Dual Bipolar Stepper Motor Shield for Arduino (A4988) With Xbee Communication Socket

INTRODUCTION

Do you want to do some projects with stepper motors such as an auto

curtain,  a XY Plotter, or a 3D printer? Generally, it's not an easy thing to

drive stepper motor(s) with Arduino; but with this stepper motor shield, you

can easily control 2 stepper motors via just 4 digital I/O’s. This board is

compatible with the Arduino UNO R3, and get direct support with Xbee and

Xbee form factor Wi-Fi, Bluetooth and RF modules. Easy connection of

cables via screwless PC terminals. Each stepper motor has a code switch for

adjusting driving modes, to obtain different rotational speeds.The interfaces

of the board include extension 6 channel Analog I/O, 10 channel Digital I/O

& I2C.

The driver IC is using the most popular A4988 which is widely used in 3D

printer and CNC machine.  The A4988 is able to control one bipolar stepper

motor at up to 2 A output current per coil.  With one mega and DFRobot's

mega expansion shield, a 3D printer control board can be built so much eaiser.

Here are key features for A4988 stepper motor drivers

• Simple step and direction control interface

• Five different step resolutions: full-step, half-step, quarter-step, eighth-step,

     and sixteenth-step

• Adjustable current control lets you set the maximum current output with a

     potentiometer, which lets you use voltages above your stepper motor’s rated 

     voltage to achieve higher step rates

• Intelligent chopping control that automatically selects the correct current 

     decay mode (fast decay or slow decay)

• Over-temperature thermal shutdown, under-voltage lockout, and 

      crossover-current protection

• Short-to-ground and shorted-load protection

FEATURES

• Easily control 2 stepper motors with only 4 digital I/Os.

• Fully compatible with Arduino UNO R3、Leonardo、Mega and supports 

      XBee，XBee Wi-Fi，Bluetooth and RF modules.

• 6 Analog / 10 Digital & I2C

• Screwless connection with press and connect. For detailed pin mapping

     please refer to product wiki.

• Each stepper motor has a switch for mode switch to obtain different rotational

     speed. Step modes include 1, 1/2, 1/4, 1/16.

• Wireless switch next to Xbee. "PROG" mode for USB uploading and "RUN" 

      mode for wireless communication.

SPECIFICATION

• Input Voltage：8-35V DC(Just power the stepper motor driver)

• Press to connect cables, quick and easy

• Digital I/O:D4,D5,D6,D7

• 10 channel digital I/O&6 channel Analog I/O addition

• A4988 microstepping bipolar stepper motor driver

• Adjustable current limiting

• Up to 2 A output current per coil

• Five different microstep resolutions (down to 1/16-step)

DOCUMENTS

• Product Wiki     

• Schematic            

• A4988 Datasheet