Windows: I have finally gotten the Arduino USB board running using the ATmega168 with the test LED program. Now, however, I have noticed something strange. The program runs fine when connected to the USB port, but in standalone mode (without the USB cable connected) the program doesn't start. These are the indications I see:
USB power: With reset (or not) the pin-13 LED flashed a couple of times and the program starts blinking pin-13 LED after 8-10 seconds. Good! EXT power: With reset (or not) the pin-13 LED flashed a couple of times when power is applied, but the program (LED blinking) never starts. Both cases: PWR indicator lights just fine. External power 9-12v at ~50 mA.
The only difference I notice is when the USB cable is connected, the TX/RX lights flash a couple of times on power up, and the program runs, regardless of power source.
Does this mean the Arduino board must be connected at all times for ANY PROGRAM TO RUN??? This is not very useful, if the board must remain connected to a computer to function. Advice? Possible causes?
Linux: Separate issue. The Arduino program opens with the open file dialog, shows folders. I can navigate through the folders, but ONLY folders are shown. No files at all. This is perplexing, to say the least. OS is Fedora Core 6 with the same indications on both a 32-bit system and a 64-bit system. This may be operator headspace, but I thought I would see if anyone had experienced this, or what am I doing wrong? Thanks in advance for any input.