Neje Dk-8-kz Software Download
The NEJE DK-8-KZ Laser Engraver has me (and the commentators) were pleasantly surprised and since I needed a break from my 3D printers, it was time for a new Laser engraving machine. I’ve got me this time, for the NEJE DK-BL1500 Laser Engraver chosen, since it is, in my opinion, three (more or less) sensible improvements are: There’s an App for Printing (“well”), a built-in battery (cool) and the Laser has a power of 1.5 W instead of 1W (we will see).
- NEJE DK-BL1500 Laser Engraver (App, battery & 1.5 W!) for 70,56€ at gear best for 72,05€
- Pressure surface: 42 x 42 x 78mm (550 x 550 pixels)
- Built-in rechargeable battery: 6000mAh (enough for ~3 hours)
- App (via Bluetooth 4.0)
- Laser: 1.5 W (wavelength 405nm)
I got a small 300mw hobby laser off Amazon from NEJE. The LiteFire software is simple, but easy to use. Results are fine. Documentation is sparse. Unfortunately, the litefire software contains malware at least the copy they gave me did. NEJE DK-8-KZ, DK-8 PRO-5, DK-6 PRO-5, JZ-5, JZ-5-T, DK-5 Pro-5 engraver comes with a 1GB micro SD card, the files on the SD card are including the USB-Serial driver, engraver software and few JPG photos as shown in the figure below. The software is compatible with Win XP, Win 7, Win 8, Win 10, system. So I downloaded the Software for Windows 8 and 10 (probably also for Windows XP and Windows 7): NEJE Laser Engraver Software for Windows As the NEJE DK-8-KZ, the Software is “OK”. Not a masterpiece, but in the end the Workflow looks eh as follows: Image editing software of choice to start; Wish, reduce to two colors. Jual NEJE DK-8-KZ 1500mW 405nm High Speed Mini USB Laser Engraver Carver dengan harga Rp2.533.200 dari toko online Anjani Store9, Kab. Cari produk Produk Lainnya lainnya di Tokopedia. Jual beli online aman dan nyaman hanya di Tokopedia.
Before it goes on follows a fat, fat warning: This and other laser engraving machines are not a toy! 1500mW damage the retina irreversibly in milliseconds! Remember that laser beams can be refracted or reflected. Even if you have protected your eyes: at Any time, may, without prior security measures, any other Person to be taken. This device has nothing to look for in children’s hands. As is the case with some other China-Gadgets a healthy human sense and a sensible training expected!
Packaging & Shipping
Have ordered this times at LightintheBox and the package was there for 12 days. The packaging is good – Inside, the laser engraving is protected machine from “plastic foam”.
Thus, the moving parts flying around, these were additionally fixed with tape.
Thus, we were able to devote ourselves directly to the first Start.
Apps for the NEJE DK-BL1500 Laser Engraver
Because of the NEJE DK-BL1500 Laser-Engraver, in contrast to the NEJE DK-8-KZ, is by App to use, we have concerned us for iOS (iPhone 7) and Android (Xiaomi Mi-6) directly, the Apps.
- NEJE Printer iTunes for iOS >>
- NEJE_Bluetooth_Lasercarver.apk for Android >>
Unfortunately, it is not collected, how it is used as a “European customer”, really trust. The iOS App has not a single review (at least Version 1.3, which suggests a bit of care) and the Download page for the Android App looks like a semi-legal Stream page.
The virus scans show nothing suspicious, so I have the Apps quickly, without problems, installed and it show serious (*bada bum tsss*) differences between the Android and iOS App. The iOS App is very Spartan.
With the Android-App you can change, e.g., line widths, texts/Emojis to add or by a library of beige motifs were browsing.
Summary: the Android App can do much more, but is in the operation (and appearance) is still creepy. The editing of self-made images is jerky, the templates don’t want to print anyway, the Combine is exhausting.
So I downloaded the Software for Windows 8 and 10 (probably also for Windows XP and Windows 7):
- NEJE Laser Engraver Software for Windows >>
As the NEJE DK-8-KZ, the Software is “OK”. Not a masterpiece, but in the end the Workflow looks eh as follows:
- Image editing software of choice to start
- Wish, reduce to two colors
- Bit not readjustment (what the Apps can properly)
- In a JPG or PNG, convert to (BMP, TIFF & PCX should probably work)
- NEJE Software, image import, and subject to transfer
This Workflow worked for about 10 prints every time. The advantage compared to other Laser-engraving machines – the App fizzles, however thus (for me). What is, however, a plus point, is actually the built-in Li-Ion battery with 6000mAh. You had to stop the DK-8-KZ is always in electrical sockets-close, so I was able to take the DK-BL1500 for the testing time. Whether this remains, however, a plus point, or the Laser remains the Engraver always at a point in the hobby room … we’ll see.
The quality of the engravings
As with the DK-8-KZ, the results are (surprisingly good). Is the Laser on a white sheet, depending on the height of the object, to focus on reasonable and, if necessary, to a company once before a test run with the proper “burn time per Pixel”.
Experience has shown that the 550 x 550 pixels (approximately 42 x 42 mm) for engraving his objects of Desire. The surface should be smooth and not too large. Finally, the carriage must be able to move the to serious objects in the engraving machine. We were able to engrave paper, wood, plastic, and rubber. For metals, 1.5 W are just too “little”.
If you just the engraving, but even after repeated “Nachlasern” and the maximum engraving time, the engraving is not recognize properly. By the way: I’m about to put in print is always a carton on the engraver. Not (only) because I don’t trust the glasses, but also to protect surprising visitors.
