Laser Grbl Download Windows
Lex Mumphrey
Currently (July 2022) is it easy to found laser module with powers from 1.5W to 20W.
Please read carefully! I am talking about optical power: the only real important value.
Their low power has the advantage of having a smaller focus point, allowing them to engrave with the finest level of detail. Machines that mount these lasers are generally cheaper and can be purchased for around $200-250
They are the standard laser diode found in mid-range models. Pay close attention to which focus lens they mount: it is important that they mount a FAC (fast axis collimation) lens.
These models are generally more expensive ($500 for 10W up to $900 for 20W machine) but they are the only ones that achieve truly comparable performance with CO2 lasers while maintaining incomparable compactness and manageability.
The cheapest machine with a 10W optical power laser is the Comgo Z1. It cost only 350$ and my review of this machine is available here. In my opinion, one of the best engraver for price/quality ratio ever!
The advantages of an air assist system are a greater depth of cut, a faster cut, and cleaner edges. It is also a great way to avoid dirtying the laser lens, as the flow of air drives away the combustion fumes (dirty and full of residues).
Made by two aluminium rail, capable of working on surfaces of about 20cm x 20cm. These machines are suitable for those who work small pieces, such as pens, wallets, photo frames. They are the cheapest machines and you will hardly find them with air-assist or powerful lasers because their shape does not allow to mount heavy modules.
Consisting of a square frame made of aluminum profiles, these machines are the most popular option. All well-known brands provide at least one model based on this design, but they are not all the same: for example some brand use plastic parts while others are full-metal design. Very important are also some details such as the presence of cables guides (drag chain) which prevent cables from bending under the laser head, burning and damaging the machine; and the presence of limit/homing switches.
Only a few brands offer this option, one of these is NEJE which also has an engraver capable of working on 81cm x 46cm surfaces. This is the Neje 3 MAX with 10W laser that has a very competitive price (considering it has the drag chain).
This kind of power is currently not achievable with diode technology, so you have to choose a CO2 laser machine. These machines are generally more expensive, larger, and more complex to use and most of them use their own control software.
The first, and of course, is that the laser has to slow down when changing direction. The second is that the machine may be configured with a lower speed limit (keep in mind that LaserGRBL signals it to you by framing the field in red).
Solution: make sure that the axes move smoothly and without resistance, that the screws are all tightened, that there is no mechanical backslash and that the belt are tight (but not too much). Make sure that the machine cannot slide on the support surface due to the movement of the laser. If necessary fix it with L-shaped plates.
Solution: Once you have solved mechanical problems, if the positioning still remains inaccurate, it means that your engraver is configured to be able to handle very high speeds and accelerations, but in reality it cannot (not with the necessary precision). The inertia of the movement of the laser head causes it to move beyond the commanded movements, accumulating errors and offsets. In this case you have to configure your engraver by lowering the accelerations and / or speeds.
Quick tip: always cleanse your laser lens!
A dirty lens can cause you to lose more than 30% of the laser power. For cleaning you can use a cotton swab dipped in isopropyl alcohol, or specific wipes for optics and photography.
Quick tip: always check your focus!
The key to engraving is all in focus. If the laser is not in focus, it does not burn. Some lasers provide the ability to focus by rotating the lens, other lasers have a fixed focus distance and require you to move closer / further away from the piece to be engraved. Keep in mind that the shape of a laser diode is always a bar, not a dot.
In order to obtain the best focus you should turn on the laser at the lowest possible power, you can use a custom button for this. I suggest you focus on a matte, non-reflective black cardboard to get the best view of the focus point.
Protocol between LaserGRBL and the machine does not foresee that there are multiple systems trying to control the laser. If LaserGRBL is controlling the laser any other display or controller on the machine can only disturb the communication.
Current demand of motors and laser diode can be very high. If the power supply is underrated it is possible that its output voltage drops, causing the control board to reset or hang.
Usually a 12V 2A power supply is at the limit if used with a 20W laser + motors. It is preferable to use a power supply capable of delivering 3-5A of current.
