ฝัง
- เผยแพร่เมื่อ 17 ธ.ค. 2021
- Making a PCB with laser directing imaging
Recommended links:
1: Ldgraphy • Making PCBs with LDGraphy
Laser direct imager with reflective polygon and no f-theta lens
2: picbasic www.picbasic.nl/etsen_etsen.htm
Dutch website on how to make PCB - วิทยาศาสตร์และเทคโนโลยี
I hope youtube promotes this video, and you gain the legend status you deserve.
Such amazing work.
Thanks maxwell!!
Thank you very much for the video.
Could you please tell me what are the differents technologies that can be used in LDI technology?
I think GLP and DMD can be used. Am i right? What elese?
thank you
I have made a list of alternative exposure technologies here reprap.org/wiki/Open_hardware_fast_high_resolution_LASER#Alternative_Exposure_Technologies
Acoustic optic deflector, reflective polygon scanner, optically addressable light valve, DMD, grating light valve etc. Most are covered on the list.
Thank you v much your the best. Only a few of these Tech can be used in the LDI for Lithography right? and i thought that Orbotech uses Reflective Polygone Scanner
is it the same as Rot Mirror with reflective F-theta lens and one laser bundle?
@@cosanostra8341 orbotech is refractive f-theta lens, reflective f-theta lens is used by next scan technologies. Correct, not all are commercially used for LDI, some are not suitable
Diode lasers develop rectangular beam shape, not square. Unfortunately aspect ratio is like 5-8 to 1 so you have to use unusual optic like a cylindrical lenses or other solution is using shutter that make your beam square or close to it (but it mean you lost 75% of laser power). As long as flying optic isn't best options the regular laset ploter may need a lot of times since you will make sharp tiny shapes. It will be many many passes with beam of 0.05 mm diameter. 20 lines per mm, 5 cm wide board need 1000 passes. 2 sec per pass and 5 x 5 cm board need be lasered up to one hour.
Partly agree, the prism can rotate up to 24000 RPM and has 4 facets, so 1600 lines per second and is much faster per pass than one line per 2 second. My system operates at 2000 RPM and is very slow in the movie as each line is exposed, I believe 16 times. I did not use full laser power and speed to simplify debugging and as it is easier.
I love capibaras
this great project but I think you need more modification to be commercial one
I am working on a product which is easier to use. Bringing a product to the market is not easy.
@@Hexastorm at large factory they use large high DPI UV LED screen to direct expose to PCB but your idea is great for small and DIY users .
Originally, a system was developed for large substrates (look for AMSYTEMS). My version would indeed be DIY, small scale. Advantages would be it can expose curved substrates. Also high power lasers can't be directed by LCD or LED screen.@agaberahmed6657
Hey there! I am just now watching your videos.This project is extremely interesting and i would like to use this as a base for my own work. I know ldgraphy, but i would like to do my own, compact version for exposing pcbs with a laser. Your google files are not accessible anymore (looks like google + has been deactivated). I would have some questions on the type of laser used and lots of other details. Are you interested in a collaboration? In exchange, i could provice some cnc machined parts (have built my own small cnc machining center)
Hey Tesla atoms, I am open for collaboration. You can sent me an email on info@hexastorm.com. All code is shared via my Github profile
github.com/hstarmans. I am willing to answer specific questions, clarify decisions or change code so it simplifies collaboration.
I do not have a lot of time for support.
here is a summary presentation th-cam.com/video/b7ArZDhsyfI/w-d-xo.html
@@Hexastorm Thank you so much for sharing this, this content is GOLD!
Can we use it for double layer pcb printing?
If you have board which you can expose from two sides, and align front and back within 0.3 mm you could.. biggest challenge is probably vias
@@Hexastorm can this be used for single layer aluminium mcpcb aswell?
@@bibinvarkey3041 it can.. you can even use it for other substrates. Coat it your self, expose it and then remove the exposed parts using chemicals and then deposit or remove chemicals on the revealed parts. Hereafter remove the coating. It is not my area of research however.
if you need just 3cm wide boards then it will be usable, for anything else nah,, try an LCD 3d printer screen.
Roel, you r right that for this sort of layout, I could also have used a LCD screen. Video is mainly used to show that the technology works. Maybe I will add more examples later.
@@Hexastorm at 2:46 you talk about the imperfections, this is mainly caused by the resolution of the design (file) and the resolution of the machine. both need to match the same or a multiply of it. in this example (photo from Mr. Heller ) i blame the mechanics for it. never the less, it's a promising concept. I prefer to make the artwork on negative film and therefore I am thinking of using an drum instead of the mirror.
I've had some great success using a resin 3D printer also. My choke hold is finding a simple way to get from eagle Cad to a 3D image that I can slice. I've used photo sensitive boards and when I have enough fails, I reverse the image and use resin as the resist. messy but very cheap. "Learn how to fail fast and cheap" Elon Musk.
@@alexportiiii6414 You can also buy the display and an adapter to convert HDMI to MIPI DSI off aliexpress (or just the adapter). I considered using the resin printer and its firmware... but I wanted something more compact and would drive it with raspberry pi. I haven't finished it because the laser method is more interesting to me.