Hobby Stepper Motor Driver-what features do people want?
I am designing a stepper motor driver that will drive any bipolar stepper motor using a servo PWM signal from a microcontroller or R/C receiver. The following features are already included (user defined by jumper or trimmer); what other features do people want?
Jumper-Mode selection: continuous rotation or position (-180 to 180) (mimics both types of servos)
Jumper-Half/Full step size
Jumper-Stepper controller mode: changes coil pattern, see L297 datasheet
There is a 4pin header (Step, Dir, Enable, GND) in case the user wants to bypass the MCU.
Would a serial interface be helpful? Would compatibility with other stepper types be useful (e.g. unipolar)?
I think both bipolar and unipolar capability is a big advantage. Micro stepping at a higher resolution may help as well. Like 1/8-1/16.
Currently I have only bipolar support and full/half stepping with both position and velocity control. May be able to do the microstepping via software in an update. Maybe in a future revision I'll add unipolar support.