A4988 Driver font b CNC b font font b Shield b font Expansion font b Board
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A4988 Driver CNC Shield Expansion Board for Arduino V3 Engraver 3D Printer FZ1350

A4988 Driver CNC Shield Expansion Board for Arduino V3 Engraver 3D Printer FZ1350

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A4988 Driver CNC Shield Expansion Board for Arduino V3 Engraver 3D Printer FZ1350

Item Description:

100% brand new and high quality
This expansion board as a driver expansion board, can be used for engraving machines, 3D printers.
It is a total of four slots, can drive four A4988 stepper motor. Each road stepper motors only need two IO ports. In other words, six IO ports can be well managed three stepper motors. Very convenient to use.
UNO for Arduino module IO port correspondence introduction.

IO corresponding figure above

UNO for Arduino———————- expansion board
8 ———————— EN ( stepper motor driver enable , active low )
7 ———————– Z.DIR (Z -axis direction control )
6 ———————– Y.DIR (Y -axis direction control )
5 ———————– X.DIR (X -axis direction control )
4 ———————- Z.STEP (Z -axis stepper control )
3 ———————- Y.STEP (Y -axis stepper control )
2 ———————- X.STEP (X -axis stepper control )

/ / The following is a simple stepper motor control procedures,

# define EN 8 / / stepper motor enable , active low
# define X_DIR 5 / / X -axis stepper motor direction control
# define Y_DIR 6 / / y -axis stepper motor direction control
# define Z_DIR 7 / / z axis stepper motor direction control
# define X_STP 2 / / x -axis stepper control
# define Y_STP 3 / / y -axis stepper control
# define Z_STP 4 / / z -axis stepper control
/ *
/ / Function : step . function: to control the direction of the stepper motor , the number of steps .
/ / Parameters : dir direction control , dirPin corresponding stepper motor DIR pin , stepperPin corresponding stepper motor ” step ” pin , Step number of step of no return value.

* /
void step (boolean dir, byte dirPin, byte stepperPin, int steps)

digitalWrite (dirPin, dir);
delay (50);
for (int i = 0; i <steps; i + +)
digitalWrite (stepperPin, HIGH);
delayMicroseconds (800);
digitalWrite (stepperPin, LOW);
delayMicroseconds (800);

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