Serial auto-enable works on B3

[Mitch Bradley]

BTW, after removing the power resistor, you must be careful to clean off 
excess solder, because the crucial gap is small and "embedded" in the 
large pads.  I had to use ChipQuick to get the resistor off, then I had 
to add regular solder back to the pad to alloy with the ChipQuik, as 
ChipQuik doesn't flow onto solder wick very well.

Richard A. Smith wrote:
>> With the dongle connected to the serial connector on the B3, it comes up 
>> with serial enabled.  Disconnected, serial is disabled.
>>
>> I haven't tried the pencil-enable technique.
>>     
>
> The new batch of serial adapters with this enable signal built in should be ready in about a week or so.  1cc will have a small stash of them and the rest will be available from the association and spare parts places like XO Explosion, etc.
>
>