No uploads to Arduino UNO R3 on Mac OSX 10.7.5 (programmer is not responding)

I got my first Arduino today and unfortunately have not been able to upload anything through the Arduino software.

  • It's an Arduino UNO R3 (ATMEGA328P-PU)
  • I'm on Mac OSX 10.7.5 (on a Macbook Air)

When I connect the Arduino to a USB port the ON-led starts burning red and the L-led starts blinking slowly (after three short blinks).
When I try to upload a programme this same sequence of blinking on the L-led start (I believe it's a reset?). Also both the TX-led and the RX-led start blinking green, the one after the other, for a short period of time together, then they turn off.
I get this error message on every attempt:

Binary sketch size: 466 bytes (of a 32,256 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 -carduino -P/dev/tty.usbmodemfa131 -b115200 -D -Uflash:w:/var/folders/tm/8sr726h54svgvxsrd0mv81s80000gn/T/build8031375796420734825.tmp/BareMinimum2.cpp.hex:i 

avrdude: Version 5.11, compiled on Sep  2 2011 at 18:52:52
         Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/
         Copyright (c) 2007-2009 Joerg Wunsch

         System wide configuration file is "/Applications/Arduino.app/Contents/Resources/Java/hardware/tools/avr/etc/avrdude.conf"
         User configuration file is "/Users/erwinelling/.avrduderc"
         User configuration file does not exist or is not a regular file, skipping

         Using Port                    : /dev/tty.usbmodemfa131
         Using Programmer              : arduino
         Overriding Baud Rate          : 115200
avrdude: Send: 0 [30]   [20] 
avrdude: Send: 0 [30]   [20] 
avrdude: Send: 0 [30]   [20] 
avrdude: ser_recv(): programmer is not responding
avrdude: stk500_recv(): programmer is not responding

avrdude done.  Thank you.

I have chosen the right board (Arduino Uno) and the right port (/dev/tty.usbmodemfa131) from the tools menu.
I started out with a simple test circuit on a breadboard and a simple programme. Without anything connected to the Arduino and with the Bare Minimum example results are the same.
I went through the Troubleshooting Guide.
I also tried from a Windows laptop, but wasn't able to select COM ports in the Arduino app, so I stopped that attempt.
I've Googled for several hours and spent some time searching the forums, but don't know what I should do next. I did find some stories of missing bootloaders, but believe the blinking L-led indicates that's not the case? I also found stories of "broken" Arduino's that were returned, but would like to rule out other possibilities first.

I hope someone is able to help me out. Any ideas on what to do or try?

Does the loopback test work?
http://forum.arduino.cc/index.php?topic=73748.0

Thanks Louis, I tried the loopback test now. I think it failed, but I'm not sure:

An empty screen opens when I connect to the Arduino from Terminal like this:

screen /dev/tty.usbmodemfa131 9600

On every keystroke the RX-led and the TX-led blink green. Nothing is echo'd in the Terminal window, all I see is the cursor.

And you have RX/TX jumpered and you have the RESET/GND jumpered?

If so and you are not getting anything echoed back, then that is a problem.

I would try a different USB cable.

The loopback is trying to verify you have good USB to Serial communication, until that works, you will not be able to upload anything.

It turned out to be the USB cable indeed. I've got my first blinking led now :slight_smile: Thanks so much Louis!