My circuit board can work very well in normal and high temperature circumstance. But it works bad when i put it in the freezer, about -25°C. In these days, even these months, i pay most of my attention on solving this problem, but all in vain.

It makes me very distracted, and sometime i am going to give it up! This is almost the last problem of my project. If i conquer that, what waits for me next is finishing the paper and then i can get my Master Degree later.

Come on boy! I know you can beat it!