hi total newbie here:
i just got a phidgets stepper motor with the expectation that i can do something similar to this:
but when i went to the product page (http://www.phidgets.com/products.php?product_id=3319_0
) it says
warning: connecting the motor directly to a power supply will destroy the motor and void the warranty. If you want to check your motor make sure it is connected to a constant current / chopper drive controller.
and a quick google of "constant current/chopper drive controller" turned up something like this:
slightly overwhelming for someone new to electronics. :/
my question is, what exactly is the significance of a constant current/chopper drive controller? do i really need one? can i limit the current with PWM or just a very big power resistor and just ignore the "constant current" thing? (i don't need a whole lot of torque, the motor will be driving the fine control knob of a microscope)
also what exactly is a bipolar hybrid motor? do i drive it the same way i drive a bipolar motor?