D+ and D-?
7  Using Arduino / Project Guidance / Sony Ericsson T68i Data Cable - Where to cut? on: August 19, 2012, 12:31:44 pm

I was hoping someone could clear something up for me. I've bought a Sony Ericsson T68i so that I can send/receive SMS with the Arduino. I've also bought the USB data cable which I plan to cut and separate the wires to directly connect the RX/TX. However on the cable itself are two casings, one near each end.

Now I understand that there is some signal conversion going on somewhere because the computer would want to operate using RS-232 and the Arduino needs to be using TTL, but I'm not really sure where about the conversion(s) is/are taking place.

There is also a small circuit board inside the plug that goes into the T68i, I am assuming that the conversion happens here but then I really don't know what the other two casings are for. A picture of the cable can be found here:

Where do I want to cut the wire in order for the signals to work.


8  Community / Products and Services / Re: Official Arduino Wifi Shield on: August 16, 2012, 04:46:09 pm
Ha, ouch!

Well if it makes you feel any better, postage to the UK is still 25 euros!
9  Community / Products and Services / Official Arduino Wifi Shield on: August 13, 2012, 03:28:54 pm
Hi People,

I know that there's been talk about the Official Arduino Wifi shield in the past - it was announced almost a year ago:

However I noticed today that the shield has appeared on the Arduino website's /Hardware list. I'm pretty sure it wasn't there a few days ago, which leads me to think that it may be near(er) to being made available.

I for one would love to get my hands on one and I'm sure you guys would to. Does anyone know anything more about it, or is it me just being stupid...

Comments appreciated.


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