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61  Using Arduino / Installation & Troubleshooting / Re: Leonardo on OSX - not in sync when uploading on: May 22, 2012, 11:36:32 am
Hmm, weird.  Is the TX LED lighting up before the L LED starts pulsing?  That would be strange because, as you guessed, the pulsing indicates that the bootloader is running.

Can you turn on verbose upload (in the Preferences dialog) and post the output of an unsuccessful upload?
62  Using Arduino / Installation & Troubleshooting / Re: Leonardo on OSX - not in sync when uploading on: May 22, 2012, 09:45:12 am
FalconFour: what operating system are you on?  Do you see the RX and TX LEDs on the board flash when you try to upload?

Also, with the Leonardo, if you're going to use the reset button, you want to release it after the upload starts (after the IDE says "uploading..."). 
63  Using Arduino / Installation & Troubleshooting / Re: Leonardo on OSX - not in sync when uploading on: May 21, 2012, 11:17:06 am
The Leonardo will be supported by the Arduino 1.0.1 software, which I'm in the process of building and releasing.  It should be up in a couple of hours.  (If it takes longer than that, it will have to wait until late tonight, because I'm flying back to Boston from Maker Faire this afternoon.)

The bootloader (and other details) of the Leonardo support in 1.0 have changed for the final Leonardo release.  The Leonardo won't work with 1.0.  I'll try to have 1.0.1 up ASAP!
64  Using Arduino / Microcontrollers / Re: ATtiny84 and TinyDebugSerial shows garbled text.... on: May 16, 2012, 02:31:30 pm
Are you using an external clock with the ATtiny?  The internal clock is not always accurate enough for serial communication, even at low baud rates. 

Also, the SoftwareSerial library in Arduino 1.0 will work on the ATtiny, assuming you're running at 8 or 16 MHz (not 1 MHz).  In case you want to try a different serial library.
65  Using Arduino / Installation & Troubleshooting / Re: Mega 2560 bootloader revised? on: May 11, 2012, 08:07:52 am
We're working on testing the bootloader here: (there's a .hex file in goodHexFiles).  It fixes the !!! problem and watchdog problem, along with a few other bugs - all corrected by Mark Sproul.

I've seen occasional failures to upload with this new bootloader, but I'm having trouble reproducing them.  Any testing of this bootloader would be a big help, particularly on big sketches. 
66  Using Arduino / Installation & Troubleshooting / Re: Arduino UNO rev3 connection problems on: May 09, 2012, 11:02:10 am
Did you try the troubleshooting guide?
67  Development / Suggestions for the Arduino Project / Re: Documentation bug - size of serial buffer on: May 08, 2012, 10:06:30 am
I fixed it.
68  Development / Suggestions for the Arduino Project / Re: BYTE type definition in Print library (Arduino 1.0) on: April 11, 2012, 09:02:32 am
Also, Serial.write() will work in 0022 / 0023 (and earlier, too, I think) so it shouldn't present compatibility problems to switch.
69  Using Arduino / Installation & Troubleshooting / Re: Arduino Crashes on Mac OS X 10.7.3 (lion) when uploading to Uno on: April 09, 2012, 08:45:50 am
Weird, I've never seen this before.  What serial ports do you have?

Are you running any software (possibly in the background) that might be looking for serial ports (e.g. anything involving syncing with a cellphone, or using a USB cellular internet dongle, or bluetooth communication)? 

Does it crash when you compile (verify) but not upload? 
70  Using Arduino / Installation & Troubleshooting / Re: Arduino IDE 1.0 On Linux Mint 12 on: April 09, 2012, 08:23:20 am
It looks like the problem is with this line in the "arduino" launch script:

APPDIR="$(dirname -- $(readlink -f -- "${0}") )"

This is supposed to figure out what directory the arduino software is in, even if the "arduino" script is a symbolic link.  It looks like readlink isn't returning something that dirname can handle.  Anyone have an idea of how to change it?  I'd suggest posting follow-ups on the Google Code issue list ( so they don't get lost.
71  Development / Suggestions for the Arduino Project / Second release candidate of Arduino 1.0.1 now available. on: April 08, 2012, 06:33:22 pm
I just uploaded the second release candidate of Arduino 1.0.1:

Mac OS X:
Linux (32-bit):
Linux (64-bit):

Please try it out and report any problems, either on the developers mailing list ( or the Google Code issue list (  I don't check the forums often, so I might miss problems reported here.

The main change from the first release candidate is the inclusion of more translations (~16 total) and the addition of a preference for selecting your desired language.  Note that in Windows and some versions of Linux, the default language is based on the locale selected for the formatting of dates, times, and currencies instead of the language that your operating system shows up in.  You can change the language selection in the preferences dialog box.

If you're interested in helping out with the translation process, see:  Comments about the translations themselves should be discussed on the translations mailing list,  Suggestions about the internationalization process itself should be reported here or the Google Code list. 

Thanks to everyone that contributed to the translation process!

Other things to try out include:

* Ethernet library fix for avr-gcc 4.5.1

* ArduinoISP sketch fix

* New Ethernet.maintain() function for renewing DHCP leases.

* Accuracy of pulseIn() results.

* Behavior of the updated find and replace dialog.

* The fact that only changed files are recompiled.

* Uploading with verification turned off.

* Ability to generate repeated start requests in the Wire library.

* Receipt of multiple UDP packets.
72  Development / Suggestions for the Arduino Project / Re: Patched ArduinoISP that works with 0022, 1.0 and 1.0.1RC1 on: April 08, 2012, 06:30:18 pm
The updated patch (which wasn't in the 1.0.1rc1) is also at 19200 baud.
73  Development / Suggestions for the Arduino Project / Re: Patched ArduinoISP that works with 0022, 1.0 and 1.0.1RC1 on: April 08, 2012, 04:23:03 pm
There's a fix in already for 1.0.1.  The patch from WestFW is slightly nicer, but either seems to work.
74  Development / Other Software Development / Re: An alternative Serial Library for Arduino 1.0 on: April 01, 2012, 09:46:13 am
Are there optimizations here that we should be incorporating into the default Serial library?  If so, please open a Google Code issue for them so I know to incorporate them.
75  Using Arduino / Installation & Troubleshooting / Re: windows7 x64 cant upload to arduino mega on: April 01, 2012, 09:36:23 am
Is this the current Arduino Mega (i.e. with ATmega2560)?  If so, you don't need the FTDI drivers (the Mega 2560 doesn't use the FTDI chip).  Instead you have to point Windows to the .inf file in the drivers/ directory of the Arduino software.
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