Schmartboard Header Layout?

eldonb46

(this is a re-post of my misplaced response, here it is a new question)

I have just built several Schmartboards (using the SMD parts) for a Swarm Project. All boards are working!

Now, I want to build a custom shields for the project. But I can not find the Header "layout" for the Schmartboard. It appears to be a mix of Imperial (pin to pin) and maybe Metric (header-to-hearder). I have attempted to scale and measure the Photos but with only limited results.

Is the Schmartboard header and part layout documented?

Thanks
Eldon

tonyp12

Here are the coordinates (mm) for those 4 locations:

J5-pin1: (11.684,35.052)
J6-pin1: (25.4,3.048)
J7-pin1: (48.768, 14.224)
J8-pin1: (48.26, 47.752)

(0, 0) is in the lower left corner.

eldonb46

tonyp12,

Thanks for the Data, it will help with my project.


I am curious about source of your data, is it maybe;

Values extracted from a Photo?
Mechanical Measurement?
Optical Micrometer?
Data from the Original Artwork?

If I had known it was this much trouble, I would have measured my raw boards before parts were loaded.


My initial discovery was that J7 is not centered between J6 and J7 (as per your data, and my attempt at pin alignment), and it is not inline with the right-most pins of either.


It amazing that a product like the P8X32-Q44 Schmartboard/EZ, that was created for profit and public acceptance, was created with what appears hap-hazard header placement. Hopefully there is an unknown integer grid that can be deduced.


I think the P8X32-Q44 Schmartboard/EZ will be great for my projects, but the lack of standard header layout or template is disappointing.


If there is interest after I am finished, I will post a DipTrace Layout with Locked Headers from the best data that I have.

Regards,
Eldon

tonyp12

Was provided to me by tommy.chen@schmartboard.com
as I asked them that same question a year ago.
So I guess he fired up his pcb software and got the numbers for me.