I'm very new to Arduino. For my first project I'm trying to do something very simple.
I want to have 4 small vibrating motors randomly turn on/off using pduino.

I can easily get one motor working and turning on and off using a [random] object. As soon as I add a second motor though, it begins to affect the other motor and causes a pulsating when it is on. I'm assuming it has to do with powering the motors, but I'm new at this and don't know how to adjust accordingly.

Any help is greatly appreciated.

Did you set all the pins you're plugging the motors in as pwm pins, or servo pins? Not sure if this's got something to do, I'm not using pduino, but could be. Can you share the part of the patch with [random]?