New Temperature Sensors

I got my self some new temperature sensors for my hacked together home thermal monitor. The software that runs this is still aweful, that’s on my project list. But at least now I’m able to figure out thermal variance inside the house, which is broader than I’d have expected.

A couple other changes were made in loading in the new sensors as well.

The outdoor temperature sensor is now on the North side of the house. This should minimize the amount of the day sunlight can hit the thing. While Oregon Scientific believes it can live in direct sunlight, my experience over the last two weeks is that it definitely can not. You get a 4 – 6 degree spike under direct sunlight. I could almost use the spikes to generate a map of the trees on the south side of the house based on when their shadows hit the sensor. The short of it, my reporting to Wunderground should be more accurate now.

The cold frame sensor is still at the far edge of receptivity, especially with the amount of earth it needs to go through. I build a tin foil reflector which seems to be helping a little, but it still drops out from time to time, generating the square waves in the curve. Not much I can do about that.

If you want to know more about this project, this post is probably the best starting point.