[amsat-bb] OLPC Serial Port built-in...

[Robert Bruninga]

>> Does the OLPC have a serial port?
> 
> No. but it does have 3 x USB... and a sound card.

But since the sound card has been shown to have a DC input
capability, it would seem that it could be used as an RS-232
serial port too.  Just a little bit-banger software...

The output might not have enough swing to drive other devices,
but the input should work.  That would be a great capability...
For backward compatibility with RS-232 devices out there...  A
good project for someone...