First lets test the laser to make sure the issue isn't with the module itself. Connect the laser to the power supply and leave the PWM cable floating. If the laser still operates at full power try connecting the PWM cable of the laser to GND this should set the duty cycle to 0%, which should turn the laser off.

Also I forgot to ask did you adjust the laser power using the S-MAX setting? (you can see at 9:48)

No, even when i connect the pwm pin to the ground, the laser is turned ON with full power. Update- last night i was successful in carrying out the motion system of the device. Turns out my stepper driver current limit was the problem.

@@pointBreak64 So does the laser work properly now, or is it still stuck at full power?

@@bitofelectronics its stuck at full power plus, after 5-6 seconds, it starts turning on and off on its own🥹🥹🤔🫣🫣💁

Hello, the pulley im using is a GT2 type with a 6mm belt width and a 5mm bore for the shaft.

Thanks ❤

Yes sir you are right, but sometimes I over etch it and the whole pad becomes as thin as a human hair 😅

Hello, you can export just the drill files and board edge files as single PNG image from your CAD software. Then, upload that file to LaserGRBL as shown in the video, Once you've aligned the board edge using the outline function in LaserGRBL you can precisely pinpoint the holes.

At 7:05 you can see that the 6th trace in the top-left corner is the thinnest, measuring 0.3 mm. It’s set to 0.3 mm in the software, but in reality, it’s even thinner due to the laser’s dot size (mentioned at 0:55). If you buy a good laser with a small dot size, you can engrave traces pretty close to 0.3 mm. However etching will also be a challenge, so keep this in mind :)

Hi, a 2.5W laser should be fine for this purpose if it doesnt engrave all the way through in the first pass it should be able to do so in a second pass. I recommend not going below 2W for this kind of work. However the manufacturer of the laser is also important as some sellers (especially from China 🙃) may list inaccurate power ratings for their lasers.

@@bitofelectronics Thank you for the response. Much appreciated.

Hello, i am using an LM8UU bearing, its length is 24 mm, and its width is 15 mm :)

It's super simple For the motor facing left and the one facing right, you just need to mirror the wire connections of one motor. Solder the wires together, and you can plug them into the same stepper driver. As long as both motors are connected properly they will run in sync 🙂

Thanks ☺

about 240x240 mm

Around 130$

It’s probably hard to tell them apart if they’re unlabeled. I did some research, and gpt suggests that "if you can test for noise with an oscilloscope, metal film ones will have less noise than carbon. Resistance stability under heat can also be a giveaway, with metal film and metal oxide being more stable than carbon" But I don’t think this is a good method.

Hocam eğer lazer tek geçişte boyayı kazısın istiyorsanız en az 4watt alın derim.

Yes, you can use it to make SMD PCBs, but you will need a higher quality laser. Don't expect it to engrave very small footprints, like those of the STM32F103CBT6

@@bitofelectronics I really appreciate your response, I m getting started with PCB milling and could I use 3018 CNC for it ? any advice?

​ @GameAndJokes You are welcome ☺,i don't have any experience with PCB milling, but I know the 3018 CNC. It's great for beginners, and you can create some simple circuits with it. I believe it uses a 775 motor as the spindle, which you could consider upgrading in the future. I've heard it has low-quality ball bearings and vibrates a little while engraving.

It’s awesome to see you succeed, Congrats bro 😄

One of my friends bought a brand-new Arduino, and later we discovered it had a bad solder joint on one of the pins of the ATmega chip. Maybe your problem is related to something like that.

@@bitofelectronics does it means that i should change my arduino board with a good quality? But i checked my board, it seems really fine

@@ritiksadh1999 If you think the problem might be with the Arduino, changing it to another board could solve it. You could also try this: disconnect the GRBL shield, connect the Arduino to the computer, and then start the engraving to see if the error still occurs.

@@bitofelectronics @bitofelectronics i tried your way, there was no error and was working fine. Also i just removed all the connections of motors & laser, but didn't removed grbl shield and steppers drivers, this was also working fine without any errors. Then i checked my other components, was no sign of any damage neither with the frame structure nor with motors & laser. I searched whole internet got some solution of grounding it bcoz movement of belts creates static electricity making my machine stop. But this above solution also didnt worked with my engraver 🙁. Also tried contacting and troubleshooting with software customer support but still couldn't find the exact issue

@@bitofelectronics i tried your way, there was no error and was working fine. Also i just removed all the connections of motors & laser, but didn't removed grbl shield and steppers drivers, this was also working fine without any errors. Then i checked my other components, was no sign of any damage neither with the frame structure nor with motors & laser. I searched whole internet got some solution of grounding it bcoz movement of belts creates static electricity making my machine stop. But this above solution also didnt worked with my engraver 🙁. Also tried contacting and troubleshooting with software customer support but still couldn't find the exact issue

thank you very much 😊

Hello,I just used the configurations I showed at 9:29, and don't forget to set the speed as I showed at 9:49. Also, remember that the speeds are in mm/min, not mm/s

Hi, the laser has a 20-watt input power and a 4-watt optical output power.

