Use A4988 module on MKS Gen_L V1.0 and V2.x motherboard

How to buy

• A4988 module on Aliexpress A4988

MKS GEN_L M0-M2

MKS GEN_L V1.0              MKS GEN_L V2.x
M0 M1 M2                    O O=O  M0
O  O  O                     O O=O  M1
|  |  |                     O O=O  M2
O  O  O                     O O

Dir/step mode set

• Microstep Setting

          A4988                             
  M0  | M1  | M2  | Microstep Setting
  GND | GND | GND | Full Step
  VCC | GND | GND | Half Step
  GND | VCC | GND | Quarter Step
  VCC | VCC | GND | Eighth Step
  VCC | VCC | VCC | Sixteenth Step
  GND = Jumpers open 
  VCC = Jumpeers connection
  

• Driver current regulation
  • Verf measures the voltage of Gnd and potentiometer middle
  • Please DO NOT connect the motors when measuring the voltage, or it's easy to burn the drive
  • Please connect the power supply when measuring voltage as well, do not connect only the USB power
  • I=Vref/(Rs*8) Default I=1.0A