[TriEmbed] Is there a FET trick for this?

[Brian]

On 12/2/2015 10:31 AM, Shane Trent via TriEmbed wrote:
>     want to ensure you never try to drive the I/O pin low when FTDI
>     cable is connected.

Indeed.  That's what the optional diode on the arduino pin would guard; 
if driven low, the diode would be reverse-biased.  Omit it at your own 
peril. ;-)

-B