Added the temperature sensor and fiddled with that for an evening or two. Getting .1 degree celsius accuracy, calibrated against every other thermometer I could find.

Tonight I moved that off the breadboard and added temperature as a display mode. Sort of. For now it just turns red if reading is higher than last, green if same, blue if lower. Might be fun for long exposure thermal imaging but will have to come up with a more useful display.

Some progress!