Hi Shearder,
Grbl Controller is software that is designed to send GCode to CNC machines. It isn't super smart, it just needs to give the user a nice way to get commands down to whatever controller they are using.
A Ruida controller includes two things:
1- The necessary hardware to control a laser cnc system (can control: drivers, power supplies, sensors and came with a beatifull control panel with display to control the machine).
2- A proprietary software to prepare the files called RDWorks.
The controller Ruida is like a more "professional" option.
More simple to use, since the process of configuring files is more accomplished and is much more intuitive.
Best wishes!
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