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1  Forum 2005-2010 (read only) / Playground Wiki / Re: Possible addition to Solenoid page on: June 05, 2010, 11:37:54 am
Yes, please do so!
2  Forum 2005-2010 (read only) / Forum / Re: having user rating on: September 07, 2010, 09:24:46 pm
KISS method here, somebody asks a question, we discuss it. Ratings tend to be so much eye candy and add unwanted noise.
3  Forum 2005-2010 (read only) / Troubleshooting / Re: I'm getting corrupted data... please help on: August 30, 2010, 03:14:01 pm
Here's an example of interfacing a MAX232 chip for level conversion:
4  Forum 2005-2010 (read only) / Troubleshooting / Re: I'm getting corrupted data... please help on: August 29, 2010, 10:04:43 pm
RS232 Serial [ch8800] TTL Serial in regards to voltage levels.

TTL Serial is 0 to +5Vdc and is what microprocessors generally use.

RS232 Serial is nominally -15Vdc to +15V and must be level converted so it doesn't fry something.

Never assume on this stuff, or the smoke gets out  :'(
5  Forum 2005-2010 (read only) / Troubleshooting / Re: IDE won't start on win98 on: August 21, 2010, 12:46:02 pm
You will have to see if the 1.4 version of Java JRE will even run on Windows 98, then you will need to make sure the computer is upgraded to the maximum amount of memory that the motherboard will accept.

Here's the link to find older versions, I'll leave the research for system requirements up to you:
6  Forum 2005-2010 (read only) / Troubleshooting / Re: Arduino Software Won't Start on: October 06, 2009, 09:06:46 pm
Yep, you probably did...

The gcj can be eliminated, watch for it trying to uninstall stuff you want. In versions previous to 8.04, you had to specify which java you would use, once a Sun version was chosen, Synaptic would leave Open Office alone. I kind of remember looking for it in the 8.04 upgrade and finding it just worked. Once gcj was gone, the Arduino IDE functioned fine.
7  Forum 2005-2010 (read only) / Troubleshooting / Re: Arduino Software Won't Start on: October 06, 2009, 07:57:23 pm
Have you loaded the Sun Java Runtime Environment?

Sun Java Runtime (JRE, package sun-java6-jre)

For more version specific -->
8  Forum 2005-2010 (read only) / Troubleshooting / Re: Ubuntu 9.4 and Arduino on: June 27, 2009, 02:37:36 pm
On all this I include the term I really hate to hear, use, or have wielded against me  :-X -> YMMV

But then we're using Linux and Linux is mostly about experimentation and taking chances.

I'm not sure how 9.4 is laid out on the Add/Remove, but if you're using the Gnome interface, under the System dropdown menu you find the Administration submenu. The two items we're interested in are the Synaptic Packet Manager and Software Sources.

Start up Software Sources, and on the Ubuntu Software, check all the checkboxes. We're primarily interested in getting Software restricted by copyright or legal issues (Multiverse), but having them all kind of opens up your software world.

Now open Synaptic Package Manager and search for "sun java". The results window should give you sun-java6-jre, sun-java5-jre. I'm currently running the Java 6 JRE on my system for Arduino 0016. When you select it, it will also select all dependent packages for install. The Apply button finishes out the operation.

From here, things get a little hazy as I got the final stuff working late one night and don't remember all the steps, but now with Sun JRE installed, just try starting up the Arduino IDE and see what messages it gives you.

On older versions of Ubuntu, the Gnu Java has issues when loaded beside Sun Java, here's hoping that 9.4 has fixed that. On 8.04, if it gives you problems, the Arduino Playground recommends the following:

Problems Ubuntu 8.04 386

An exception like:

java.lang.ClassNotFoundException: not found in
parent=gnu.gcj.runtime.ExtensionClassLoader{urls=[], parent=null}}
   at gnu.gcj.runtime.SystemClassLoader.findClass(
   at java.lang.ClassLoader.loadClass(
   at java.lang.ClassLoader.loadClass(
   at java.lang.Class.forName(
   at javax.swing.UIManager.setLookAndFeel(

Means gcj is not working right for you. Try uninstalling it and its dependencies but keep your jre installed.
9  Forum 2005-2010 (read only) / Troubleshooting / Re: Ubuntu 9.4 and Arduino on: June 27, 2009, 12:24:25 pm
First question, do you have Sun Java Runtime Environment installed?

The native one on the Ubuntu install (gjc) had to be replaced with the Sun version on my 8.04 install, some twiddle fidget done to tell everything that this is the new version to use (so you don't end up having Open Office uninstall because of dependencies, and then remove the Ubuntu installed version (gjc).
10  Forum 2005-2010 (read only) / Troubleshooting / Re: NewSoftSerial not working under Arduino 016 on: June 08, 2009, 07:50:44 pm
Heh, not the first time something like this has bunged me up.

We need fresh installs of the Arduino IDE to set a flag that clears after the fifth startup, its purpose, to shut off the following message displayed in flaming letters 30 feet high:
11  Forum 2005-2010 (read only) / Troubleshooting / Re: Where Interrupt Routine Returns To After Execution on: May 31, 2009, 03:03:47 pm
And any global variables that are set by your interrupt service routine probably should be "volatile" as they can be changed at any time and the reentrant part needs to know this. See the page below as it better explains:
12  Forum 2005-2010 (read only) / Troubleshooting / Re: Uploading "get_sync" error on: May 04, 2009, 11:29:47 am
Here are some troubleshooting suggestions for upload failure:
13  Forum 2005-2010 (read only) / Troubleshooting / Re: Uploading "get_sync" error on: May 03, 2009, 08:32:28 pm
Not sure if this is your problem, but on a Boarduino, you need to push the reset button before beginning the code upload or you get this message.
14  Forum 2005-2010 (read only) / Troubleshooting / Re: Arduino-0012 on: December 23, 2008, 11:32:46 am
Thank you very much! I have a little experience with C programming and spent about two hours making sure all the libraries, etc. were there, but didn't quite catch on to this.

Unfortunately, the current economics killed my upgrade plans and newer versions of Ubuntu and my current computer don't play at all. You've helped me put that off until a little later.
15  Forum 2005-2010 (read only) / Troubleshooting / Arduino-0012 on: December 23, 2008, 02:13:25 am
I can run Arduino-0011 just fine. Running on Ubuntu 6.06LT

When I try running Arduino-0012, I get the following:

utility/twi.c:333: warning: return type defaults to `int'
utility/twi.c: In function `SIGNAL':
utility/twi.c:473: warning: control reaches end of non-void function

When I verify the sketch, I get the following:

/home/sean/arduino-0012/hardware/cores/arduino/WInterrupts.c:86: error: redefinition of 'SIGNAL'
/home/sean/arduino-0012/hardware/cores/arduino/WInterrupts.c:81: error: previous definition of 'SIGNAL' was here
Couldn't determine program size:

The "Couldn't determine program size:" is of course because the error is so egregious that it won't produce a .hex file and is the end result of the previous errors

What's necessary to get Arduino-0012 up and running?
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