Starlight 4PRO Open Source Project

Open source mini laser engraving machine Starlight 4PRO full set of information.

Starlight 4P, as an upgraded version of Starlight 4, is also a mature solution. There are assembly videos on Douyin and Bilibili. Search for Starlight 4PRO and you can also see more of my fun projects on the video platform.

Portal: My Douyin account: Click to visit the Wandering Star Douyin homepage  My Bilibili account: Click to visit the Wandering Star-dy Bilibili homepage

The complete set of STL model files for Starlight 4PRO has been uploaded to my makerworld account (Author: Wandering Star).

PS: There is no way for artisans to make money. All the information is free and open to the public. I put the model in Maker World to mix some points. If you can help me, please help me. Thank you very much!

Attached link: Click to visit my makerworld homepage , you can find other fun small productions I designed here, makerworld downloads the model for free, but it allows me to get some points, haha, if you don't want to set the printing parameters yourself, I also uploaded the printing configuration, bamboo printers can be directly printed, Starlight 4PRO model link: Click to jump to Starlight 4PRO print model

When printing, the two parts of the card motor threaded rod need to improve the printing quality to ensure accuracy. It is recommended to have a layer height of less than 0.15 and slow down the printing speed. The commonly used materials are petg and pla. I usually use petg to print because of its good toughness. Other parts can be printed according to normal habits (0.2 layer height, 3 layer wall thickness, 15% filling, 3 layer top and bottom). Only the bracket for fixing the laser head needs to be supported, and other printed parts do not need support. Another thing to note is that due to the existence of the Z seam, the holes passing through the optical axis will be bored with a 3.05mm drill bit after I finish printing to ensure accuracy and smoothness. Brothers without a drill bit will need to use the optical axis to poke it several times before assembling it smoothly. If it is not smooth, it will cause movement of the card Stay!

Second, the attachment has uploaded the complete set of accessories for Starlight 4, and the assembly video and tutorial are attached with audio & video links. For more content, please refer to other adjacent videos of the assembly video

Starlight 4PRO assembly video, firmware burning, debugging and software use introduction: Starlight 4PRO assembly video

Starlight 4PRO circuit board assembly video: Starlight 4PRO circuit board assembly video (click to watch)

And a tutorial video of the hand-rubbed version of the mini laser engraving machine: [The work of the wandering stars] The cost is less than 100, and a laser engraving machine is made with an old-fashioned computer optical drive (click to watch)

III. The circuit board can be directly ordered for free PCB proofing at JLC

The main board silk screen marks the component models and specifications corresponding to the positions on the circuit board. The Starlight 4P uses Flexible Printed Circuit as the connecting cable. There are a total of 5 patch components on the board. Brothers who are not proficient in welding, please refer to the welding tutorial first. The tutorial is comprehensive, and you can follow it to operate. Share the firmware source code GRBL V1.1, laser engraving software lasergrbl (this is open source content on GitHub, so it is called sharing), and there is also a preset parameter file attached. Detailed assembly and use are all included in the tutorial

Attachment: GRBL V1.1 firmware, Xloader firmware burning software, laserGRBL laser engraving machine operation software (this file is too large to upload, you can download it by yourself, or download it in the group file of my QQ communication group), development board CH340 driver Statement: These materials are open source content of others, aiming to share and respect originality. The content I open source is the model, scheme and circuit board I designed

Regarding the list of components on the circuit board, because some components are not found in the component library, the BOM table is inaccurate. I provide you with an accurate list of components. You can also explore the principle of the circuit by yourself, which is intuitive and simple. Please send a detailed list to the attachment

1. Proofing PCB, one single FR4 double-layer for each large board and adapter small board, and choose the free option according to your own preference
2. Arduino nano development board × 1, atmega328p chip 9-12 yuan each, free shipping
3. FPC flat soft cable: 1MM spacing -6P, reverse, 20cm long, quantity 1
4. FPC connector: 4p-1mm, bottom flip cover, quantity 2; 6p-1mm, bottom flip cover, quantity 2
5. XH2.54 terminal block: 2P-lying sticker, quantity 1
6. 4010 cooling fan, 12V silent fan is enough, the washer is a printed part, bring this in the model, 2 M3 * 16 large flat head screws, 2 M3 nuts
7. A4988 stepper motor driver × 2, unit price 3-3.5 yuan a, two costs 7 yuan (related electronic components can find a buy, save shipping costs, wholesale components are usually low unit price, not free shipping, the following is not repeated)
8. N-channel switch MOS tube model IRFZ44N × 1, TO220 package, four or five cents each
9. Three-end voltage regulator tube model LM7805 × 1, TO220 package, three cents each, TO220 heat sink × 1, M3 * 4 screwdriver × 1, used in combination with the voltage regulator tube, the total cost is about 1 yuan
10. 1/4W plug-in resistor, one for 47Ω and one for 100K (unit price 0.01 each, but usually sold for 1 yuan for 100)

