Using Arduino Uno instead of FTDI cable to program 1284p w/ Optiboot

Other Hardware 3rd Party Boards
38

tack:
Changing the fuse to 0xf7 for Full Swing Oscillator solved the UART0 issue for most, me included.

I substituted a resistor and a capacitor for a single bit in the low fuses - and it works.

So I'll try again:

Final Remark 2.0: Set the low fuses to 0xF7 (not 0xFF) to enable the Full Swing Oscillator.