Bảng Mạch Mở Rộng Cnc A4988 V2.0 V3.0 V4.0 A4988 Cho Máy In 3d

1Pcs CNC A4988 Shield Expansion Board V2.0 V3.0 V4.0 A4988 Driver Module For Arduino DIY Kit 3D Printer Engraving Machine

V2.0

Specification
1. CNC Shield Version 2.0
2. GRBL 0.8c compatible. (Open source firmware that runs on an UNO that turns G-code commands into stepper signals)
3. 3-Axis support (X, Y, Z , )
4. 2 x End stops for each axis (6 in total)
5. Spindle enable and direction
6. Coolant enable
7. Uses removable A4988 compatible stepper drivers. (A4988, DRV8825 and others)
8. Jumpers to set the Micro-Stepping for the stepper drivers. (Some drivers like the DRV8825 can do up to 1/32 micro-stepping )
9. Compact design.
10. Stepper Motors can be connected with 4 pin molex connectors or soldered in place.
11. Runs on 12-36V DC. (At the moment only the DRV8825 drivers can handle up to 12. 36V so please consider the operation voltage when powering the board.)
V3.0

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.
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);
V4.0

CNC shield V4 needs to work with Nano board. It can be used as driver expansion board for engraving machines and 3D printers. It has in total 3 channel slots for A4988 stepper motor driver modules (not included) for driving 3 channel of stepper motors. Each channel of stepper motor only needs 2 IO ports, which means 6 IO ports is sufficient to manage 3 stepp