Are you sure you've adjusted your stepper driver microstepping to 1/16?

@@bitofelectronics how to do that please advice? Also my motors run roughly in slow speeds which make machine machine to shiver and reduces the print quality

​@@ritiksadh1999 At 8:35 you can see that underneath the stepper driver there are three black jumpers connected.

@@bitofelectronics when i inserted all the jumper caps underneath the drivers, after that my motors doesn't even move please suggest

​@@ritiksadh1999 can you check the current limit on stepper drivers like the one in this video: kzbin.info/www/bejne/eIeQoKiunb-Uo6s

Thank you so much for your kind words! I'm glad the videos are helpful☺

Hello,you only need to flash the GRBL firmware (9:06) and configure the settings (9:24), then click "Write" .You don't need to use the Arduino IDE or anything like that. :)

Is it the axis with 2 motors that's lagging, or the other one with just 1 motor?

@@bitofelectronics thankyou for your reply 😊, but my issue resolved after replacing with a new step driver. i have one question. As we do our engraving or cutting projects via connecting a pc to engraver with usb, but sometimes there are some designs like images which take a long time like 2-4 hrs to engrave in good quality. is there any way to use my engraver offline by sending direct g-code to engraver via SD card / PENDRIVE so that my computer would not be running idle for straight hours? if there is an upgrade with this Arduino CNC to add a display controller and a micro SD / PENDRIVE module to achieve above task please tell, it will be thankful a lot for your help! 😊

@@ritiksadh1999 You're welcome☺, I don’t have any idea how to use it with a screen, though :(

Hello, you can try LightBurn it's a paid software, but it comes with a free trial and is more advanced than LaserGRBL. There are also options like T2Laser and Benbox, but I haven't used those. My experience is mostly with LaserGRBL 🙂

It doesn't have a homing function due to the lack of endstop switches but you can manually move to a desired position and then click the home button to set that position as the home.

@@bitofelectronics so you say i can add some endstop switch?

@@rakhaevandy Yes, if you want, you can add endstop switches, but using it without them is perfectly okay too :)

I believe you're referring to the lofi type background music. I really appreciate the feedback and will definitely take it into consideration for future videos ☺

Resistors don't have polarity so you can connect them either way 🙂

@@witnessnz Thanks ❤️

Thanks :D

Thank you very much 😊

Yeah it will work, but paint is more durable to heat. So when I'm engraving a small point the surrounding paint won't be affected by the heat as much as the paper tape would be.

Hello, I bought my laser from here (the black one) : tr.aliexpress.com/item/3256802965524796.html?spm=a2g0o.order_list.order_list_main.5.18753d12r5OXyC&gatewayAdapt=4itemAdapt You can use more powerful lasers, but a 20-watt laser with a 4-watt optical output power is more than enough for engraving paint. :) For more powerful laser modules, upgrading the power supply will be sufficient. You don't need to change anything else. However, the holes on the part that carries the laser are specifically made for the laser in the link. Since it's made out of plastic, drilling it to fit another laser will be easy, or you can edit the files I shared according to your laser.

​​​@@bitofelectronics thankyou for your heartwarming reply ☺️ Can you please also tell me what kind of material, infill quality & nozzle type is enough to make the parts from 3d printer you used in this to hold the machine & parts and do not bend or break? This will help me a lot. Actually my purpose is for engraving as well as for cutting thick acrylic or wood from 3mm to 10mm so which laser power should i use? Or this 4watt optical power is enough to cut and pass through the object, can it engrave on a metal piece also ? Please also guide me, will it effect my arduino and other electric components if i use high power laser module ? I want to make my machine durable and long lasting, i made it earlier on my own then my custom made cnc shield pcb board blew after some time of use, is arduino durable & used cnc shield has enough strength to handle the load? Also should i use genuine arduino from italy version or the clone is okay to go ?

Well, I printed my parts with a 0.6 mm nozzle, 0.3 mm layer height, and 50% infill and they’re still standing to this day. 10 mm wood or 10 mm acrylic is very thick for this 4-watt optical output laser, and I don't think it can engrave metal pieces. For tasks like these, you’d need a much more powerful laser, like a CO2 laser.Maybe you should get something more professional and powerfull like these The laser power input is directly connected to the PSU, and the only part of the laser that connects to the Arduino is the PWM signal carrier cable. That cable carries very little current, so using a high-power laser won’t affect your Arduino or GRBL shield. Using a clone Arduino is fine there’s no significant difference from the original. Maybe you should get something more professional and powerful like these if you're planning to earn money from it: kzbin.info/www/bejne/rZmcdGl8ebKWmNU www.alibaba.com/product-detail/4060-9060-1080-1310-RuiDa-80W_1600467717932.html?spm=a2700.7724857.0.0.22d51a0dpq9Aqm

Thanks :)

You are welcome :)

Hi thanks for your kind offer. You can contact me at [email protected]

Thanks for sharing your experiences, happy making :)

Around 120 - 130$

It the smallest bro

You can't make more small

Well, everything comes with a price, this is the smallest I can design 😄

Well, I'm not building a printer right now, but maybe in the future 😄