Thanks for the rapid responses guys! I was thinking there might be some electrical interference as well.
@Nick Gammon - It's pin A1. I was referring to the 5 or so lines starting with: "TCCR1B = 0"
temperature readings more than once every 5-10 minutes?
- I need to tell when her finger is placed over the sensor for about 3 seconds (enough to cause the temp to rise)
@AWOL and others: Okay, I'll make those constants, and optimize the others good idea.
Crap! I have an old scope, so I'm not so sure it'll help. I haven't tried deactivating the VFD via software, then taking the temp - that could definitely be the issue. If
it is the issue, how on earth do I solve it quickly?