Electronics > PCB/EDA/CAD

Best way to trace existing PCB (not for piracy!)

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Hey all,
The membrane keypad on my garage sale Mitutoyo DRO has some breaks. Discontinued decades ago and replacement part (if available) will likely be 5-7x more than I paid for the whole DRO (which otherwise works).
I attempted several different micro-surgery methods to no avail - the tracks are held to the plastic film with wishes and unicorn tears.

So, I figured I would make a PCB with physical switches (low-profile tactile pushbuttons) to replace it. I've scanned the back of the membrane keypad and would love some advice as to what is the best way to clean it up and get it into a format for JLCPCB/PCBway/etc, please.

I've attached what I've done so far. (The PNG is sourced from am SVG file, which I had to 7-zip up to attach to this forum.)

Thank you in advance,

Dax Liniere.

The easiest would be to measure the locations of all the buttons and recreate the board in a CAD. KiCad is free and would do the trick. There is no good way to get manufacturing files from a picture.

Don't bother with the film, make a regular PCB with a connector and use a regular ribbon cable.

Thanks, ataradov, but where there is a will, there is a way. ;)

Yep, I'm not evening thinking of another membrane/flexible 'board'.  :-+

If you are familiar with any CAD tool, it would take a couple of hours at most to recreate this.

If you are not familiar - this is a good opportunity to learn. All you would need is create one button footprint. You won't even need to make the schematic, you can just layout the board.

Yes, this is exactly what I'm asking: What is the best tool to use to trace over this? I have no desire to draw up the schematic as it's irrelevant to manufacture.
Should I do this in CAD/F360 or should I be using a dedicated PCB design tool? I will eventually need Gerber files, I'm sure.


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