Conclusion
We say it this way: if you don’t need the Apps and the mobility, is the NEJE DK-8-KZ Laser Engraver better. The difference between 1W and 1.5 W of power in the material-no difference. Who quickly Text on the go from an App to a device (office-inventory?) engrave to can to the NEJE DK-BL1500 attack. Both China Gadgets make it fun – you need to wait just a bit for Engraving ;-).
How-to’s and resources for upgrading the NEJE (also sold under the HICTOP brand, and others) desktop USB laser engraver to full GRBL compatibility by replacingthe electronics.
Last updated January, 2018.
Full grbl upgrade with Arduino CNC Shield
Videos
I have uploaded a video of the whole upgrade process at youtu.be/2rbzI-d-bOA.
A second video with specific focus on the wiring, and that covers use of aMOSFET to switch the laser, is also available at https://youtu.be/MuKYvifYnYs.
Links to resources
Software-only upgrade
If you are lucky enough to have a machine that can be upgraded without replacingthe board, you can follow these instructionsto flash a new version of grbl to it.
Hardware
The engraver pictured above and in the video: KKmoon NEJE DK-8-KZ 1000mW
The Arduino shield used to control the steppers: Arduino CNC Shield.I think I mistakenly referred to this as “grblshield” in the video.
Arduino Uno, the board that connects to the shield above.
Laser focus adjustment ring.
IRF520 module, the board thatcontrols power to the 5V laser.
Software
Universal Gcode Sender -Used to send commands to the laser.
J Tech Photonics Laser Tool -Used to convert images to laser commands. Adobe imageready 7.0 free download.
Wiring diagrams and schematics
Neje Club Dkz Htm Download
Connecting PC power supply to Arduino and Shield
The CNC shield can accept any DC voltage from 12V to 36V. Because the steppermotors used here are very small, the 12V does not need to be high amperage;500ma or larger will probably be sufficient.
To power the upgrade, I used a power supply designed to run an internal PChard drive, although a full-size PC power supply would work.
The most important part of the power supply is that is can give 5V at severalamps to power the laser.
The CNC shield electronics can then be powered from 5V as well, but I choseto power them from the 12V rail of the power supply. If you choose to do that,you will want to adjust the current-limit on the drivers to avoid damaging thestepper motors. Details of how to do this are in the video.
Connecting stepper motors to the shield
The connector for the stepper motors are between the “drivers” (the red square circuit boards in this image.
With the white wire facing up, match the 4-pin connector on the cable to the4-pin connector on the board for both the X- and Y-axis.
Connecting laser to power supply and CNC shield
The SPNEN (SPiNdle ENable) pin on the shield cannot power the laser itself, soI use a circuit with a transistor to power the laser from the power supply, butstill allow it to be turned on and off by the CNC shield.
First, you will connect the positive wire of the laser (coloured red on mine) tothe 5V power line from your power supply. It MUST be 5V, any more will damagethe laser!
We will switch the laser on and off by connecting or disconnecting thenegative/ground wire. This technique is known as “low-side switching”.
Here are two ways to do it, though there are probably other ways too. Irecommend using a MOSFET over a TIP120. But if you only have a TIP120 it willstill work though your laser power may suffer.
MOSFET circuit
An efficient way to switch the laser on and off is to use an N-Channel PowerMOSFET. Currently I am using an IRF520 module like this one, but this is not designed for logic-level switching so if you have the option I wouldrecommend using a logic-level MOSFET instead.
But, regardless of the voltage, if you want to solder one yourself then thecircuit will look something like this:
This will switch the laser on and off with a minimum of voltage loss.
Nejelaser Kz Software
If you use the same IRF520 module that I did, here is how the wires areconnected:
TIP120 circuit
Before using the MOSFET, I was using a TIP120 Darlington transistor. This worksbut it is a poor choice because the voltage drop on a TIP120 can be as much as2V in some cases. If we were switching 48V then that wouldn’t be a problem butfor a 5V laser, losing even 1V is going to severely impact laser power.
Here is the TIP120 switching circuit I used before:
The transistor I used is a TIP120 “Darlington” transistor. It is a very common“power transistor” that you can find at any electronics shop (Radio Shack,Fry’s, etc) and everywhere online. You can use any similar NPN-type powertransistor (such as the TIP31, etc) as long as it can handle the current. Astandard 2N3904 transistor can’t handle it, and while a 2N2222 may be able tohandle it for lower-powered lasers, I would still recommend using a TIP-series transistor because they are still very inexpensive.
Note: I should really upgrade the above circuit to use a MOSFET insteadof a power transistor. It shouldn’t be that hard adapt it usingthe example from this page. It may alsolet us use PWM to control the intensity of the laser.
Orientation
Neje Dk-8-kz Software Download
The origin (X/Y at 0) coordinates should be at the lower-left of the of thestage. “Lower” here means nearest to front. Make sure moving each axisnegatively will move toward that point, and moving each axis positively willmove away from that point.
configuring grbl to work in positive space
For J Tech Photonics Laser Tool (in Inkscape), make sure to set the machinecoordinates system to operate in positive space. You will do that byuncommenting the following line in config.h before you upload the grblcode to the Arduino:
grbl 1.1 settings for Arduino CNC Shield upgrade
Reset default work area
Neje Kz 1000 Software
You will probably need to reset the default “work area”. Do that with thesetwo commands: