LaserGRBL is one of the best Windows GCode streamer for DIY Laser Engraver. LaserGRBL is able to load and stream GCode path to arduino, as well engrave images, pictures and logo with internal conversion tool.
Unlike other GUI, LaserGRBL it is specifically developed for use with hobbist laser cutter and engraver. In order to use all the features your engraver must supports power modulation through S command.
With image engraving (raster to gcode convertion) LaserGRBL could be a good free and easy alternative to picengrave, benbox, T2laser for who don’t need more then a simple and effective tool.
LaserGRBL is a free open-source software not related with any brand. This site does not sell Laser engraver, but we can suggest some solutions for all budgets.
LASER DIODE ENGRAVING
What laser engraver I should buy? Can you reccomand one?
For those who want to start in the world of laser engraving I recommend a laser diode engraver. They are generally easier to use, do not require special calibrations, can be easily assembled in a few minutes and, most importantly, can be purchased with a very limited budget (150€ – 250€).
With a 20W (5.5 optical power) laser diode you will have the possibility to easily engrave on plastic, wood, leather, cardboard and to cut paper, cardboard, leather.
It is also possible to cut plywood up to 4/5mm thick, but if cutting is your main job better orient yourself on more powerful CO2 machines (read more).
The laser modules generally supplied with laser engraver are heavily pumped to obtain the highest powers, for this reason I strongly advise against letting them work for long periods at maximum power, otherwise they burn quickly. This recommendation applies more or less to all manufacturers. (read more)
Buying from China is now almost an obligatory choice but unfortunately many Chinese products do not guarantee the right quality and reliability over time. ORTURbrand and are certainly an exception. I had the opportunity to personally test their products and I was impressed with the quality and the fact that the company is in a continuous research and development process to give the best quality-price ratio.
Their engraver differ from any other products you can find on the market for at least 3 characteristics:
they use a 32bit control board (instead of classic 8bit ATmega328) with an improved version of Grbl. This means no more communication error, hang etc.
they take safety very seriously with lot of safety feature: active position protection via G-shock sensor, active connection control (stop engraving if PC is disconnected or crash) , exposure limitation that turn off laser if there is no movement for a long time (prevent burning holes in your table or start a “garage fire”)
they have limit switch sensors to allow repeatable positioning through the Homing procedure
In addition their products comes full of accessories, with good documentation, assembly and use guide, answers to the most frequently asked questions also with a series of video tutorials.
All this documentation can be downloaded thanks to a link that you can find in the box with the engraver, which is complete with all accessories for use and assembly carefully packed in an anti-shock package suitable for transport .
The after-sales assistance is also of good quality, both through email and via their facebook page
If you want to update your laser engraver with a more powerful unit they also sell spare laser module with different power options: 7W/15W/20W (electrical power).
focus it product on solidity and safety. In fact, their engraver is made entirely of metal, this gives it strength and reliability.
The fact that it is made entirely of metal makes it more stable, this means that the machine will stand still on the table without having to screw it solidly to it (as with other machines that move when the laser shakes). Furthermore, the control board is also shielded in a metal container.
The laser is fixed focus, but the machine features an intelligent slide system to quickly adjust the focus by moving the distance between the laser module and the work piece.
The protective glass mounted in front of the laser makes it safe to use even without wearing safety glasses. This make the engraver more convenient to use in environments where several people work (always paying attention since it is a laser!).
Something could be improved in the laser equipment (only 20W option) but the company is currently working on a new model (A5 pro) which should have a more powerful laser.
OTHER SUPPORTED BRAND
LaserGRBL support a wide range of laser engraver based on the open “GRBL” firmware. This list include some brand that is compatible with LaserGRBL (by user feedback).
EleksMaker is a brand made by makers for makers. They have a very nice and particular design and in addition to laser engraver they produce a lot of tools and accessories for DIY. They have a very informative site and quality after-sales support service.
Their laser diodes are sold claiming TRUE optical power, so 3.5W laser equals about 10-15W of competitors modules.
Eleksmaker support was not tested by me, but it was reported to be compatible by the LaserGRBL user community.
BETTER QUALITY MODULES
If you need laser modules for continuous use, I do not recommend using modules that come with your markers, either those that are cheap on ebay, amazon, aliexpress, bangood, gearbest … All these modules are designed for occasional use and deteriorate quickly if used at maximum power for a long time.
There are a couple of very good sellers who do small productions but of the highest quality. They are all modules made by hand according to the best standards, all tested one by one and that can also provide personalized answers for any needs.
OptLasers is what I call “the Ferrari of lasers”. They offer a wide range of products that fits the needs of any professional who wants a high quality laser system on their CNC.
Laser modules are available ranging from optical power from 2W up to 15W (equivalent to about 85W of electrical power). These are products made from solid aluminum blocks, individually CNC machined, universal mounting systems are available for easy connection to existing machines.
Their production includes air-cooled and water-cooled laser modules, magnetic quick attach and release systems, and many more!
Laser diode engraver is suitable for small workloads. If you need fast engraving, cutting thick materials, or metal engraving, you should consider purchasing a 40W or higher power engraver.
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.
Prices can vary between 400€ to 4000€ based on laser power and size of the worktop.
In this case I advise you to choose the most suitable product for you by evaluating shipping costs and product feedback.
HOW DOES IT WORK
Basically there are 4 elements talking between them
Elettronics (power supply, laser diode, stepper motor & motor driver)
Hardware (rails, linear bearing)
Personal computer talk to Arduino board via USB in a language called G-Code
G0 X10 Y10 (Fast move to position X10, Y10)
M3 (Turn on Laser)
G1 X20 Y10 (Linear move to X20, Y10)
G-Code is the common name for the most widely used numerical control (NC) programming language. Basic command set include G0 (rapid positioning) G1 (linear movement) G2 and G3 (clockwise and counter-clockwise arcs).
Arduino UNO board with Grbl firmware translate this commands to stepper motor pulses, direction control, laser power modulation.
Motor driver transform low level TTL signal from Arduino, to high-power signals for stepper motor.