How to get Gcode in matlab ?

i want to run my laser machine over a particular path for that i need gcode. so how it can be done in matlab ?

Answer 1

[Walter Roberson]

http://www.instructables.com/id/Typography-for-CNC-Machines-Text-to-Gcode-Function/

[khushboo chhikara]

I want for line not text ! Is there any code for line ?

[Walter Roberson]

All of the 'lent' entries in that file are indicating straight line cuts. All of the 'tourHoraire' and 'tourAntihoraire' are indicating arc cuts. All of the 'rapide' entries in that file indicate movement.

See https://www.tormach.com/g_code_table.html for the reference material.

In summary: Emit a G0 to move to a position. Emit a G01 to draw straight. Emit a G02 to turn clockwise, and G03 to turn counter-clockwise.

You need to decide whether you want to cut your shapes into the sheet, or if you want to cut everything away except your shapes.

[khushboo chhikara]

i have a gcode for this line ... now how can use that gcode in matlab to move my machine attached with arduino.

[Walter Roberson]

How is your arduino attached to your MATLAB host? How is your CNC attached to your arduino? Do you have two serial ports on your arduino, one to talk to MATLAB and the other to talk to the CNC?

[khushboo chhikara]

Arduino is attached using the matlab ad-ons ...and my laser machine is connected to arduino.

[Walter Roberson]

Are you using:

• a very old PC with a DB25 parallel connector and parallel to serial adapter to connect to the arduino
• an old PC with a DB25 RS232 connector to connect to the arduino
• a less-old PC with a DB9 connector to connect to the arduino
• a PS/2 DIN-6 port with a PS/2 to DB9 adapter to connect to the arduino
• a USB port with a USB to serial adapter to connect to the arduino
• a USB port to a USB port on the arduino
• a USB port with a USB to TTL adapter connecting to a TTL port on the arduino
• a pair of zigbees connecting the PC to the arduino
• regular wifi on the PC connecting to a zigbee connected to the arduino
• ethernet connecting the PC to the arduino directly
• PC and arduino are both connected by ethernet by way of a hub or switch
• something else?

[khushboo chhikara]

a USB port to a Usb port in the arduino.

[khushboo chhikara]

Picture

[Walter Roberson]

I cannot tell which model of arduino you are using. You appear to have some kind of red DC Shield on top but I do not seem to find a match for it (the ones I can find do not say "DC Shield" in the same position.)

Based upon what I can make out from the picture, it looks to me as if you are not using USB to connect from the arduino to that white device: the connection appears to on some kind of DIN connector.

[khushboo chhikara]

that white wire is a USB connector. i am using arduino uno and above that a cnc shield is used.

[khushboo chhikara]

any help ?

[Walter Roberson]

Are you using https://github.com/grbl/grbl

[Walter Roberson]

You could probably use serial() to open a serial port connection to the COM port that the arduino is on, and then send it the gcode strings. It looked to me as if that software would accept the strings and act on them.