I am doing a senior design project. We are using an isight to do image capturing of a resistor, then figuring out its' resistance through band color identification. We then have a conveyor belt system to transport the resistor to an appropriate bin. We have found a unix script to capture information from the isight, but we don't know to use my powerbook to write to a motor controller. What do you think would be the best method to do this? We are already using matlab to do some image analysis. We will be operating in Unix so hopefully there is an easier method outside of using python. With that said, python is our last resort. Can C be used to impliment this? We can use C for the image processing instead of matlab, so is there a way to communicate to an external motor controller via USB -> Serial cable? And how?