I'm working on building a spherebot ( http://www.thingiverse.com/thing:7656
), but I have a question:
Are stepper drivers required? I know that the arduino CAN
control the steppers directly, but "can" is a lot different from "should". I know that they increase the current, but that much torque may not be necessary for something that rotates a spherical object and moves the pen holder five inches along the X axis.
If they're not required, would I need to add something else like resistors to the circuit?