Anet A8 3D Printer Laser Engraver Mod

by lokster Feb 12, 2017
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Hello! I'm using this laser : https://www.aliexpress.com/item/500mw-405NM-focusing-blue-purple-laser-module-laser-engraving-TTL-module-500mw-laser-tube-Laser-module/32562052620.html?spm=a2g0s.9042311.0.0.3da24c4d1jeQX2 connected to PWM/TTL at Fan1.

I have one problem, my laser is on all the time. I reversed the command 106 to 107 but nothing changed.

Is it possible to use a laser with PWM control? To get shades of grey?

The mod itself allows PWM control by using the M106 S[0-255] gcode command (0 = OFF, 255 = MAX).
So it all depends on the software you use to generate the gcode.
Currently it's not possible to do it with the inkscape plugin - you have to use other software.

I adapted my 3D printer to use a laser, but I could not find software that would fit inside the letters.
Thanks to your post I solved this.
Thank you

My project:

Hi, pretty cool project! I am interested in knowing if it would be possible to engrave a 3D part. Let's move the Z axis while engraving. Instead of powering down the laser power, the Z axis would move in order to have the laser always at the same distance to the part.

Couldn't you just drop in a more powerful laser with the same setup? The one I linked below operates on 5v as well and only draws one amp. Would this work?


Great tutorial. Thanks! Got my parts and assembled them today. But the dimensions are wrong. Everything is much smaller than it should be.
I set the dimensions to mm (both in the document options an the plugin windows). Any idea why this happens?
By the way: I made a Laser mount for the A2 and plublished it to thingiverse: https://www.thingiverse.com/thing:2449260

Laser Mount for Anet A2

i am having the exact same problem. The Prints are roughly 1/4 of the size i have set in inkscape (version 0.92) I am using an anet a8 with the stock firmware and a self constructed lasermount. Have you found a solution to fix this?

No, but I haven’t used the laser for quiet a while, so I didn’t look for a solution.

Problem Solved! It's not the Plugin that has a bug, but inkscape 0.92. I have tried it with inkscape version 0.91 and my laser is printing the correct size of the svg!

So I got the laser you mentioned in your tutorial. Though I am a little confused. It has the TTL but what I want to know is what is it for. Do I have to hook it up. What do I hook it up to. What if I don't hook it up. Do I have to use the resistor things you mention in your tutorial?