OK, guys... thanks for the input. It is as I was afraid of.... this is a much bigger bite than I'm able to swallow at this point. So far, I'm thinking that the RPi piece is pretty straightforward - all I'd need to be able to do is to create the overlay graphics themselves. The tricky (read : $$$) pa...

Hi there - I've been using uControllers and a video overlay board (http://www.decadenet.com/bob4/bob4.html) to do simple overlays, but am interested in moving to a RPi to get HDMI quality. The output is pretty simple stuff - data collected from sensors and output as serial data that needs to be form...