MultiWii

i use a arduino mega board with a protoshield and a cheap gy80 without problems... with patience and knowledge of electronics you can do your quad... but better buy a flight controller as quadbow recommended

Again, thanks! I will make it the next weekend and post the results...

tnx for your quick response! i know that, but in the circuit? negative to ground or to arduino pin? sorry, but my english is terrible!

excuse the basic question, but which is the polarity of the electrolytic capacitor? Negative to gnd?