Question regarding current

Do all 3 X,Y,Z axis have the same current limit? (asking since there are 2 steppers to one driver for both the X and Y axis)

Also what is the general default current used? (not understanding the current limit equation from video)


Electrical Specification:

  • Manufacturer Part Number: 17HS19-2004S
  • Motor Type: Bipolar Stepper
  • Step Angle: 1.8 deg.
  • Holding Torque: 59Ncm(
  • Rated Current/phase: 2.0A
  • Phase Resistance: 1.4ohms
  • Inductance: 3.0mH+/-20%(1KHz)

Physical Specification:

  • Frame Size: 42 x 42mm
  • Body Length: 47mm
  • Shaft Diameter: 5mm
  • Shaft Length: 19.5mm
  • D-cut Length: 19.5mm
  • Number of Leads: 4
  • Lead Length: 225mm
  • Weight: 390g


Black(A+), Green(A-), Red(B+), Blue(B-)


Start with X and Y at .7V and Z at .46V and see how things feel. They can handle more than that but you will need a fan on your ramps board to keep the drivers cool.