My background is in software but I'm really beginning to love the world of electronics, always a great feeling to put your knowledge to create something physical rather than abstract :D
Now the question. After going through some beginner tutorials on Massimo's youtube channel I acquired a temperature sensor in order to test it out. It seems to work (I think) though the value stay around 20-25 on their own accord, not changing when I hold it or anything which is very strange. However when I hold it up next to my laptop's fan that's spewing out hot air it then changes - so I guess it is working.
I then tried to plug in some LEDs in order to have a sort of a visual explanation for the temperature where more and more LEDs flash the higher the temperature goes above a base level. The problem I have however is it often goes from 20ish to near 30 in less than a second, and these leaps seem to be fueled by the weirdest thing - opening/closing the Terminal on my computer.
Is this something to do with Arduino's electronic output limit or something of that type, or is it more likely to be a setup issue by me.