[dorkbotpdx-blabber] Designing a Parallel-to-USB Converter

[Tim Hatch]

> I was actually questioning the gate at all. Strobe the data in with  
> a pin change interrupt.

The inverter or the latch?  The inverter was to get the clock okay for  
the latch (since it latches on the rising clock, and data is available  
from the falling edge).

The latch is there because on the Stickduino PC6 doesn't work for  
input, so it takes several clocks to get the data.  I was getting some  
strange corruption (like doubled characters) without it, although that  
was several days ago and I should try again with the latest code.  I  
guess on the AT90 series if a whole port is available for input, the  
latch might be unnecessary (if that does work, the layout becomes a  
lot easier).

Tim