Home > Controllers >

Gradus M1 PRO GRBL CNC Controller
Gradus M1 PRO GRBL CNC Controller

Alternative Views:

Gradus M1 PRO GRBL CNC Controller
Price: $69.00

Stock Status:In Stock

Availability:: Usually Ships in 1 to 2 Business Days
Product Code: GM1PRO

Stepper Drivers:



The Gradus M1 PRO is a 4 driver / 3 axis CNC controller running GRBL . It has accepts pololu style drivers like the SD8825, SD6128 and A4988. It also has sockets for the newly developed Bigfoot driver profile which feature a larger footprint to accommodate higher current drivers like the BSD109A running at 3Amps.

The Gradus M1 PRO can be used for small to medium sized CNCs, laser cutters, plotters and other machines up to 3 axes. The 2 middle drivers are slaved for dual motor setups.

The M1 PRO features a galvanically isolated USB port using the popular ADUM4160 Digital USB isolator chip to improve USB communications even in harsh and noisy working environments.

Bigfoot BSD109A 3A 48V driver available.


  • Runs GRBL CNC firmware ( pre-installed)
  • 48V Max input with on board 5V switching regulator
  • 4 driver slots using pololu style drivers used by 3D printers
  • 4 driver slots using new Bigfoot driver profile
  • 3 axis(X,Y,Z) with 2 drivers in slave mode (Y axis)
  • Galvanically Isolated USB using ADUM4160 chip
  • 3 Home/Limit switch inputs, ESD and EMI filtered
  • 3 extra inputs for Feed hold, Cycle start and reset. ESD and EMI filtered
  • Probe input. ESD and EMI filtered
  • 2 outputs available for Flood and Mist
  • PWM Spindle control
  • 0-10V VFD spindle control (experimental)
  • Terminal block I/O connectors
  • Emergency stop pins (reset)