the Display is a Pictivia OLED 128x64 with a very brilliant contrast.
I got it as a gift, but it has to be similar to this http://de.farnell.com/densitron/dd-12864yo-1a/display-oled-128x64-yellow/dp/1498862
My Navigation (its a little less than navigation), which is no yet road testet ( we have a lot of snow in germany right now, not good for motorbike ) works with a EM406 http://www.sparkfun.com/commerce/product_info.php?products_id=465
. The Steps for successful "navigation":
1. Open Googleearth and place waypoint whereever you want, i plan to place a waypoint on every turn
2. Start the miracle skript that converts the Google KML file to something my code can unterstand
3. open a serial connection to the speedoino ( wireless, using bluetooth ) and navigate to the "import gps" menupoint
4. Paste the route to the terminal, the speedoino will save it on the installed SD card
5. start motorbike and ride down the street, the speedoino will calculate the distance to the first waypoint and show something like "turn left" "Hannoverstreeet" as you can see in the video
6. as soon as you reach the "area ( distance less than 30 m to exact location of the waypoint )" the speedoino will jump to the next waypoint ...
thats if for now. No "planing the route live" with the arduino ..