Arduino Stepper Motor Control

Wiring Instruction 1

Hardware Preparation

  • Stepper Motor Driver Board
  • Arduino Board (UNO)

If you have purchased the Arduino Board from ZTW, we have already uploaded the g-code library for you. If you are using your own Arduino Board, you can doawnload grbl Arduino library online and load it to your board using xloader.

  • Power Supply

The power supply is used to give the power to stepper motor driver board.

  • USB Cable (A Male – B Male/Printer USB Cable)

A USB cable is need to connect the Arduino board to your computer. An A Male to B Male USB cable will be used, the one usually used for printer USB connection. If you really cannot find one, here is the link you can purchase.

Wiring InstructionWiring Instruction 1

This is the diagram we will be following in order to use the Arduino to control our stepper drivers. You will use an Arduino Board(UNO) as a controoler, 3 stepper motors and drivers, a DC power supply and a laptop computer.640px Arduino Wire 001 2

First, attach a power cord to your power supply. Please check your outlet voltage, change the 110 – 220V setting on your PSU if necessary according to PSU you are using.640px Arduino Wire 002

Now we need to connect the PSU’s DC output (12V) to stepper motor driver. To illustrate this better, we are using red wire for positive and black for negative connections.

640px Arduino Wire 003

We are going to wire positive terminals on all three stepper motor drivers together, and same for negative terminals. Here you can see the positive(red) wire from the PSU as well as another red wire(jumper) to our first stepper driver.

Here is how the power wires will be connected from PSU to all three stepper drivers when it is done.640px Arduino Wire 005

Now we will start connecting the stepper singal lines to the Arduino. First we need to connect all “-Dir” and “-Pul” terminals together, these will be connected to the ground pin on the Arduino board.640px Arduino Wire 006

Now we will connect the signal ground to the Arduino Board ground.640px Arduino Wire 007

Here is a closer look at the Arduino board ground pin connection.640px Arduino Wire 008

Now the “+Pul” for X axis will be connected to Arduino board pin 2.640px Arduino Wire 009

And the “+Dir” for X axis will be connected to Arduino board pin 5.640px Arduino Wire 010

640px Arduino Wire 011

Now let’s connect Y axis, “+Pul” will be connected to Arduino Pin3, and “+Dir” need to be connected to Pin6.640px Arduino Wire 012

For Z Axis, connect “+Pul” to Pin4, and “+Dir” to Pin7.640px Arduino Wire 013

All stepper sigal wires have been connected between the stepper drivers and Arduino Board.640px Arduino Wire 014

Now we need to connect the stepper motors to the driver boards. Detailed information on our Shinano Stepper Motors can be found here: http://www.shinano.com/motors/stepper.html640px Arduino Wire 015

First, we need to identify the two wires that belong to the same loop. A multimeter can be used here. If you have our Unipolar stepper motor(Shinano NEMA17), two center wires will not be used.(black & white)640px Arduino Wire 016

The motors wires have been connected to stepper driver’s “A+”, “A-” and “B+” “B-”The motors wires have been connected to stepper driver

Stepper Motors for all three axis have been connected to their driver boards.Stepper Motors connected to their driver boards.

If you already have installed the software (below), then you are ready to connect the Arduino board to the computer through USB cable.

Software InstallationSoftware Installation

ArduinoControl 001:
In This tutorial, we will be walking you through one way to control your CNC machine with an Arduino.
The first thing you will want to do is to navigate to http://arduino.cc in your web browser.ArduinoControl

ArduinoControl 002:
Navigate or click on the download tab.Navigate or click on the download tab

ArduinoControl 003:
Choose the proper download for your machine. Note- the software we will be using to send
G-Code to the arduino is currently only available in Windows.640px ArduinoControl 004

ArduinoControl 004:
Click open.640px ArduinoContro l005

ArduinoControl 005:
Choose where you would like to download the file.download the file

ArduinoControl 006:
Wait for the download to complete.Wait for the download to complete

ArduinoControl 007:
Once the download has completed, click open.

ArduinoControl 008:
The arduino software downloads as a zip file, so we will need to extract the files. arduino software downloads as a zip file so we will need to extract the files

ArduinoControl 009:
Right click on the folder, and choose extract all.Right click on the folder and choose extract all

ArduinoControl 010:
Choose the destination where you would like to extract the arduino
folder and click extract.640px ArduinoControl 011

ArduinoControl 011:
Let the files extract, it will take a few moments.Let the files extract it will take a few moments

ArduinoControl 012:
Now that the folder has been extracted, open it.Now that the folder has been extracted open it

ArduinoControl 013:
Double click the arduino application.Double click the arduino application

ArduinoControl 014:
Next we will have to navigate to our device manager, where you should see your arduino.640px ArduinoControl 015

ArduinoControl 015:
Right click on the arduino device, and choose “update driver software”.Right click on the arduino device

ArduinoControl 016:
Now we want to choose “Browse my computer” for driver software.640px ArduinoControl 017

ArduinoControl 017:
Click browse.Click browse

ArduinoControl 018:
Navigate to your recently extracted Arduino folder and click OK.Navigate to your recently extracted Arduino folder and click OK

ArduinoControl 019:
Choose next.Choose next

ArduinoControl 020:
Your driver will now be updated.Your driver will now be updated.

ArduinoControl 021:
If windows gives you this security alert- choose “install this driver software anyway”. install this driver software anyway

ArduinoControl 022:
The driver should continue installing.The driver should continue installing

ArduinoControl 023:
You should get a window that says the driver was updated successfully. Click close. driver was updated successfully 1

ArduinoControl 024:
The device should now be shown in your device manager with the correct COM port.The device should now be shown in your device manager with the correct COM port

ArduinoControl 025:
Now navigate to https://github.com/OttoHermansson/GcodeSender/downloads
in your web browser. Then click on the GCodeSender.exe download link.640px ArduinoControl 026

ArduinoControl 026:
Choose run when prompted.Choose run when prompted

ArduinoControl 027:
Choose your save destination.Choose your save destination

ArduinoControl 028:
Once download has completed, select “open folder”.Once download has completed select open folder

ArduinoControl 029:
Now double click the GCodeSender application.Now double click the GCodeSender application

ArduinoControl 030:
If prompted with a security warning choose “run”.If prompted with a security warning choose

ArduinoControl 031:
Once in GCodeSender click the “Open” button.Once in GCodeSender click the Open button

ArduinoControl 032:
Be sure the \r\n bubble is selected.Be sure the r n bubble is selected

ArduinoControl 033:
Type a “$” without the quotes into the command bar and hit enter.without the quotes into the command bar and hit enter

ArduinoControl 035:
You should get a list of settings that you can alter to fit your application. To change the “x” step/mm for example, type $0 = 400 or whatever your steps per mm needs to be, and then hit enter. The same can be done for any of the other settings.
Next you should test your settings by typing for example X10 then hit enter. Your machine should move 10mm in the positive “X” direction. You can similarly test the other axis the same way. Just replace X with the axis of choice.
Depending on the machine and configuration used, it may be necessary to set the axis motion direction opposite of its current setting. This is accomplished by setting the invert mask within the grbl controller. As of version .8c the command is $6=”X”, older versions used $7=”X”, where X is the value the direction(s) needing to be reversed from the following list (“None = 0, X=32, Y=64, X+Y=96, Z=128, X+Z=160, Y+Z=192, X+Y+Z=224”) if I needed to reverse the Y axis I would enter command $6=64
Another useful tool is Grbl controller 3.5 available at

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