Youre right-no point doing if I do not have the bits already and would spend more than just buying the correct Serial LCD .
I thought it was going to be simpler.
Thanks for your help ,anyway.

Jan
Just re-reading your reply . I dont think I made it clear -I have ANOTHER Pro Mini ,other than the one being used for the flight Control unit in the diagram.
Is the answer ,still ,No?

Jan D
Thanks . I realised I could just buy a Serial enabled LCD or a back pack ,but was hoping  with the parallel LCD and the pro mini I already had , I could make it work .
Seems the answer is -No .

Please can someone help me with how to create a serial LCD display  from this Parallel display
http://www.pololu.com/catalog/product/772
and a 5v Pro Mini board ,both of which I already have.

I have them set up at present for The "Hello World " tutorial ,but want to use it as the LCD as shown in the top left of the attached diagram to read some flight control parameters
http://www.rcgroups.com/forums/attachment.php?attachmentid=3679886.

My level of expertise is -novice . I understand how to compile and upload an Arduino sketch and undertake the most basic of editing. I have completed some of the simple Arduino tutorials ,including Hello World.

I am hoping the answer is as simple as uploading a  new sketch to the Pro Moni and being told which pro mini ternminal to use for the single wire input.

Hope someone can help
Thanks
Patrick

Answered my own question-dodgy bread board connection  :

Just starting to use Pro mini .Loaded Arduino and have Blink working.
Experimented with changing the flashing durations by editing and reloading the code, and that all works fine
Now trying to change the flashing to a different pin from pin 13 by changing the "13" in the code to other pin numbers -tried 9,10,11and 12 but no joy.
Powering and loading via FTDI Basic Breakout - 5V
Help please!
 :-/