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CNC Shield V3 3D Printer Expansion Board A4988 Driver Board
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CNC Shield V3 3D Printer Expansion Board A4988 Driver Board

- Red 1pc

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    COD This product supports COD on delivery. Suggestions: Do not place orders with non-COD products, otherwise you will not be able to choose COD payment method.
    Ship between: Aug 11 - Aug 13, Estimated Shipping Time: business days Order Processing Time may require a few days. Once dispatched from warehouse, Shipping (or Delivery) Time depends on the Shipping Method.
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The expansion board acts as a drive expansion board for engraving machines and 3D printers. It has four slots and can drive four A4988 stepper motors. Each road stepper motor requires only two IO ports. In other words, six IO ports can manage three stepper motors very well. It is very convenient to use. UNO introduces the IO port communication of the Arduino module.
Note: This version is not included in the A4988 module and the UNO R3 module!
IO corresponding pin:
UNO stands for Arduino ---------------------- Expansion Committee;
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 step control);
3 ---------------------- Y.STEP (Y-axis step control);
2 ---------------------- X.STEP (X-axis step control);
The following is a simple stepper motor control program,
#define EN 8 //Stepper motor enabled, 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 step control;
#define Y_STP 3 / / y -axis Step control;
#define Z_STP 4 / / z -axis step control;
/ *; // function: step. Function: Control the direction of the stepper motor, the number of steps.
//Parameter: dir direction control, dirPin corresponds to stepper motor DIR pin, stepperPin corresponds to stepper motor stepping pin, step progress number has no return value.
* /
Void step(boolean dir,byte dirPin,byte stepperPin,int steps)
Delay (50);
For(int i = 0; i digitalWrite(stepperPin,HIGH);
digitalWrite(stepperPin, LOW);
Void setup(){/ / The stepper motor used in the IO pin is set to output
pinMode(X_DIR, OUTPUT); pinMode(X_STP, OUTPUT);
pinMode(Y_DIR, OUTPUT); pinMode(Y_STP, OUTPUT);
pinMode(Z_DIR, OUTPUT); pinMode(Z_STP, OUTPUT);
digitalWrite(EN, LOW);
Void loop(){
Step (false, X_DIR, X_STP, 200); // The X-axis motor reverses 1 ring, and the 200 step is a circle.
Step (false, Y_DIR, Y_STP, 200); // The y-axis motor reverses 1 ring, and 200 steps is a circle.
Step (false, Z_DIR, Z_STP, 200); // z-axis motor reverses 1 ring, 200 steps is a circle.
Delay (1000);
Step (true, X_DIR, X_STP, 200); // The X-axis motor advances one revolution and the 200-step is one revolution.
Step (true, Y_DIR, Y_STP, 200); // The y-axis motor advances one revolution, and the 200 steps are one revolution.
Step (true, Z_DIR, Z_STP, 200); // The z-axis motor advances one revolution, and the 200-step is one revolution.
Delay (1000);
Note: When inserting the A4988 module, be careful not to insert the opposite side. The stepper motor wiring is as follows:
In Fig. 2A, 2B is a group (red, green), 1A, 1B is a group (blue, yellow), if you want to change direction, you can change the position of a group, for example 2A, 2B exchange.


Dimensions and Weight

Product weight: 0.0300 kg
Package weight: 0.0300 kg

Package Contents

Package Contents: 1 x set of A4988 driver board

CNC Shield V3 3D Printer Expansion Board A4988 Driver Board - Red 1pc

CNC Shield V3 3D Printer Expansion Board A4988 Driver Board - Red 1pc

CNC Shield V3 3D Printer Expansion Board A4988 Driver Board - Red 1pc

CNC Shield V3 3D Printer Expansion Board A4988 Driver Board - Red 1pc

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There are two key factors which will affect the time you receive your items.

Item processing time
After receiving your order,we require some time to test the product to ensure its quality.The exact processing time varies depending on the item.The average processing time is 3 working days.but this can also be affected by the item's stock status. For small quantity orders,the processing time is 1-3days while larger quantity orders may require 2-5days.
Shipping methods
China Warehouse:
Shipping Type Country or Region Arrive within 1-7 Days Arrive within 8-15 Days Arrive within 16-30 Days Arrive within 31-45 Days Average Time (Days)
Unregistered Air Mail or Registered Air Mail United States 0.52% 23.78% 69.62% 5.87% 25.63
Spain, United Kingdom, Italy, Germany, France & Portugal 1.58% 35.8% 56.84% 5.57% 26.39
Netherlands, Greece, Poland, Hungary, Slovakia, Czech Republic 5.59% 24.44% 55.84% 13.00% 27
Russia 0% 0.04% 64.94% 30.02% 39.53
Japan, Korea 0% 21.30% 68.80% 9.66% 23
Brazil 0% 0% 23.91% 72.09% 38.6
Thailand, Singapore & Malaysia 0% 18.38% 54.27% 25.34% 19.03
Other countries 0.7% 38.79% 47.94% 8.56% 23.57
Priority Line United States 0.43% 33.18% 65.07% 0.5% 16.43
Spain, United Kingdom, Italy, Germany, France & Portugal 2.55% 18.21% 35.65% 34.27% 26.31
Russia 0% 0% 32.6% 65.4% 36.07
Australia 7.67% 86.60% 5.68% 0% 11
Korea 35.54% 44.45% 19.32% 0% 11.65
Japan 95.80% 2.09% 0% 0% 6.84
Thailand, Singapore & Malaysia 58.96% 41.04% 0% 0% 8.45
Other countries 22.33% 30.8% 27.62% 17.64% 18.65
Expedited Shipping ALL countries(EMS) 3.8% 46.8% 26% 15% 14.8
ALL countries(DHL) 65.8% 25.75% 3.86% 0.37% 6.72
GW Warehouse: Typically 3-5 days to the UK, 3-7days to other European countries.
USA Warehouse:Generally, 3-7 days to a USA address.
ES Warehouse:Generally, 2-5 days to the Spain ,3-7 days to the Portugal.
Shipping from warehouse nearest to shipping address is faster. Additional charges may apply.
Note:This is a general guide and delays maybe caused force majeure, natural disasters, inclement weather, war, public holidays, and factors outside our control.

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