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How to make your own laser marker with a galvoscanner

An Endurance DIY galvo marking machine

3D printed parts

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EZcad settings

 

DIY LASER GALVO CONTROLLER – ALL YOU NEED TO KNOW

A detailed assembling instruction

 

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An endurance DIY DPSS GALVO scanner can be made with 3d printed parts. This DIY GALVO guide will show you have to create your galvo scanner and get it to function properly. A galvanometer is an electrical instrument used for measuring small current. Forces from the current cause a rotation of a moving coil. Galvos don’t require any limit switches and they are controlled with absolute coordinates. Movement and positioning are very important with the galvo so it should be properly aligned with the laser and the beam expander should be correctly installed. To begin, you will first need to 3d print all the parts required. What you will find is a lifting surface table, 4 adjustable legs, mount for galvo, laser holder, PWM, and connector,

 

All the required 3D printable parts are available on the Endurance Thingiverse

The first part is installing the four legs onto the table.

Use M3 screws to attach each adjustable leg to the table. The legs are adjustable to make it closer to the surface. The legs should be fixed on the maximum length.

How to make your own laser marker with a galvoscanner

 

CONNECTING THE GALVO AND LASER

The next step is attaching the galvo head with the 3d printed mount. Once mounted, the galvo head can fit into the center of the table. It is now possible to connect the laser to the galvo head.

How to make your own laser marker with a galvoscanner

 

With the galvo on top of the table and in the center of the table, face it towards the screw slots and add the 3D printed bottom of the laser headcover.

How to make your own laser marker with a galvoscanner

 

The laser headcover has 2 pieces that will cover the extender of the laser head and you will need for the laser head to connect to the galvo. Once you attach the bottom piece for the laser head put the laser inside of the laser holder.

How to make your own laser marker with a galvoscanner

 

ALIGNING THE LASER AND GALVO

The laser height should be the same as the laser table and the laser and the galvo need to be aligned. Use the leg of the laser holder to adjust to the exact height. After this, put the top cover of the laser cover that fits on top of the extender.

you close it with the top of the 3D printed cover. It should now all connect well to the Galvo mount.

 

WIRING YOUR GALVO

Wiring you Galvo is a seamless process.

With an LPT connector, make a connection to the galvo.

How to make your own laser marker with a galvoscanner

 

The LPT cable for PWM( Pulse-width modulation) connects to the DPSS laser module.

How to make your own laser marker with a galvoscanner

Next,

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Power on!

 

SOFTWARE

Use EzCad software to detect and use the laser.

You will need to find the focus on the laser. This is done by running the laser on minimum power. The regulation can be flipped to see where the laser point appears. You will be able to see and also hear the focus with a crinkling sound. Check the laser

Calibrate the laser pointer with the original laser beam.

Param>Other>Red light pointer> The Parameter that should be set for the pointer to be with the original laser beam is X-6MM and Y-19MM.

 

Testing beam expander

DIY GALVO 1

Check the beam expander is installed correctly by turning on the laser on low power and placing a cardboard sheet at a 20cm distance in front of the telescope. A complete bright round spot should be seen. If the point of the laser is scantly shining and barely showing a circle, then the beam expander is not properly aligned.

 

Turn on the laser at low power. Look at the cardboard through your smartphone’s camera. You should see a bright, round spot

If the spot is not completely round, then the beam expander is not properly aligned. It is necessary to loosen the screws that secure it, and slightly move it right-left-up-down to get the round spot.

Laser safety should also be remembered and the laser module should not be operated without knowing basic laser handling safety!

 

You will find the software package from Google Drive

Download Software 2.14.16 package from Google.Drive >>>

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Drivers for the board: drivers
EzCad with manual:  Ezcad2.14.10(20180103) (1)
Screenshot of settings for Raikus in EzCad. The settings are opened with the “Param” button at the bottom of the EzCad, or with the “F3” key. Laser Control tab.

You will be able to find an instructional video to make a DIY galvo system with 4 or 10waat DPSS laser How to make your own laser galvo marking machine. Fully 3D PRINTED! – YouTube

manual Ezcad 2 (eng)

 

Testing beam expander

Before attaching the laser to the galvanometer, you need to make sure that the beam expander is installed correctly. To do this, place a cardboard sheet in front of the telescope at a distance of 20 cm. Turn on the laser at low power. Look at the cardboard through your smartphone’s camera. You should see a bright, round spot (img3, img4).
If the spot is not completely round (img5), then the beam expander is not properly aligned. It is necessary to loosen the screws that secure it, and slightly move it right-left-up-down to get around the spot.

Download Software 2.14.16 package from Google.Drive >>>

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