I received my Arduino Uno R2 last week and had a lot of fun with it for a week. I managed to upload example programs and a few iterations of mine. But I am now running into the following problem during upload:
Binary sketch size: 1234 bytes (of a 32256 byte maximum) /Applications/Arduino.app/Contents/Resources/Java/hardware/tools/avr/bin/avrdude -C/Applications/Arduino.app/Contents/Resources/Java/hardware/tools/avr/etc/avrdude.conf -v -v -v -v -patmega328p -cstk500v1 -P/dev/tty.usbmodem1a21 -b115200 -D -Uflash:w:/var/folders/Af/Af-1viEqGm4n46QB-u+RZU+++TM/-Tmp-/build6342882153532595566.tmp/Test_fan.cpp.hex:i
avrdude: Version 5.4-arduino, compiled on Oct 9 2007 at 11:20:31 Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/
System wide configuration file is "/Applications/Arduino.app/Contents/Resources/Java/hardware/tools/avr/etc/avrdude.conf" User configuration file is "/Users/julie/.avrduderc" User configuration file does not exist or is not a regular file, skipping
Using Port : /dev/tty.usbmodem1a21 Using Programmer : stk500v1 Overriding Baud Rate : 115200 avrdude: Send: 0   avrdude: Send: 0   avrdude: Send: 0   avrdude: ser_recv(): programmer is not responding avrdude: stk500_recv(): programmer is not responding avrdude: Send: Q   avrdude: ser_recv(): programmer is not responding avrdude: stk500_recv(): programmer is not responding
My config is a imac running mac osX 10.5.8, I have the IDE 00022. I read the troubleshooting faq and googled for other posts for a couple hours. I checked the board used and the serial port in the IDE. I tried resetting manually and changing the port from from tty to cu. I tried with another computer (iMac laptop) and tested the cable with a printer (printed fine). I inspected the board closely and cannot find any traces of burnt components. When connected to USB, the pwr led is on and Led L flashes a few times just after connecting (so I guess I still have a bootloader). When connected to USB or power the previously uploaded sketch runs normally (varying pwm output on pins 9 10 and 11; cycling through colors on a RGB led) When uploading, neither the Rx or Tx leds flash...
Are there any other diagnostic tests I can carry? What would you suggest I do as the next step? Is there a customer support or warranty for official cards?
Thanks for your help,