Open Source Starlight 4S Project

Open source mini laser engraving machine Starlight 4S full set of information Douyin nickname: Wandering Star Station B: Wandering Star-dy

Before the open source Starlight 2, Starlight 4, Starlight 4P was used by too many people for personal gain, and some people took away the matching model motor, resulting in many brothers who want to reproduce can not reproduce, so the version design of a new model motor was updated, in order to maintain the beauty and convenience of assembly, a new model and matching circuit board were designed, so that more people can reproduce the mini laser engraving machine, experience the fun of DIY, and it is still a low-cost solution

Assembling videos are available on Douyin and Station B, related searches: Starlight 4S, you can also see more of my interesting projects on the video platform

1. Starlight 4S full set of stl model files have been uploaded to my makerworld account (Author: 流浪的星星)

ps: There is no way to monetize the handicraft, the information is all free and public, I put the model in the makerworld in order to mix points, everyone can help me a little help, I am grateful!

Attached portal: Click to visit my makerworld homepage, you can find other fun little productions I designed here, makerworld download model is not charged, but it can allow me to collect points, haha, if you don't want to set your own printing parameters, I also uploaded the printing configuration, bamboo printers can be played directly, Starlight 4S model portal: Click to jump to Starlight 4S print model.

When printing, the two parts of the card motor screw need to improve the printing quality to ensure accuracy, it is recommended to lower the layer height below 0.15, slow down the printing speed, the material commonly used PETG, PLA can be, I usually use PETG to print, because the toughness is good, other parts can be printed according to the usual habits (0.2 layers high, 3 layers of wall thickness, 15% filling, 3 layers of top and bottom), only the bracket that fixes the laser head needs to add support, and other prints do not need to be supported; Another point to pay attention to is that due to the existence of the Z seam, the hole of the optical axis, I will use a 3.1mm drill bit to boring after printing to ensure the accuracy and finish, and the brother who does not have a drill bit needs to use the optical shaft to poke it several times at that time, and then assemble it after smoothing, if it is not smooth, it will lead to moving stuck!

2. The attachment has uploaded a full set of accessories for Starlight 4S, and the assembly video and tutorial are linked to the Douyin video, and for more content, please refer to other videos adjacent to the assembly video

Starlight 4S Assembly Video: (To be updated)

Tutorial video of the hand-rubbed version of the mini laser engraving machine: [The work of the wandering star] costs less than 100, and you can make a self-made laser engraving machine with an old-fashioned computer optical drive (click to watch).

3. The circuit board can be directly sampled in JLC for free PCB

Motherboard silk screen marks the model specifications of the components at the corresponding position on the circuit board,Starlight 4S uses a flexible circuit board as a connecting line,There are a total of 5 SMD components on the board,Brothers who are not skilled in soldering, please see the welding tutorial first,The tutorial is very comprehensive,Just follow the operation,Share the firmware source code GRBL V1.1、Laser engraving software lasergrbl (this is GitHub open source content,So it's called sharing),In addition, there is a preset parameter file attached to the attachment,Detailed assembly and use are available in the tutorial.

Attachments: GRBL V1.1 firmware, Xloader firmware burning software, laserGRBL laser engraving machine operation software, development board CH340 driver Statement: These materials are the content of other people's open source, aimed at sharing, respecting the original, my open source content 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, so the BOM list is inaccurate, I provide you with an accurate list of components, and you can also explore the principle of the circuit by yourself, intuitive and simple, and the detailed list is sent to the attachment

1. Proofing PCB, one large board

2. Proofing PCB, transfer a single FR4 double-layer to a small board, and look at the other items that do not charge for them, and pass a two-piece file that is put together, which can be rolled together, but see whether the rules of the follow-up circuit board factory allow it, and see if you understand your ability.

