I’m struggling to upload the firmware to Rainbowduino.
I’ve tried with an Arduino UNO, following the instructions on the wiki, and I’ve tried using one of these - http://www.coolcomponents.co.uk/catalog/product_info.php?products_id=356.
The usb to serial cable definitely works because I can use it to program the arduino UNO successfully. And I don’t get why it wouldn’t work with the RD when connected in the same way.
The RD I have has an atmega328 so I set the ‘board’ option to Duemilanove or Nano with ATmega328. Is this correct? I’ve also tried all the other options that mention 328. Every time I get the avrdude - not in sync error.