LCD evaluation and other preparations for FC handset

[Das Signal]

Hi Mychaela,

> * For the data and control lines, the other end of the wire would need
> to go to a pin on an FT2232D breakout board just like the ones we use
> for FCDEV3B UARTs - how would this connection be made?

Each Kynar wire would be soldered to a classic 2.54mm female wire that can
be plugged into the FT2232D, with the exception of bus pins you mention.

> * Several pins on the LCD need to be connected to GND, and several LCD
> pins need to be connected to the 3.3V power rail.  There are two GND
> pins and one 3.3V pin on the FT2232D breakout board.  How would these
> "bus bar" connections be accomplished?

Simply by soldering the Kynar wires together, and then to a single 2.54mm
wire to GND or 3.3V.

> cathodes are brought out separately, and each needs its own series
> resistor - a 120 ohm resistor between each LEDK pin and GND.  Where
> would these resistors go in your proposal?

Well series resistors can be added to each Kynar wire, and then soldered
to a single 2.54mm wire that will be connected to ground.

> But if you think you can solve all of the above, I would GLADLY send
> you one of these HaoRan LCD sample pieces plus an extra FT2232D board
> (identical to the one I assume you already have for FCDEV3B UARTs) if
> you can then send me back an assembled and working arrangement.  Heck,
> I could even send you two LCD pieces (the sales lady from HaoRan sent
> me 5) so you could keep another fully assembled setup for yourself. :)
> All of the software needed to make it work resides in the
> freecalypso-hwlab Hg repository on Bitbucket.

That's very doable, although I'd like to know the spacing between each pad
on the flex connector. If the spacing is too small (like < 0.2mm) then
I'm not sure I'm up to the task.

--DS