hi, i ordered a pcb from china. this is my first pcb printing. first they reject because mistakenly i produce 2 layer pcb instead of 1. then i delete top layer and send files ack to them. which is bellow named "my_project.zip". but today they do something with my files and send a message
"Dear customer, pls kindly confirm the production file is correct or not?" and send below files named "their_offer.zip".
this is very standart 1 layer pcb so my question is
1- please look at my project and tell me if did some stupid mistakes?
2- cadcam drill files is empty (maybe i am wrong?). but i want them to drill every pad plus one component mount leg. will they do it with theese files? i used proteus. so there is a any section that should made configuration for drilling
3- why they send me this files. is it because i did some mistake?
i reallly need help in this. i am very appriciated with all your help.
thank you
Have you asked them?
I had a quick glance at your PCB; it's not a great layout, but I don't see anything that should lead to manufacturing problems. Perhaps I missed it; the blue on black stuff is heard to read.
maybe they want to confirm that this is final version. because i had changed it. so will they drill holes with this cadcam? in proteus where should i configure drilling ?
Ask them! You're asking all kinds of questions that they can answer for you. Why do you expect random people on the internet to be able to answer questions about the production decisions of this company?
very good point. but their customer service are very bad. i asked all these to them but they only answer like this
"please confirm that this is ur final version"
The drill files are not empty. Yes they need these. Not sure why you have plated through holes with a one-layer board though, that might have confused them. Single sided are not normally plated through, its a shorter process.
Also they might be expecting more useful file extensions for the Gerbers like .GTL, .GTS, .GTP etc etc.
Apparently it was a 2-sided design and he had to remove one layer on account of the manufacturer, and now he made a provision for wire bridges. It's a weird story with a manufacturer apparently not being able or willing to do a 2-sided board. I do agree they don't have to be plated through.
good point. but proteus place them automatically. u re right i don't need plated through holes. how can i fix it? should i change all of them with what? "rectangular SMT pad mode" ?
You've probably used double-sided parts from the library, so the pads are double-sided.
Just provide a double sided version of the PCB, even if no traces are on the top side, its probably easier, and plated holes are so much stronger and prevent pad-lifting (the bane of single-sided PCBs).
Unless cost is an issue, yes, its a 2-sided board that just happens to have no topside traces, but you get the benefit of plated holes and top side silk-screening automatically.
Note that single-sided footprints typically have larger, oval, pads for better pad-adhesion to reduce the risk of pad-lifting, and your parts library might not have single-sided footprints for common parts.
Two sided footprints normally minimize pad sizes for easier routing.
I just had a quick look on allpcb.com . For a 2 sided board the cost is 1.80 and for a single sided board it is 1.40 per board ( Basis: 100*100mm, based on 5 pieces, delivery not included, currency CHF)
Unless you are making a bulk order, the cost savings are very small and anyway dwarfed by the delivery costs.
the purpose of 1 leyer choice is not saving money. i m not familiar with pcb s and i did first pcb prototype with acid. so i dont want to change layers. but now i am learning and changing it to 2 layer
Is making PCB's supposed to be this hard? I draw a schematic using Eagle, then put the components on the board editor, autoroute, make a Gerber zip file, sent it to JLCPCB and two weeks later, I get my boards.
The hardest part of this process is finding the correct parts on the schematic design.
If i buy the parts, i make sure i have them upfront, so i can adjust the footrprint to reality. But if they buy and solder the parts you don't want to have to buy 2500 of them. Some parts they have almost no collection.
JLCPCB customer service is a hassle though. If you have an order with multiple boards, then if 1 board doesn't pass they can make a huge mess of it. Their xero-rotation rules are ambiguous, and their 'engineers' will suggest corrections according to their experience. Engineers, or factory workers is what they are really, know that in their experience, the best way to set zero-rotation is by the way they are in the machine. Anyway, getting a PCB from them is not too hard.
