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Product Name: 3D printer StepStick DRV8825 stepper motor driver Reprap, 4-layer PCB board( 5pcs/LOT)

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More Features than 4988 :
1, the maximum current of 2.5A.
2, up to 32 segments.
3,4-layer PCB, better thermal performance.
4, smaller chip interial resistance , lower heat, better heat dissipation.
Parameters:
Dimensions: 20mmX15mm (same as 4988)
Driving current: 2.5A
Subdivision: 1,1 / 2,1 / 4,1 / 8,1 / 16,1 / 32
The adjustment  of driving current:
Connect the GND  with a multimeter's black pen , connect the  adjuster on R1 (ie potentiometer)  with red pen, adjust the voltage between  0.3V - 0.6V, according to the specific motor parameters to adjust.


The adjustment  of driving current:

Connect the GND  with a multimeter's black pen , connect the  adjuster on R1 (ie potentiometer)  with red pen, adjust the voltage between  0.3V - 0.6V, according to the specific motor parameters to adjust.


Note : when you install the driver module, we must pay attention to the direction  that the wrong direction can cause burning module, such as the image above B1, B2, A1, A2 should be connected to the electrical interface.