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Topic: Road to solve the delay on the Arduino IDE (Read 111128 times) previous topic - next topic


Jan 16, 2010, 10:17 pm Last Edit: Jan 16, 2010, 10:20 pm by TBAr Reason: 1
I would try this fix, but cannot open the rar file.
Can anybody give me a hint, how to open this file


Also, from http://en.wikipedia.org/wiki/Rar#Software:

Third party programs that can only read (unpack) RAR files include: WinZip (Windows), 7-Zip (multiplatform), IZArc (Windows), PeaZip (Windows, Linux), Zipeg (Windows, Mac OS X), ALZip (Windows), along with the free version of unrar (which is available for Linux and FreeBSD). Mac OS X readers include Stuffit Expander, The Unarchiver and Zipeg. Stuffit Expander is also available for Mac OS Classic with RAR support for this platform.

If you go to the second link above, all those third party programs have their own links. I'm too lazy on a Saturday to copy the links into this reply.  ;)


My fixed dll is still working with the version 0018 :) and of course for those who asked, with the 0017 too.  ;D
My website: http://ried.cl


Another big thanks for fixing this problem.  I have an older laptop running XP, and the arduino application was completely unusable due to the delays in the 0018 distribution DLL.

Your modified DLL fixed the entire problem, instantly.  8-)



Dear eried,

Please could I have the source code to your modified version of the rxtx library?




I will try to look for it. But you can build your own patched version. First look the point 7 of this document, ignore the text, just copy the "serial_test" function code.

Then get the full source from http://users.frii.com/jarvi/rxtx/

And finally, replace the code and Compile.
My website: http://ried.cl


Sep 05, 2010, 02:28 am Last Edit: Sep 05, 2010, 06:04 am by johnnydc Reason: 1
Works for me using Arduino 0019!

Thank you so much, eried! You've done us all a great favor! Nice work!


Yet another very happy user, thanks a lot!

The fix - It works with Processing too, btw.

I am trying to get a link to this fix included in the

.. I hope this will be possible. I remembered seeing this solution long time ago, but I had trouble refinding it.

More links to this genious :-)

with humble respect
Christian Liljedahl


I have same problem.
This is very fantastic solution.

Many thanks!!!


Hey all, i just got my UNO yesterday and noticed the delay on the IDE soft and i can tell that this fix worked for the 0021, too(i had BT com port working on my laptop). thanks!  :)


This helped me a lot!!! Thank you very much!!!

//Arduino UNO - 021 - Win7


gracias por el archivo! ha mejorado la respuesta del programa muy mucho!

thanks for the great job done! I had the same problem in Processing (as they share the same platform) and also solved it.


:)  Luckily I found this thread.

Eried, thank you for this fix; extremely helpful. Turned an almost unusable program into a valuable tool.

works as well with Arduino 022.




Hello Mr ERied.

I have the same problem with the slow Arduino IDE.  I'm new at this and don't yet know Java.  When I look at the Arduino\Lib directory there are only *.jar files.  I do not know what to do with your *.rar file.  Could you please give more detailed instructions for us Java newbies.  Gracias in advance.


My bad.  I downloaded 7-zip to unzip your *rar file and replaced the rxtxSerial.dll iin the Arduino directory.
However, there seems to be no change in the excessive compile time using the arduino IDE.  I am using windows 8.1.  Any thoughts and suggestions?


In addition to using Mr. Ried's solution, I had to turn off Spybot's live protection.  Now all is well!! 
Thank you again Mr. E. Ried!!

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