File Excellon

[Plopiche]

Hi,
I have a problem with a PCB that I have manufactured by Seeed Studio.

They write to me that my excellon file does not correspond to the circuit that I sent. (See attached Seeed screenshot)

Indeed there is a problem.

I don't see what I did.

However, this is not the first circuit that I have sent them.

On the other hand I don't know how to view the excellon files to check that they correspond to my circuit.
Does anyone know how to view my Excellon file?
And above all tell me how to visualize it to check it.

Thanks for your help

[jmelson]

Both Excellon and Gerber files are variants of RS-274, commonly called "G Code".  But, one of them suppresses the leading zeros, the other suppresses the trailing zeros.  In both cases, the decimal point is suppressed.  There is a format specifier line that begins "FSLAX" and tells what the format is for the X coordinates, then after the Y it describes the Y format.It is most likely that Seeed's software didn't recognize your format specifier.
There are various CAD/CAM packages that are meant to check Gerber and drill files.  Also, cad packages have various options to set number of digits to send in the files, and where the origin is to be.  I use Protel 99, and have to always set "use relative board origin" or the Gerbers and drill file do not have a common origin.
Jon

[thm_w]

You should post the settings used to generate the drill holes.
It looks like the hole size is correct but the xy position placement is not.

[Doctorandus_P]

It looks like the hole size is correct but the xy position placement is not.

If those red dots are the drills, then their spread is bigger then the size of the PCB. The pattern also does not match.

The most logical explanation is that you generated the drill file some time ago, then modified the PCB, generated new gerbers, but forgot to create a new drill file. What are the file dates? Do you recognize that hole pattern (especially the 4 holes in a rectangle).

A lot of PCB design programs have a gerber viewer and can also load drill files. I use KiCad myself and it can to this. There are also online gerber viewers.

[Feynman]

Gerbers/drill files should always, always, always be checked with a third party tool. Personally, I'm using the gerber viewer integrated in KiCad. Of course, I'm not designing my boards in KiCad as I wouldn't consider this "third party". Another good tip is to use the excellent online PCB analyzer from Eurocircuits to check your data.

Your current project looks like a file mix-up (wrong/outdated drill file).