LaserBox : Decoupe et gravure laser , 2.8W

The Laser Box

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Video of the machine in action

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Goal : Creation of a cutting and engraving laser machine


First point : Excuse my very poor english , i hope you will understand my explanations...


For a long time I dreamed to play with a laser cutter.

I do not want to use CO2 Laser ( too hard to build and to setup).

So I choose a blue laser diode (445nm) for this job




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To control movements , switch ON and OFF and and adjust the laser power , i used a CNC X Pro controler board


cnc x pro.jpg




To make the frame i used some vslot profiles ( from vslot-europe.com)





I have cut specific parts using my CNC and make some other parts were made with my 3D printer.


[openbuilds.org]



The Laser Diode :


The laser Diode has a power of 2.8W ( diode + driver from chez JTech photonic)





With this diode you can cut Foam , Balsa , acrylic ( it is a bit long ..)

You can also engrave.


17201243752_53426df602_o.jpg




How to switch ON anf OFF the laser and adjust his power :


The lighting of the laser is done using M03 instruction ( gcode ) and to switch OFF laser you must use instruction M05

Power adjustement is done using S0 instruction (normally used for the spindle speed variation)


The change can be carried out on 255 levels( de 0 à 254 )


Your GRBL file must be compiled before being downloaded to the controller card with a maximum spindle speed of 254 and minimum spindle speed 0


mods to do to the config.h file of GRBL :

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#defineSPINDLE_MAX_RPM254.0// Max spindle RPM. This value is equal to 100% duty cycle on the PWM.

#defineSPINDLE_MIN_RPM0.0 // Min spindle RPM. This value is equal to (1/256) duty cycle on the PWM.


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Example : M03 S254 ( switch ON laser at full power )

M03 S127 (switch ON laser at 50% of power )

M05 ( switch OFF the laser )




Laser Driver Current Monitoring Via MicroController


You can find more information for this application on the jtech photonics website





[​IMG] tp.jpg 16285596264_244b8b795a_o.jpg




Standalone machine

I add to this project a Raspberry Pi ( with raspbian ) and a 7’ LCD screen ,

so the machine is fully autonomous


I use grblcontroller to send the Gcode







08/01/2015 : I try this build with 2 new electronic cards , 1 x Arduino Uno + gShield V5 and 1 x TinyG V8 , I think that the arduino + gshield V5 is the better choice because of the price and because we don't need all functionnality that come with the 2 other boards



If you have any questions please do not hesitate to contact me here or on the website www.vslot-europe.com

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[vslot-europe.com]
Forums and Ressources : [mytechno3d.com]

SAlut,

un kit de la bête est prévu ?

Paul

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Site perso en construction / personal blog under construction: [histoires-de-constructions.net]

bonjour
en francais sa donne quoi

Oui je peut faire des kits comprenant le châssis et la partie électronique , mais sans le laser car je ne connais pas suffisamment les normes européennes en la matiere pour en importer des US. Pour baisser un peu le prix , on peut aussi remplacer certaines parties usinees en alu par de l ABS ça serait esthétiquement sympa et ne poserait pas de soucis vu qu il n y a pas vraiment d effort sur ce type de machine.

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[vslot-europe.com]
Forums and Ressources : [mytechno3d.com]

Je redeterre ce post car j' ai enfin pris le temps de mettre en ligne les fichiers dxf pour pouvoir faire ce montage ..

Fichiers dispo ici : [mytechno3d.com]
( en fin de post )

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[vslot-europe.com]
Forums and Ressources : [mytechno3d.com]