We think of the Arduino as a rapid prototyping tool but we never thought of it as an FTDI breakout board before. [Ihsan Kehribar] wrote a quick post to show how it’s done. You’ll find an FTDI ...

Once installed, just connect the FTDI programmer to the FTDI programming port of DIY Arduino accordingly ... you can configure the ATmega328 to use its internal 8 MHz RC oscillator as a clock source ...