11.XH2.54 terminal (female socket): 4P straight pin × 2, 2P straight pin × 4, this does not need to be soldered, these pads are kept as spare pads, because I am afraid that some brothers cannot solder the socket of the patch

11. DC female seat 5.5 * 2.1 pure copper × 1 (more than one cent each)
12. Direct electrolytic capacitor: 16V100UF 5 * 7 specifications × 2 (a few cents each)
13. Specification 2.54MM straight female 1 * 8P × 4, specification 2.54MM straight female 1 * 15P × 2 (about one cent each)

The above are all the components required for the main board, all of which are plug-ins, convenient for beginners to solder, and the cost is about 23 yuan

The following are other parts required to assemble the mini laser engraving machine

14. Laser head 5V 250mW, diameter 12mm (plus shipping fee of about 26 yuan each, TB, Sanwu Electronics has a 5V head, no cooperation relationship, just convenient for everyone to find)
15. Laser goggles (buy one separately for about 3 yuan, buy one more for about 1 yuan, search for dark green welding glasses, it is recommended to choose dark colors, good protection effect, PDD 2-3 yuan can buy free shipping, do not buy with laser head, their glasses are not good)
16. Data cable (can be matched with the data interface of the development board. The cost of the development board is calculated on the main board. Actually, you can buy it together with the development board. It costs about 50 cents per piece. There are also development boards with C port, just like mobile data cables).
17. A set of framework (the model STL file has been uploaded, and those who have a printer can print it by themselves. The material cost is a few yuan. If you don't have a printer, you can refer to my hand-made version tutorial, or contact me to obtain the framework and a complete set of parts and finished products. PS: The profit path of manual labor is meager)

5. Matching screws - Starlight 4PO Matching screws: M3 * 6 three, M2.5 * 10 four, M2.5 * 8 ten, M2 * 4 six, no need for nuts (worth a few cents); the screws used on the main board are cost-effective on the main board, (2 M3 * 16, 2 M3 nuts, 1 M3 * 4 bolt, or M3 * 6, the same as the screws at the beginning)

18. 2 miniature stepper motors, 58mm long threaded rod, 3.75mm pitch, 1.2 yuan each. This motor is from Shenzhen Jiesheng Electric (selling inventory, I don't know, no cooperation relationship). He sells a Japanese electric original 15MM two-phase four-wire miniature stepper motor-C model motor, which is said to have 4-5 thousand in stock. The only drawback is that he does not include shipping, and the shipping fee is 6 yuan. If you are clumsy, you can buy more at a lower cost
19. Motor wire: This uses FPC flexible cable, which is integrated into the main board
20. Stainless steel optical axis with a diameter of 3MM and a length of 10cm. You can buy 50 for 7 yuan, but you only need to use 4 to assemble one. I have been preparing kits for a long time, so I buy more. You can also look for retail options
21. Grease (butter is also fine, but I use grease from 3D printers. Maybe it's okay to apply some lubricating oil, but it won't run smoothly without lubrication).
22. Power supply 12V2A power supply (about 5 yuan each), the power supply port should be 5.5 * 2.1 or 2.5, in order to match the DC female port of the main board. Using 2A is to consider the power supply being falsely labeled. If not falsely labeled, 0.5A is enough

After all the materials are completed, the cost of the entire set of replicated materials is about 75 yuan. Note that this is the cost of the materials you replicated yourself! The tutorial is recorded for free, the software is also open source, and the materials are shared for free without any other charges. It is recommended that everyone make it themselves, which is more cost-effective and interesting

My Xiaohuangyu username is Wandering Star, and my profile picture is

Douyin/ Bilibili also has the same profile picture. In order to prevent counterfeiting, please pay attention to the fact that I have more fans. There are some kits of things I designed inside (such as Polaris Mini 2, Starlight series, etc.). Considering that many parts are relatively scattered, we can also provide some parts packages if needed in the future. No need to explain, it's the humble way of survival for craftsmen...

Open source content, if there are any omissions, please contact me for correction, thank you!