Hi Guys. :)
I'm really new to Arduino, and I'm planning to make an obstacle avoidance robot. So I'm using Arduino Mega 2560, 2 X DC motors (They yellow colored), 1 X Tower pro mg996r (Violet Sticker on it), L293D motor shield, and A sonar sensor.
I'm really confused whether I should put external source to the Arduino itself or to the Motor Shield or both. So I'm planning to buy a really long usb cable and plug everything. Is it a good idea?