I'm having some troubles with a homemade Uno. It's an exact copy of this: http://www.hobbytronics.co.uk/datasheets/breadboarduino.pdf
It uses one of Sparkfun's FT232R Breakout boards.
I'm running Mavericks OS, which I believe has some driver issues thanks to Apple, so I have wiped the drivers provided by Apple and installed the correct drivers from here: VCP Drivers - FTDI
When I plug it in with my USB cable, I see both the RX and TX pins flash twice at the same time.
When I upload, the TX pin flashes 3 times and produces this:
Binary sketch size: 1,082 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.usbserial-A5025MJU -b115200 -D -Uflash:w:/var/folders/dw/bfvq4p9d033c_w8s4dmsj5b40000gn/T/build4280376479980068633.tmp/Blink.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/SimonRogers/.avrduderc" User configuration file does not exist or is not a regular file, skipping Using Port : /dev/tty.usbserial-A5025MJU Using Programmer : arduino Overriding Baud Rate : 115200 avrdude: Send: 0   avrdude: Send: 0   avrdude: Send: 0   avrdude: ser_recv(): programmer is not responding avrdude: stk500_recv(): programmer is not responding avrdude done. Thank you.
If I attempt to burn the bootloader again, I get the exact same code.
(Note: the Atmege328p-pu I am using comes with a pre-burned bootloader. Allegedly it has been tweaked to work better with this type of breakout board.)
I'll gratefully receive any wisdom on this one.
EDIT: I've tried setting the board as Board > Uno, Board > Demi 328, Board > Nano w/ 328. I've got it going to .tty port as you can see in the code (but I've tried .cu) and I'm using the standard AVR ISP as the programmer.