CNC Circuit Mill/Manufacturing Instructions

1 Categorization Key

• The numbers left of each category refer to category strength, low-high being strong-weak. For example, 1 is stronger than 2.

• Stronger categories cover all weaker categories below it until a stronger or equally strong category is established. Examine the following.

1 Tools

2 Drill Bits

1 Materials

2 Bolts

2 Nuts

• The category Drill Bits is contained within Tools; the categories Bolts and Nuts are contained within Materials. Note that neither Materials nor Bolts nor Nuts are a part of Tools; Nuts is not a part of Bolts.

1 Replication

• Information resources required to construct different versions of the CNC Circuit Mill are saved in this section.

• Version 1 (not recommended, near-complete spreadsheet, poor instructions on webpage)

File:CNCCMV1Prep.ods

http://opensourceecology.org/wiki/CNCCMV1

2 Preparation

• The following active spreadsheet is for prototyping purposes only.

• To edit or download the spreadsheet, click on the following link.

https://docs.google.com/spreadsheet/ccc?key=0AlpsBarfpPkzdFk5aDY3dHM0eEhfZHNkWVppdV9EelE

3 Picture Repository

4 Getting Git

• Open Terminal and type:

sudo apt-get install git-core

4 Getting Arduino Integrated Development Environment

• Go to this webpage:

http://arduino.cc/hu/Main/Software

• Download the Linux 32-bit version of Arduino IDE to a directory of your choosing

4 Compatibilizing Arduino IDE

• The following steps are a summary of the information in this webpage:

http://www.pluggy.me.uk/arduino-ubuntu/

• Open System>Administration>Synaptic Package Manager, then type your password

• In Synaptic Package Manager, search for jre, then mark for installation the item with the following name:

Openjdk-6-jre

• Note: marking these items will bring up other packages also to be marked. Click "mark" during these times.

• In Synaptic Package Manager, search for gcc-avr, then mark for installation the item with the following name:

gcc-avr

• In Synaptic Package Manager, search for avr-libc, then mark for installation the item with the following name:

avr-libc

• In Synaptic Package Manager, click "Apply"

• Restart your computer

4 Getting RUBY Programming Language

• Open Terminal and type:

sudo apt-get install ruby1.9.1

• Restart the computer for the changes to take place

4 Getting GRBL Files

• Open Terminal and type:

git clone https://github.com/damellis/grbl.git grbl

4 Getting Gctrl

• Open Terminal and type:

git clone https://github.com/damellis/gctrl.git gctrl

4 Getting Processing

• Go to this webpage:

http://processing.org/download/

• Download the latest version of Processing to a directory of your choosing

4 Moving RXTX files

• Navigate to the Arduino IDE folder>lib.

• Copy RXTXcomm.jar

• Navigate to the Processing folder>modes>java>libraries>serial>library

• Paste RXTXcomm.jar, replacing the existing version

• Navigate to the Arduino IDE folder>lib

• Copy librxtxSerial.so

• Navigate to the Processing folder>modes>java>libraries>serial>library>Linux32

• Paste librxtxSerial.so, replacing the existing version

4 Modifying Gctrl

• Open the Gctrl folder

• Open gctrl.pde in gedit

• Change a part of the code as annotated in the following:

Serial port = null; //change starts

String portname = "/dev/ttyACM0"; // Linux, Arduino Uno

//change ends

boolean streaming = false;

4 Modifying GRBL Files

• Navigate to the GRBL folder

• Open "Makefile" in gedit

• Edit the PROGRAMMER line as:

PROGRAMMER = -c stk500v1 -P /dev/ttyACM0 -b 115200

4 Flashing GRBL

• Open Terminal and navigate to the GRBL folder (ex. by using the "ls" and "cd" commands)

• In Terminal, type:

make clean

make

• Connect the Arduino Uno to the computer via USB cable

• In Terminal, type:

make flash

• Disconnect the Arduino Uno

4 Running GRBL

• Navigate to the Processing folder

• Open and run Processing, setting the sketchbook folder as the folder in which the gctrl folder exists

• In Processing, open gctrl using File>Sketchbook>

• Connect the Arduino Uno to the computer via USB cable

• In Processing, run gctrl using Sketch>Run

• Note: For certain functions of gctrl, press and hold down the key for the popup windows to populate.

4 Determining GRBL Configuration Changes Required

• Go to the following webpage:

http://dank.bengler.no/-/page/show/5474_configuringgrbl?ref=mst

4 Modifying GRBL Settings

• Navigate to the Arduino IDE folder

• Double-click "Arduino" then click "run" in the popup window

• Note: you may want to create a quick launcher for the Arduino IDE

• Connect the Arduino Uno to the computer via USB cable

• In Arduino IDE, open Tools>Serial Monitor

• Note: the Serial Monitor window should pop up and you should see the following:

Grbl 0.6b

'$' to dump current settings

• In the Serial Monitor, change the left drop-down setting to the following:

Both NL & CR

• In the Serial Monitor, type the following in the command line:

$

• Note: you should now see the following:

$0 = 157.480 (steps/mm x)

$1 = 157.480 (steps/mm y)

$2 = 157.480 (steps/mm z)

$3 = 10 (microseconds step pulse)

$4 = 500.0 (mm/min default feed rate)

$5 = 600.0 (mm/min default seek rate)

$6 = 0.100 (mm/arc segment)

$7 = 0 (step port invert mask. binary = 0)

$8 = 25.0 (acceleration in mm/sec^2)

$9 = 225.0 (max instant cornering speed change in delta mm/min)

'$x=value' to set parameter or just '$' to dump current settings

• In the Serial Monitor, type commands as necessary in the following format, where "X" and "Y" are numbers:

$X = Y