Another previously-unfinished draft, but plausibly useful

_---------

turns out pip doesn't convert *to* intel hex... it can convert *from*. Well, that doesn't help.

Took a bit of effort to get communication working... a few surprises. 

Unless I happened across two bad pinouts, this guy has tx and rx swapped from the RS232 standard. Also it doesn't have most pins typically used... it has a CTS input, but no RTS output, nor DTR, etc. So, my null modem cable, per wikipedia, didn't work. 

First i Cut the RTS->CTS wire and rewired the PC's DTR->CTS and