DRI0023

  Stepper Motor Shield For Arduino(DRV8825) SKU:DRI0023 From Robot Wiki    Stepper Motor Shield For Arduino  Contents     1 Introduction  2 Specification  3 Pin Out& Diagram  4 Sample code  Introduction Do you want to do some projects with stepper motors such as a drafting instrument, a 3D printer, an auto curtain, etc...? As we all know, regular stepper motors are hard to drive, but with this stepper motor shield, you can easily drive 2 stepper motors via just 6 digital I/O’s. This board is compatible with the Arduino UNO R3. Directly supports 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. Interfaces of the board include extension 6 channel Analog I/O, 8 channel Digital I/O & I2C. Stepper motor is a brushless DC electric motor that divides a full rotation into a number of equal steps. The motor's position can then be commanded to move and hold at one of these steps without any feedback sensor (an open-loop controller), as long as the motor is carefully sized to the application in respect to torque and speed. Specification            Support 3.3V and 5V operating voltage  Suitable for two‐phase and four‐wire stepper motor  Board with two DRV8825 driver chip and a heat sink has been mounted.  Input Voltage：8.2‐45V DC (Just power the stepper motor driver), 1.6A output current per coil   Driving Pins: D4,D5,D6,D7,D8,D12  Squeeze connector, quite easy and convenient.  8 channel digital I/O pins & 6 channel Analog input pins  DRV8825 Microstepping bipolar stepper motor driver  Six different microstep resolutions (full‐step, 1/2‐step, 1/4‐step, 1/8‐step, 1/16‐step, 1/32‐step)  Compatible with Arduino UNO R3, Leonardo, Mega and other controllers, with full port  extensions. Support XBee, XBee Wi‐Fi, Bluetooth and RF modules, ensure that the needs of your  wireless communications.  There is a switch on the board Xbee wireless interfaces corner. PROG stop wireless module,  available USB programming. RUN time can use the wireless communication module.  Pin Out& Diagram  Stepper Motor Shield For Arduino(DRV8825)   Wireless program switch:   o RUN: Turn the Switch here to use the Xbee module  o PROG: Turn the Switch here to upload the sketch via USB   Motor wiring diagram：  Motor wiring diagram   The new version expand two enable pins, you can enable/disable the motor driver to save the  power consumption, Motor X enable pin for the D8, Motor Y enable pin for the D12, low voltage  enable, the following truth table:  D8  D12  M1  M2   Low   Low   ENABLE  ENABLE   High   Low   DISENABLE  ENABLE   Low   High   ENABLE   DISENABLE   High   High   DISENABLE   DISENABLE     Dip switch settings for Microstep resolution:  MS1  MS2  MS3  Microstep Resolution   Low   Low   Low   Full step   High   Low   Low   Half step   Low   High   Low   1/4 step   High   High   Low   1/8 step   Low   Low   High   1/16 step   High   Low   High   1/32 step   Low   High   High   1/32 step   High   High   High   1/32 step   IO voltage select   o Change the the position of the jumper cap according to your Main board operating  voltage.  More details      Squeeze connector makes connection easily and quickly.  The other form of connector for XH2.54 or female headers   Sample code /* This sample code is for testing the 2 stepper motors The rotation velocity can be adjusted by the code switch Microcontroller: Arduino UNO */ int M1dirpin = 7; //Motor X direction pin int M1steppin = 6; //Motor X step pin int M1en=8; //Motor X enable pin int M2dirpin = 4; //Motor Y direction pin int M2steppin = 5; //Motor Y step pin int M2en=12; //Motor Y enable pin void setup() { pinMode(M1dirpin,OUTPUT); pinMode(M1steppin,OUTPUT); pinMode(M1en,OUTPUT); pinMode(M2dirpin,OUTPUT); pinMode(M2steppin,OUTPUT); pinMode(M2en,OUTPUT); digitalWrite(M1en,LOW);// Low Level Enable digitalWrite(M2en,LOW);// Low Level Enable } void loop() { int j; delayMicroseconds(2); digitalWrite(M1dirpin,LOW); digitalWrite(M2dirpin,LOW); for(j=0;j