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-   -   Overlays for Chipamp.com LM3886 boards? (https://www.diyaudio.com/forums/chipamp/287975-overlays-chipamp-com-lm3886-boards.html)

Hogwild 5th March 2016 02:52 PM

Overlays for Chipamp.com LM3886 boards?
 
Hi everyone:

Has anyone created overlays for the LM3886 boards from Chipamp.com?

I could use really use these for something at the moment. Anything here or is there anything posted on another Website?

Thanks

peranders 7th April 2016 08:51 PM

Have you checked the available documentation at the website? I can find it in 5 seconds, you know.

Bill_P 8th April 2016 02:42 AM

1 Attachment(s)
Is this what you are looking for?

Hogwild 27th April 2016 02:40 AM

Bill_P:

Thanks, but not quite. I'm still an extreme newbie (even after all my efforts and travails). But I believe an overlay shows the circuit traces on the bottom overlaid with the component names and/or values on top. In other words, both sets of graphics/text on the same surface.

peranders 27th April 2016 05:50 AM

When you place the parts you don't need to see the copper pattern, only where to put the part. You haven't try to contact the company you bought the pcb's from?

BTW: You can also look at the physical boards if you want to know how the copper tracks look like.

Hogwild 28th April 2016 06:38 AM

Chipamp.com made it clear to me that they do not have any overlays for their products.

It was a nice thought, though.


Quote:

Originally Posted by peranders (https://www.diyaudio.com/forums/chipamp/287975-overlays-chipamp-com-lm3886-boards-post4694902.html#post4694902)
When you place the parts you don't need to see the copper pattern, only where to put the part. You haven't try to contact the company you bought the pcb's from?

BTW: You can also look at the physical boards if you want to know how the copper tracks look like.


peranders 28th April 2016 05:57 PM

Just wondering: what do you mean by overlay exactly? Altium Designer for instance has this as term for the component print layer.

Hogwild 29th April 2016 10:58 PM

From:

PCB Layers | BitWeenie

QUOTE:
"Overlay or silkscreen layers provide, among other things, the text designators for your components on the top and bottom layers. If utilizing these layers, separate files should be provided to the fabricator for the top and bottom overlays. There is no need for overlays on internal layers (you’d never be able to see them!). If you don’t care to have text on your board, these files are not necessary. However, text is immensely helpful, especially when debugging boards in the lab."

grimberg 29th April 2016 11:16 PM

They are called overlays because they are the last layer applied during the manufacturing process. Overlays DO NOT depict traces. They are meant to show component designators and other information like model, version, etc. Most PCB CAD software also include the part's footprint and optionally, its value.
I have assembled several of the Chipamp.com PCBs and all of them, without exception, had the overlay, that is, the white silk screen layer with components' footprint and designator.
What exactly are you missing? What kind of help do you need?

Hogwild 29th April 2016 11:33 PM

To be honest, I don't know exactly, as someone is helping me with this. But what you describe shows the component designators on one side and the traces on the other side. I think what I'm looking for is both on one plane.

EDIT: OR both layers, so that I can superimpose one on top of another


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