I've recently bought an outdoor temperature sensor, specifically this one off of eBay.
I then went on to use this tutorial to hook it up using a breadboard and such. The only difference being I used a 10kΩ resistor as I didn't have a 4.7kΩ resistor.
I first used it in my room and it read about 25°C, which was perhaps 1°C or so off the room temperature, however I then put it on the windowsill and it shot up to 36°C, which I don't think is plausible today in London!
What's going wrong, is it the wrong resistor?
