The plan is for a small box that's locked. It will only open in a specific location (GPS obviously) and can give some hints (probably a 2-line LCD display) on getting there. Once she's there the box will open and there will be the ring - and her other half. The inspiration from this was a guy who did something similar as a wedding present. Can't find the link right now. [Edit: Here it is.]
A nice neat little box would be ideal, so the Netduino Mini fits the bill. I'm UK based so I'm thinking about something like this GS module from SKPang. Hoping to keep things simple so a serial enabled LCD like this.
So, if anyone has got any useful tips please jump in. Off the top of my head:
- What GPS / LCD unit is likely to work best
- Whether I'll have any issues trying to use 2 serial devices on the Netduino