• What's the difference between KMotion and KFLOP?

KFLOP is our newer higher performance and lower cost DSP board designed for more modular solutions

Where KMotion contains on-board power amps and on-board Analog IO, KFLOP does not. 

• Are there really 4 complete power amps on KMotion?

Yes each contains dual full bridges capable of up to 3 Amps @ 55V

• I'm trying to drive a 5V motor with a 5 Volt supply, why isn't it working?

The motor supplies must be between 12-55Volts (80V for SnapAmps).  Automatic low voltage protection disables the outputs when the supply drops below ~ 10 Volts

With Stepper motors it is often desirable to use a higher supply voltage than the rated voltage.

• Can I have different motor voltages for different motors?

Yes. 

• Will the GCode Interpreter run stand-alone?

No.  The RS274 GCode Interpreter executes on the PC and sends coordinated motion commands to the KMotion Board.

• What needs to be loaded on the host computer to send commands to the KMotion Board?

KMotion USB Drivers

 KMotionDLL.DLL

And an Application to makes calls to the KMotionDLL.DLL

• Does KMotion or KFLOP work with Mach3?

Yes.  Both.  Basic features are supported.  Coordinated motion, Jogging, Homing, Spindle control, Encoder Feedback, and more.  See here.