The purpose of this thread is to establish a specification for an open source hobby CNC controller. I have gotten input that is should support more than one type of motor. To do so I need input as to the other types of motors is should support. The current motor spec is as follows:


The controller will be designed for contant current control of inductive load two phase bipolar stepper motors. Each of the three motors will be controlled by two signals: step and direction. The chopper oscillators for all motors will be synchronized to mainimize ground noise problems. Each motor drive can be individually configured for full sep mode or half step mode. The drivers will supply 5A max peak current to each phase and 4 Amps toal RMS current. The peak load current may be set with on board potentiometers or fixed value resistor dividers. The controller will be able to supply up to 48 Volts across each motor phase.

If it is thought that other motor types should be supported then they should be specified in the same level detail as the one above.

I have received input that the board should support both bi-polar and uni-polar motors.

I have also received input that half step and full step is not fine enough control. The the board should support quarter step and maybe even eighth step.

Any input before I finalize the motor types that the controller will support?

Thanks,

Greg