The basic hardware is mostly done. I've put up some pictures at Instructables: http://www.instructables.com/id/E5X914VH7UR7LEK/
I've tested it so far with three thermometers and one blower and I intend to have 5 or 6 thermometers. I haven't put it in a box but hope to do so this weekend. The PID software is written but not tested. On the plus side I got wireless fully working. My focus now is on the software side which will take a few weeks at least.