# Im having issues with getting the laser to burn **URL:** \ **Category:** Creality\ **Tags:** firmware, windows\ **Created:** [August 27, 2025, 11:28am UTC](https://forum.lightburnsoftware.com/t/im-having-issues-with-getting-the-laser-to-burn/178591 "2025-08-27T11:28:15Z")\ **Posts on this page:** 11\ **Page:** 1
**Author:** ![GordoGuy](https://forum.lightburnsoftware.com/user_avatar/forum.lightburnsoftware.com/gordoguy/32/110549_2.png) [@GordoGuy](https://forum.lightburnsoftware.com/u/GordoGuy)\ **Post date:** [August 27, 2025, 11:28am UTC](https://forum.lightburnsoftware.com/t/im-having-issues-with-getting-the-laser-to-burn/178591/1 "2025-08-27T11:28:15Z")
I’m using an Ender 3 S1 with the 5W laser engraver add-on, running professional firmware version 2.1.3. I’m connected to the machine via USB. In LightBurn, I can move the laser, but when I start a job, it runs without burning the design. I’ve tried switching between M3/M4 and M106/M107, and changing the “S” value from 255 to 1000, but it still doesn’t burn. I’m new to laser engraving and LightBurn, so im not really sure what i’m doing. Any help would be greatly appreciated. ---
**Author:** ![misken](https://forum.lightburnsoftware.com/user_avatar/forum.lightburnsoftware.com/misken/32/47593_2.png) [@misken](https://forum.lightburnsoftware.com/u/misken)\ **Post date:** [August 27, 2025, 11:52am UTC](https://forum.lightburnsoftware.com/t/im-having-issues-with-getting-the-laser-to-burn/178591/2 "2025-08-27T11:52:25Z")
What is a “professional” firmware? Never heard of that. What flavor is that firmware of? Marlin? Which type did you select in LightBurn? ---
**Author:** ![GordoGuy](https://forum.lightburnsoftware.com/user_avatar/forum.lightburnsoftware.com/gordoguy/32/110549_2.png) [@GordoGuy](https://forum.lightburnsoftware.com/u/GordoGuy)\ **Post date:** [August 27, 2025, 12:04pm UTC](https://forum.lightburnsoftware.com/t/im-having-issues-with-getting-the-laser-to-burn/178591/3 "2025-08-27T12:04:05Z")
I’m on the free trial of light burn, flavor is Marlin, and the Professional firmware I got from Github Not sure too much about it Other than it has a lot more features Then what My machine came with And laser engraving is one of the features ---
**Author:** ![ednisley](https://forum.lightburnsoftware.com/user_avatar/forum.lightburnsoftware.com/ednisley/32/40455_2.png) [@ednisley](https://forum.lightburnsoftware.com/u/ednisley)\ **Post date:** [August 27, 2025, 12:58pm UTC](https://forum.lightburnsoftware.com/t/im-having-issues-with-getting-the-laser-to-burn/178591/4 "2025-08-27T12:58:18Z")
> [@GordoGuy](#): > > it runs without burning the design If the laser lights up at all, the machine is likely running too fast to make an impression. Set the [speed units](https://docs.lightburnsoftware.com/2.0/Reference/DeviceSettings/DimensionsUnits/) to `mm/min`, rather than `mm/s` or `in/min`, then run a [`Material Test`](https://docs.lightburnsoftware.com/2.0/Reference/MaterialTest/) with speeds from about 10 mm/min up through 1000 mm/min. ---
**Author:** ![GordoGuy](https://forum.lightburnsoftware.com/user_avatar/forum.lightburnsoftware.com/gordoguy/32/110549_2.png) [@GordoGuy](https://forum.lightburnsoftware.com/u/GordoGuy)\ **Post date:** [August 27, 2025, 6:06pm UTC](https://forum.lightburnsoftware.com/t/im-having-issues-with-getting-the-laser-to-burn/178591/5 "2025-08-27T18:06:33Z")
Hello, sorry for the late reply. The laser does come on, but I have to turn it on from the machine itself. I can’t turn it on or off from LightBurn or do anything with the laser beam itself. Everything works perfectly in LightBurn; I can move the laser around, send it to the home position, and it will even start a design and run through the whole thing as if it’s burning it, but the laser is stuck at the low test power. ---