Be aware that electrical noise can often be the cause of false trigger on the limit switches. You can add some filtering capacitor to improve noise rejection. Of course, if your machine does not have physical limit switches you should disable hard limit in grbl configuration.
In reality no segment will really run at the programmed speed as the tracing of a segment is made up of a phase in which the laser head accelerates, a phase in which the speed is linear, a phase in which it decelerates.
Have upgraded to Windows 11 to run my CNC router using grbl Candle software. The machine runs fine on Windows 10. In Windows 11, once the homing process has taken place, all axes lock up. Has any body else had a similar problem? If so, I would be grateful if any suggestions to rectify the problem.
Hello - I had the same issue but may have resolved it through a number of steps on my Win11 laptop. I am not exactly sure which of these worked but not going to change anything now. I had no issue when I was using Win11 during the MK2 build and initial setup but started having problems after tiding up the cables and including the laser. All of the electronics/controllers and power is wall mounted and wanted to keep those components away from the cutting so controller fans stayed clean. Anyway as soon as organized everything I found Win11 stopped working. I had no issues with my other Win10 laptop or Mac laptop.
Let add some more clues.
Dell 1 is an older AMD processor PC. It had a hard drive failure and i put a solid state drive in and loaded windows. It is primarily used for my CNC which is run by an Arduino Uno with a shield to drive the stepper motors. It also has Benbox and T2 laser software from an earlier laser engraver.
Also, it looks like you are using a Ortur Laser Master Pro S2. If so, Ortur has changed the microcontroller that they are using for those models so is not the STM32. For some reason, they do not list the drivers for that laser in the link that Oz has included.
O lm2 pro - windows 11 -GRBL- had com 3 working o messed with the control sliders and then it would let me touch them anymore . I closed out of it and bite I can not connect machine again for some reason
I'm doing a simple 2-axes plotter. I'm using Arduino UNO with the GRBL shield and 2 A4988 drivers. I connected everything and uploaded the grbl software from Github and I can move the two stepper motors from the serial monitor inside the Arduino IDE, as well as, navigating through the grbl setting and controls.
the problem comes when I'm trying to connect my setup to an external software other-than the Arduino IDE!! I keep receiving messages with the meaning that the software can't find the port or can't access it!! I got this problem with grbl controller, universal gcode sender and chillipepper.
But unless you have multiple boards you wont be able to use the IDE at the same time as your GRBL based board anyway except with other boards. However as you say and more so if it is a windows computer you should be able to select any other port from the IDE to disconnect the one you want to free up for GRBL.
If you have a DTI you can easily measure the backlash and IIRC mine is in the region of .001 mm which is probably too fine for laser work but one of my home brew machines also has an interchangeable sled to be able to use a spindle so its one of those things I am not going to touch.
LaserGRBL is perhaps the best Window programming for picture Laser Etching. LaserGRBL can stack any picture, picture, and logo and ship off your laser imprint with a few snaps. Not at all like other GUI, LaserGRBL is explicitly created for use with hobbist laser shaper and etcher and could be a decent free and simple option to picengrave, benbox, T2laser, lightburn for those who don't require all the more than a basic and compelling device.
After installing, you might need to unplug and re-plug your laser to your PC. Finally, check your device manager if the device is present (and note the number of the COM port assigned, you will need that soon):
When the laser is created, the laser should now be selected in the laser window and the interface selected in the USB driver installation section should be selected. If you do not find a suitable interface here, the driver is not installed correctly.
For cutting, it is usually something like 100-600 mm / min and a laser power of 85%. In addition, you typically need several passes, depending on the thickness of the material. For 10 mm wood, this can mean 30 passes and more! The power of the laser should not be permanently above 90%, this will significantly reduce the life of the diode.
It is already stated in the basic documentation, but just as an additional note, here is how you focus the laser. The shield is not fixed in position, but removed at every cleaning cycle. After remounting, it should never touch the workpiece. The air and dirt particles need to escape somewhere. Leave a gap of 3-5 mm to the workpiece.
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