I bought a 4duino pro uno today. It should be compatible with Arduino Uno, but it has some extras. Mainly a built in motor driver for two dc motors. But I have a very hard time finding a thorough datasheet or guide for the board, which makes me believe that the manufacture takes things for granted. There's a jumper switch for selecting either VDC or VIN for the power source. And there's a mention about 11 V 1.5 A max power for the motors (pretty cool, or hot actually). The VDC stands for the standard round socket that a normal Uno also has. VIN is a screw terminal. Can I assume that these two power inputs are identical? Both go to the same regulator? Both go unregulated to the built in motor driver? Am I also supposed to assume that the 11 V only goes to the DC motor driver, but nowhere else? So if I want to power several servos, say with 9 V, I need to have them powered say from my battery pack.
I have a sensor shield for my standard Uno. This 4duino has kind of the sensor shield built in, namely a nice row of ground, voltage and signal pins for digital pins 0 to 13, just waiting for a servo socket to be connected to them. But the voltage pin is only the regulated 5 V, right? Barely enough amperes for 1 or 2 servos?