Hello Group,
I bought an UNO to learn with. After some difficulty, I got it to play with my office machine (Windows XP Pro) and successfully loaded "Blink" and a few modifications of "Blink".
I have not been able to make it work with my MacBook running 10.4.11. The Arduino is recognized and listed in the USB device tree as "Arduino Uno". When I unplug the cable and refresh the USB tree, it is not listed. When pluged back in, it re-appears normally.
The LED is blinking as per the modified sketch I uploaded while connected to my office PC.
The board is selected as "Arduino UNO" in the Arduino window (Is this what people refer to as the IDE?)
The serial port is listed as "/dev/tty.usbmodem0000103DI"
Every time I try to upload a sketch I get the message:
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_recv(): programmer is not responding
I have tried the various combinations of reset buttons, unplugging, etc that I read about while searching within the forum. Can anybody tell me if Arduino will work with OSX 10.4.11?
Thanks in advance for any help you can provide.

