[SMT Assembly] Wrong components placement
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Paul Parneix 1 month ago
Helle there, I wanted to try the SMT Assembly option on a new project, decided to try EasyEDA for maximum compatibility. I Exported BOM & CPL files from EasyEDA, but when placing order on JLCPCB, components position / rotation / polarity seems completely mesed up on the preview  : ![cpl.jpeg](//image.easyeda.com/pullimage/vFWEbzw3bieypwhbdDtJrqhoAy553tKxMjkNbSWq.jpeg) It is a preview error ? or do I have to edit the files manually ? Thanks. Paul.
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Kaisha 1 month ago
I came across the same problem.  Not only were the components all over the place, but the polarity of some of the diodes was reversed. ![Relay3.jpg](//image.easyeda.com/pullimage/pNT1WxTlSQyY0NeSLb5z8mCiMXjO9MCWJ4kAe6go.jpeg)
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Rodrigo Venegas 1 month ago
I have the same problem
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Paul Parneix 1 month ago
@Kaisha: hmm positions looks correct in csv file, and bug seems consistent in your picture and mine, so I guess it's a bug on JLCPCB viewer. But not quite sure about polarity and rotation.
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Kaisha 1 month ago
The translation seems uniform across all the components, so I can see that might just be a preview bug but the mosfets and diodes are rotated 180 in the wrong direction.  The LEDs, though, are correct.  Also the small text is all rendered incorrectly. I'm hoping that someone from JLCPCB will look into this, I'd rather not spend $50 on a set of boards only to have to desolder half the components and resolder them by hand.
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pcb_Service 4 weeks ago
Dear Paul, This is Eunice from JLCPCB group. We are so sorry for the inconvenience caused to your order. The online previewer result is only for reference, the final SMT board will be made exactly according to your design, so please double check and comfirm there is no problem in your design, our engineer will check the components position / rotation / polarity for you and assemble your board as your design is. Currently we are keeping working on the previewer, thanks your feedback, we will try our best to make the previewer more precise to customer for reference. Since our SMT service is newly launched, if there is any problem and advice concerning the ordering system and the SMT service, please just feel free to contact with us at [[email protected]](mailto:[email protected]). We look forward to your precious advices and make our service better.
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Kaisha 2 weeks ago
While components are now centered correctly on the board, the diodes are still backwards. ![Relay4.jpg](//image.easyeda.com/pullimage/hODs1O46Si4lzPBSC7ypZCNrf59QTxMtKu0xSOeM.jpeg)
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UserSupport 2 weeks ago
Copy to @Andyfierman @Kaisha @rodrigo.venegas.13 Hi There are some methods to solve this issue: 1、modify pick and place file rotation manually, and then re-upload. 2、re-assign a correct 0 orentation package(you can find a new one or edit officail pcblib save as yourself lib) muanlly at the schemactic, and update to PCB, re-export the pick and place file and re-upload.  [https://docs.easyeda.com/en/Schematic/Footprint-Manager/index.html](https://docs.easyeda.com/en/Schematic/Footprint-Manager/index.html) 3、waiting for EasyEDA update all smt part, that will take a long time. please report error when you met these issue: [https://docs.easyeda.com/en/Schematic/Report-Error/index.html](https://docs.easyeda.com/en/Schematic/Report-Error/index.html) 4、waiting for JLCPCB support to modify the rotation when ordering, that will take a long time Thanks
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JohnBerg 2 weeks ago
@Kaisha Q1 is also rotated! I have the same problem. In the previewer, the components are in the right place, but IC's are 90 degrees rotated. I wonder if a order for assemblie will go well? Thanks
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Kaisha 2 weeks ago
Thanks for the info UserSupport.  Can I assume then that the previewer is correct, and that if I make the changes and it shows correctly in the preview that it will be built correctly? The whole point of choosing easyeda/lcsc/jlcpcb was because its tight integration would eliminate these sorts of issues.  At the very least basic parts should have proper footprints and placement.
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Paul Parneix 2 weeks ago
@Kaisha, on my side, component placement is still offseted. Have you done any trick to make it work ? Best. Paul.
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Kaisha 1 week ago
Nope, it seemed to fix on its own.  Haven't checked in the last week though, been busy with other stuff.
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