As my first blog post in diydrones I'd like to show, specially to other noobies what is the so much talked PID so much used in our Arducopters and Arduplanes.

This video has substitles also in english and russian but you have to select it to activate them.

It shows in a very dummy but effective way what PID is, and hope it makes things more clear for those who need it, so when you re-read again those tutorials, things can make more sense.