LEAD Controller

Machine Control - Made Easy!
Download LEAD ControllerWatch the Walkthrough Video

Download LEI's LEAD Controller

Download our full-featured, cross-platform machine controller used for interfacing with our HX Series II product line and advanced CNC firmware like GRBL.

Download the LEAD Controller Software User Manual

Download the LEAD Controller Software User Manual and learn how to use our full-featured CNC machine controller!


Hardware Requirements

Processor Speed:266 MHz
Required RAM:128 MB
Disk Space (minimum):0.5  GB
Screen Resolution (minimum):1000 px X 786 px

Currently Supported Client Operating Systems:

Mac OS


.DMG Coming Soon!


  • Windows 10 32-bit and 64-bit
  • Windows 8.X 32-bit, 64-bit, and ARM
  • Windows 8 32-bit, 64-bit, and ARM
  • Windows 7 SP1 32-bit and 64-bit
  • Windows Vista SP2 32-bit and 64-bit



  • Executable Coming Soon!

Download the LEAD Controller Now!

Version 1.0 Released 02/08/19

Version 1.0 Released 02/08/19

Version 1.0 Released 02/08/19

LEAD Controller FAQs:

I am able to send manual data (MDI) commands, but I can't run a program.

It is important to execute the [Cold Start Routine] on each and every machine start-up.

To perform the [Cold Start Routine]:

  • Upon initial connection to the CNC machine via the LEAD Controller:
    • An alert window will notify the user to perform the [Cold Start Routine].  
    • Click [“OK“] to clear this alert. 
  • On the function command line (located on the center-bottom of the LEAD Controller) press the following buttons, in this order:
    • Click [“Unlock“]. 
    • Click [“Reset“].
    • Click [“Home“]. 

These commands, executed in this order, perform the [Cold Start Routine] and properly primes the machine for operation.   

Additionally, these commands will need to be executed to properly clear a machine alarm state.

Both the [“Start”] and [“Run From Line”] functions will work correctly, after successfully executing the [Cold Start Routine]. 


My HX8410 VMC and/or HX710 TC [HX Series I Product Line] doesn't work with the LEAD Controller.

A firmware update is required to use the HX Series I product line with our LEAD Controller. 

The LEAD Controller uses our LEI Grbl v1.1 firmware.  If your machine has an earlier version of our Grbl fork, please contact us directly to obtain the required firmware updates and installation materials. 

Leading Edge Industrial


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