Hi Brian
I'm currently adding J type thermocouple support, and just last night downloaded the newest API from Phidgets and saw the SBC3 for the first time.
I
believe it will be fully compatible out of the box - it only acts as a host i.e. there is no code in Roastmaster that directly addresses the SBC itself - only the temperature sensors attached to it by way of their Web Service that runs on the SBC.
The only possible caveat I can see is that the Phidget drivers are not forward-compatible - meaning that the version running on the SBC must exactly match the drivers in Roastmaster. This means you'll have to install the appropriate driver according the chart here...
http://rainfroginc.com/documentation/setting-up-data-logging/ which, by now is an older version.
It's great timing, though, because I'm going to be sending the current update out for beta to a J type thermocouple user this week. If there are any problems with the SBC3, you and I should be able to work them out with a beta build over the next week.
When it arrives, if it's not evident how to 'downgrade' drivers on the SBC preference pane you install on your desktop, let me know and I'll do the research for you. It's very easy to install
updates to the SBC - just one button, but downgrading I've never had to do. I need to type up better instructions for SBC users anyway, so I'll be investigating that this week anyway.
Please keep me posted