Finished my jacket with VGA, RS232, USB hub, car charger, audio preamp, ...must see!!
After a lot of work and time I finally finished my jacket like magic box with following features:
VGA out
Serial port with circuit for TTL to RS232 signals conversion.
Car charger
Input for 5v Dell power supply (includes protection against connecting 12v and 5v at a time)
PDA USB client connector.
USB HUB x4 (powered when applying 5v or 12v)
Audio preamplifier with double format output (RCA and mini-jack connectors)
I took plenty of pictures of all building details. I am planning to publish my work at my web page currently under construction.
Here you have a selection of pictures of my final result
VERSION 1
(High resolution pictures for bottom post attached pics)
I decided to include a preamp because PDA sounds very lower than radio in my car when connected to car stero aux input. Preamp equals all volumes: radio/cd and aux-PDA.
pretty cool. any idea what it will cost if you produce them for sale?
I did not think about that.
I have used this car holder as starting box and I mouled the rest. http://www.pdamods.com/proddetail.as...A11CRXDLX50MNT
The unit cost me €45.00 euro including shipping costs.
Unit cames with car charger circuit and X50/X51 connector, so I did not have to buy those components.
Rest of material (RS232, preamp, connectors, wires, etc) could be less than €15.00, but I used also several parts from broken computers I have.
It took me 10 days of my vacations, not bat to be a prototype!.