How to Make GRBL + CNC V3 Shield Based Mini CNC

Description

This CNC is based on GRBL0.9 Firmware and CNC V3 shield GRBL is Hacked for Z-axis Servo.

Details

Step 1

This CNC is based on GRBL0.9 Firmware and CNC V3 shield GRBL is Hacked for Z-axis Servo.

CNC Shield & GRBL combinly works very preciselyIt is loaded with very useful functions like Hard limit, Soft limit, Homing, etc

This is about how to make

GRBL+CNCV3 shield+Arduino based CNC machine

This guide include all necessary instruction required

like How to assemble CNC machine

How to Load GRBL to arduino

Inkscape extension installation

GRBL Configuration & G-code streaming

It is loaded with very useful functions like Hard limit, Soft limit, Homing, i will guide you in detail how to Make GRBL Based mini CNC machine at home

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Step 1: Watch Video to Know How to Make

Watch this video it will clear you how to make and operate CNC machine

Step 2: Material Required

This are the list of some use full material required

• Arduino UNO--------------------------------------QTY- 1
• CNC V3 Shield------------------------------------QTY-1
• servo motor----------------------------------------QTY-1
• A4988 Stepper driver shield--------------------QTY-2
• Old scrap DVD Drives---------------------------QTY-2
• Some push buttons as limit S/W---------------QTY-2
• A acrylic sheet for base
• Pen holder (slavege from DVD Drive)
• Some wires
• Hardware like nut bots etc.

Step 3: Software Required

1. Arduino IDE

GRBL LIBRARY :- Click here to download

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2. INKSCAPE

SERVO CONTROL EXTENSION :-Click here to download

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3. UNIVERSAL G-CODE SENDER : - Click here to download

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Step 4: Machine Assembley

3 More Images

• Place X-axis Horizontally on the bolt mounted on acrylic sheet
• Four bolt mounted on a metal sheet to fit Y-axis on it
• Now place the Pen up down holder on y axis whit the help of A bolt through the center
• Now place Y-axis on metal sheet and place it vertically on X-axis
• Now fit servo motor so that it will move z-axis which is our pen up and down
• Now mount CNC shield on Ardunino
• Do wiring A shown in wiring circuit as in Next step

For better understand please watch Video & pic attached here

Step 5: Wiring Diagram

Do wiring as shown here in image

Limit switch are optional

You can use them by changing the GRBL setting as below

$21=0 (hard limits, bool)

to

$21=1 (hard limits, bool)

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Step 6: GRBL Loading to Arduino

Link to download GRBL Setup

http://www.mediafire.com/file/c36xny4qw9b7s5k/MI_G...

Download the library file unzip it

and load to arduino

Now go to File>Example>grbl upload compile and upload code to arduino

Note:- delete any previously loaded GRBL library

Step 7: G-CODE Setup in Inkscape

Again we are using here INKSCAPE software to make G-code

As we are using GRBL & CNC Shield for this machine s

o it will not support a servo motor as a Z-Axis

so here some hack by doing so we can able to manage Servo works on Z-axis

you need to add MI Extension here to get it work with Z-axis Servo

Download link http://www.mediafire.com/file/nl4w871suk192x2/MI_...

after download add this files to the

inkscape directory>Share>Extension folder

Now open inkscape set page size 40 x 40mm

draw what you want to plot

select image go to convert to path

then go to extension click on MI GRBL Z-AXIS SERVO CONTORL

Servo up = M3

Servo down = M5

X-axis speed = 2000

Y-axis speed = 2000 S

ervo angle = 90

Delay = 1

Directory = as per you convenient or keep...

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Build instructions

Step 1