Hi guys,
Just wanted to share with you my DIY sat nav solution.
As you can see from the photo, I have a Pebble Watch (£90-100) strapped around a piece of pipe insulation. Inside the foam insulation are some rubber feet (
http://www.maplin.co.uk/p/stick-on-feet-small-fe32k) to stop the whole thing from slipping around. The watch is waterproof which is handy in the English summer.
The watch connects to my Android phone to a nice bit of software called NavMe (a bargain at £1.80). I believe there is also equivalent software available for iPhone as well. Although it's not obvious in the picture, the watch also displays the distance before the next turn/roundabout/etc.
I been using it this week and it works a treat. The screen is easy to read and takes about the same concentration as glancing at the speedo. Only downside is that it may be difficult to read at night.
David.