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| xobs | synaption: I used a company recommended by my CM -- Mulltech. However, they're having a ton of issues making PCBs. Turns out Fomu is a challenge to make. | 03:42 |
|---|---|---|
| xobs | HG + ENIG + edge plating + 4-layer blind-buried. I think it's the HG that's the issue. | 03:42 |
| xobs | Oh, plus 0.1mm traces. | 03:42 |
| xobs | If I were to do it over again I'd go with http://www.kingcredie.com/ but only because I know them, and they're amenible to doing weird things. | 03:43 |
| tpb | Title: King Credie | Printed Circuit Board (PCB) Manufacturing | Online Quote (at www.kingcredie.com) | 03:43 |
| xobs | But you might try pcbway. They claim to be able to do it, and they have a reasonable interface. | 03:43 |
| LWK | HG?? | 06:27 |
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| xobs | Hard gold. If you don't use hard gold, then it's only rated for around 200 insertion cycles. I want your Fomus to last. | 06:35 |
| synaption[m] | thanks. I was actually reading bunnies blog and he said he used king credie for everything except laser drilled microvias | 06:35 |
| xobs | But HG makes it difficult to solder to it, so they mask it off. | 06:35 |
| synaption[m] | but maybe that info is out dated | 06:35 |
| xobs | synaption: they do laser drilled now! | 06:36 |
| synaption[m] | Min Laser Drilling = 0.1mm looks like | 06:36 |
| synaption[m] | small enough? | 06:36 |
| synaption[m] | neat | 06:36 |
| xobs | Yep! I quoted Fomu there. They'd do Fomu, but without the masking. | 06:37 |
| ssb | hi! How would you guys suggest to connect to Fomu's pads? I want to use them all for a SDR receiver, but do not want to solder ). Make a tiny jig with pogo pins and attach it somehow to the case? | 07:15 |
| ssb | or not worth the effort and just solder it (and buy some more Fomus+) | 07:17 |
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| * synaption[m] sent a long message: < https://matrix.org/_matrix/media/v1/download/matrix.org/dAweiyxFewAeONjluAMKFTUv > | 08:01 | |
| synaption[m] | I seem to have fixed the error I was having earlier | 08:01 |
| synaption[m] | and I made a PR | 08:02 |
| synaption[m] | now I'm not seeing the buttons do anything.. are they just hard to "press"? | 08:02 |
| MadHacker | ssb: Solder and buy more fomus; if you want another way to make a connection, spring-loaded test clips should sit nicely in the mouse-bites at the edges of the pads. | 08:15 |
| MadHacker | https://www.amazon.co.uk/Oiyagai-Single-Electronic-Testing-Colors/dp/B07CJ5YWDP/ something like these (not a specific product recommendation, just something in that style) | 08:16 |
| ssb | MadHacker, ok, thanks! | 08:20 |
| MadHacker | If you're feeling adventurous, you could make your own fomus into your board; the schematic and PCB layout is open source. Manufacturing is a little awkward because of the small package size, but it's doable. | 08:21 |
| synaption[m] | NVM, I got the buttons to work using a wire. I guess I thought it would work with a finger | 08:51 |
| MadHacker | Try a wet finger. | 10:37 |
| MadHacker | :) | 10:37 |
| synaption[m] | lol | 10:38 |
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