Creality Ender 3 Stock Factory Vref

README.md

Creality3D v1.1.2 stock vref values

A4988 Drivers
Vref set to ~90% of stepper rated current
Rs = 0.1ohm

X = 0,58v (0,725A)
Y = 0,58v (0,725A)
Z = 0,58v (0,725A)
E = 0,72v (0,900A)

Stepper Motor datasheets

Naming: [JK][S]HS[L]-[100][4]

JK: Manufacturer (jkongmotor) S: Size (42mm) HS: Hybrid Stepper L: Length (34/40mm) 100: Rated current 1.00 4: Number of wires

• X, Y, Z: 42x34 1.8deg 0.84A 4xwires jk42hs34-0844 yal8-23

• E: 42x40 1.8deg 1.0A 4xwires jk42hs40-1004a-02f

• http://www.jkongmotor.com/Product/42HS-NEMA17-2Phase-Stepper-Motor-1-8%C2%B0.html

• https://jkongmotor.en.made-in-china.com/product/pvdJZFXCiRks/China-Jk42hs40-1704-NEMA-17-3D-Printer-Stepper-Motor-42mm-Reprap-Motor.html

References

• https://reprap.org/wiki/Pololu_stepper_driver_board
• https://reprap.org/wiki/A4988_vs_DRV8825_Chinese_Stepper_Driver_Boards

I can't speak to "usually". It's often as high as 90%, and it can be set much lower to save a little power if you aren't running a race printer. Feel free to adjust it downward until your printer starts losing steps, then back up until the step loss disappears.

Then pop a note into the control board compartment to remind yourself of that adjustment in case you ever get the Need for Speed and want to adjust it higher again.