**Author:** ![ednisley](https://forum.lightburnsoftware.com/user_avatar/forum.lightburnsoftware.com/ednisley/32/40455_2.png) [@ednisley](https://forum.lightburnsoftware.com/u/ednisley)\ **Post date:** [August 27, 2025, 6:23pm UTC](https://forum.lightburnsoftware.com/t/im-having-issues-with-getting-the-laser-to-burn/178591/6 "2025-08-27T18:23:13Z")
> [@GordoGuy](#): > > the Professional firmware I got from Github A link to that would help, as it seems likely there’s a firmware and hardware mismatch. Have you run through the GRBL configuration help? > **[GRBL Configuration - LightBurn Documentation](https://docs.lightburnsoftware.com/2.0/Guides/GRBLConfiguration/)** > > Better software for laser cutters ---
**Author:** ![GordoGuy](https://forum.lightburnsoftware.com/user_avatar/forum.lightburnsoftware.com/gordoguy/32/110549_2.png) [@GordoGuy](https://forum.lightburnsoftware.com/u/GordoGuy)\ **Post date:** [August 27, 2025, 7:54pm UTC](https://forum.lightburnsoftware.com/t/im-having-issues-with-getting-the-laser-to-burn/178591/7 "2025-08-27T19:54:39Z")
> **[GitHub - mriscoc/Ender3V2S1: This is optimized firmware for Ender3 V2/S1 3D...](https://github.com/mriscoc/Ender3V2S1)** > > This is optimized firmware for Ender3 V2/S1 3D printers. ---
**Author:** ![ednisley](https://forum.lightburnsoftware.com/user_avatar/forum.lightburnsoftware.com/ednisley/32/40455_2.png) [@ednisley](https://forum.lightburnsoftware.com/u/ednisley)\ **Post date:** [August 27, 2025, 9:28pm UTC](https://forum.lightburnsoftware.com/t/im-having-issues-with-getting-the-laser-to-burn/178591/8 "2025-08-27T21:28:59Z")
> [@GordoGuy](#): > > optimized firmware for Ender3 V2/S1 3D printers. It seems optimized for _3D printing_, but the wiki doesn’t include anything related to “engraving”, “laser”, “speed”, or “spindle”, so it’s not obvious how this will improve the machine for laser use. Unless you have a compelling reason, reverting to the stock Ender firmware seems a better idea, if only because everybody around here will offer suggestions based on _assumptions_ the firmware behaves in the usual way. ---
**Author:** ![GordoGuy](https://forum.lightburnsoftware.com/user_avatar/forum.lightburnsoftware.com/gordoguy/32/110549_2.png) [@GordoGuy](https://forum.lightburnsoftware.com/u/GordoGuy)\ **Post date:** [August 28, 2025, 9:35pm UTC](https://forum.lightburnsoftware.com/t/im-having-issues-with-getting-the-laser-to-burn/178591/9 "2025-08-28T21:35:31Z")
Yeah, that’s what I did. Reverted back to the stock firmware, and now I can’t control anything in LightBurn. So, I think I’m going to re-download my professional firmware and just move on. I was just on the free trial, so I’m not out anything, but thank you for your help. ---
**Author:** ![GordoGuy](https://forum.lightburnsoftware.com/user_avatar/forum.lightburnsoftware.com/gordoguy/32/110549_2.png) [@GordoGuy](https://forum.lightburnsoftware.com/u/GordoGuy)\ **Post date:** [August 28, 2025, 9:39pm UTC](https://forum.lightburnsoftware.com/t/im-having-issues-with-getting-the-laser-to-burn/178591/10 "2025-08-28T21:39:05Z")
> **[Release CV Laser Module (CVLM) · mriscoc/Special\_Configurations](https://github.com/mriscoc/Special_Configurations/releases/tag/CVLM)** > > WarningThis is a placeholder. Do not download the zipped source code from here, if you want to build your own firmware, download the zip file from the main page of the repository and use the Config... ---
**Author:** ![GordoGuy](https://forum.lightburnsoftware.com/user_avatar/forum.lightburnsoftware.com/gordoguy/32/110549_2.png) [@GordoGuy](https://forum.lightburnsoftware.com/u/GordoGuy)\ **Post date:** [August 29, 2025, 1:55am UTC](https://forum.lightburnsoftware.com/t/im-having-issues-with-getting-the-laser-to-burn/178591/11 "2025-08-29T01:55:59Z")
Sorry the first link was from an earlier version of the firmware. This link contains the add-on laser Module.