Okay, so working alone you often find yourself falling behind the curve. I just got my displaylink [1] working the other night and today I found this little device – a 2.8" TFT resistive touch screen for the Pi [2].
[3]
This is a much better solution than the DisplayLink for the trailer. But if I spend any more money getting this thing working I may have to sell one of the dogs. Eeek.
I'm going to keep going with what I have and then return to the touch screen option a little later. I need to get to a fully functioning prototype [4] before I go to cost -reduction and feature-enhancement mode.
You can buy this display via eBay.uk [5]. It's about $32US, plus shipping. There is a discussion topic [6] about it on the raspberry pi [7] forums for the original version, which has since been updated [8].