I recently bought a Rainbowduino V3.0b but am finding it impossible to program using the Arduino IDE (1.0). Every time I try to upload a sketch I get the following error: avrdude: stk500_getsync(): not in sync: resp=0x00
If I hold shift and hit upload I receive: avrdude: usbdev_open(): did not find any USB device "usb"
I am using COM port 10 and have selected the board Arduino Duemilanove with a 328 processor.
I grabbed an ISP and re-burned the Arduino bootloader but am still having the same exact problem while trying to upload the sample sketches provided in the library. I have however successfully uploaded code one time (before I re-burned) but I had done nothing different and it just worked by chance it seems. When I try to upload anything the reset light blinks followed by the Rx pin and then I get the failed message from avrdude.
I have nothing connected currently to the board and have tried multiple cables as well as trying different COM ports and re-installing the FTDI drivers. I have been trying for a few days to get this working and have looked all over the net but haven't found anything helpful yet.
Thank you for any help!