[sdiy] Does anyone here use JLCPCB for SMD assembly ?

[Mike Bryant]

Hehe - those are exactly the same errors I get.  Lily said they fixed all of them but they never say what to fix to avoid it for the next batch.

-----Original Message-----
From: Mike Beauchamp [mailto:list at mikebeauchamp.com] 
Sent: 27 October 2021 23:20
To: Mike Bryant; synth-diy at synth-diy.org
Subject: Re: [sdiy] Does anyone here use JLCPCB for SMD assembly ?


> You must be knocking them out about once every 2-3 days :-)    I'm lucky to get one ready for build every three months.
> 
> Yes the preview images have gone from bad to hopeless but it's more the DFM report I'm now worrying about as what used to be a couple of devices too close or similar is now becoming a very long list of problems, many with no explanation.
> 

I just checked a old DFM report and noticed that I got errors:

"spacing too close" on some TH parts that were soldered in without issues

several "unknown" errors on SMT parts that also ended up being populated no problems.

Also some "Cannot find this Pad in your PCB" on some SMT flatflex headers that ended up being correctly populated.

"The pad centroid is different from component centroid" on some SMT components that ended shipping no problems.

So yeah, definitely some weird messages on that DFM page - looking at it now sort of reminds me that I never take it too seriously. The "fixed" 
image does show the components in their proper place and oriented properly, I definitely double-check that for orientation of polarized stuffs.

As for the 250 boards, they're mostly sub assemblies in quantities of 50 for a larger project that's been taking over 3 years.

Mike