3. FPC flat flexible cable: 1MM pitch-6P, reverse, 15cm long, quantity 1

4. FPC connector: 4p-1mm, under the clamshell, quantity 1; 4p-1mm, upper drawer, quantity 1; 6P-1mm, under the flap, the quantity is 2

5. XH2.54 terminal block: 2P-SMD horizontal sticker, quantity 1, 2P plug-in-bent pin, quantity 1

6 SPECIFICATIONS: 2.54MM INLINE FEMALE 1*8P×4, SPECIFICATION: 2.54MM INLINE FEMALE 1*15P×2 (ABOUT 1 DIME)

7. Plug-in electrolytic capacitors: 16V100UF 5*7 specification ×2 (pennies one), 16V 470UF 8*12 specification×1

8. DC female 5.5*2.1 pure copper ×1 (one more than one dime)

9. 1/4W plug-in resistor, 47Ω one, 100K two, (unit price 0.01 one, but usually 1 yuan 100 so sold)

10. N-channel switch MOS tube model IRFZ44N×1, TO220 package, four or five cents

11. Three-terminal regulator tube model L7805×1, TO263 package, one cent

12. 4010 cooling fan, 12V silent fan is sufficient, 2 M3*14 screws, 2 M3 nuts

13. Arduino nano development board ×1, atmega328p chip 9-12 yuan each

14. A4988 stepper motor driver × 2, the unit price is 3-3.5 yuan a, the cost of two is 7 yuan, you can buy one more spare, individual drives can not be used (related electronic components can be found to buy, save freight, wholesale components are usually low unit price, no free shipping, will not be repeated below)

15. Data cable, about 0.5 yuan a piece, some of the development version is sold together with the data cable, decide for yourself

The above are all the components required for the motherboard, and the cost is about 23 yuan

The following are the other parts you need to assemble a mini laser engraving machine

1. The laser head is 5V250 milliwatts, with a diameter of 12 mm (plus a freight of about 26 yuan, tb, Sanwu Electronics has a 5V head, there is no cooperative relationship, just convenient for everyone to find)

2. Laser goggles (buy one separately for almost 3 yuan, buy one more for almost 1 piece, search dark green welding glasses, it is recommended to have dark color, good protective effect, PDD2-3 yuan can buy free shipping, don't buy it with the laser head, they can't wear glasses)

3. Data cable (you can match the data interface of the development board, the cost of the development board is calculated to the motherboard, in fact, you can buy it with the development board, almost 5 cents, and there is also a development board with C port, which is the same as the mobile phone data cable)

4. A set of frames (the model STL file has been uploaded, you can print it yourself if you have a printer, the cost of materials is a few dollars, if you don't have a printer, you can refer to my hand-rubbing tutorial, or find me to get the frame and a full set of parts and finished products, ps: manual people's thin profit path)

5. Supporting screws - Starlight 4PO matching screws: M3 * 6 two, M2.5 * 10 four, M2.5 * 8 ten, M2 * 4 six, M2 * 8 two, no nut (worth a few cents), (in addition to the screws used to fix the fan, mentioned in the above calculation of the motherboard, M3 * 14 screws 2, M3 nuts two)

6. There are 2 micro stepper motors× 58mm long screw, pitch 3mm, there are many dismantling factories selling on Xianyu, about 2 yuan a, but they are not free shipping, it is dismantled from the Samsung computer optical drive, and you can find a lot of "Starlight 4S supporting motor" directly (no cooperative relationship!) At present, there are 12 yuan to sell 3 packages of freight, and the details are communicated by themselves

7. Motor cable: This uses FPC flexible cable, which is closed into the motherboard

8. THE STAINLESS STEEL OPTICAL SHAFT IS 3MM IN DIAMETER, 10CM LONG, 50 CAN BE BOUGHT FOR 7 YUAN, BUT ONLY 4 PIECES ARE NEEDED TO ASSEMBLE A SET, I HAVE BEEN PREPARING KITS FOR A LONG TIME, SO I BUY MORE, YOU CAN ALSO FIND OUT IF THERE IS RETAIL

9. Grease (butter is fine, but I use the grease of the 3D printer, maybe you can apply some other lubricating oil, no lubrication is not smooth)

10. Power supply 12V2A power supply (about 5 yuan a), the power supply port should be 5.5*2.1 or 2.5, in order to match with the DC female port of the motherboard, use 2A is to consider the false standard of the power supply, and 0.5A is enough if it is not false

After all the materials, the cost of the whole set of materials for the reproduction is about 80 yuan, note that this is the cost of the materials for your own reproduction! The tutorial is recorded for free, the software is also open source, the information is shared free of charge, and there is no other paid content, it is recommended that everyone do it themselves, which is more cost-effective and more interesting

Open source content, if there is any omission, please contact me to correct it, thanks!