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Ultrathin business card runs a fluid simulation

github.com

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Re: Ultrathin business card runs a fluid simulation

#61

Post by ciaranmca »

phkahler wrote: post #56

It would be cool to have a USB C connector that goes through the PCB so total height is that of the connector and not board+connector. Like this one: https://www.adafruit.com/product/5180?srsltid=AfmBOopEIapZEq... But with supports along the sides that could solder one the top and/or bottom of the PCB. You'd have a notch cut out for the connector.

Thought the same but from what I can see those are somewhat uncommon, presumably you are unable to affix them to the board as securely as the typical connectors

Re: Ultrathin business card runs a fluid simulation

#62

Post by burnt-resistor »

alnwlsn wrote: post #59
burnt-resistor wrote: post #48

Earlier quoted context omitted.

As long as there aren't surprise 50% tariffs.

This was something I had to look into earlier this year. We found that even if tariffs were 200-300%, JLC and PCBway are still half the cost of domestic USA board houses, while also somehow providing half the leadtime. They are an absurdly good deal.

Yep. And if you go to Shenzhen, some shops will take on varying amounts of board design and prototyping for you. It's possible to get boards fast and for cheap, like less than a few days and even cheaper when the goal is larger quantities for semi-serious products.

For a few hobby or toy things, the fixed rate board stuffing shops are the way to go.

Re: Ultrathin business card runs a fluid simulation

#63

Post by elictronic »

unwind wrote: post #29
OisinMoran wrote: post #28

If you like this, you'll also love Mitxela's fluid simulation pendant [0], and likely all of his work! I'm consistently astounded by how informative and enjoyable his stuff his. He shares so much, so freely and it's so well produced, with a lovely voice to boot. Inspirational! Watch his vids, read his write-ups or both! We need more people like this. [0] https://mitxela.com/projects/fluid-pendant

That was very clearly mentioned and linked in the article, too.

Guessing he found it from the reddit post where he mentions it in lower parts of the comment chain but not in the actual post. The project itself does clearly mention it but I had the same reaction when I first read the post remembering the mitxela project clearly. https://www.reddit.com/r/embedded/comments/1mkkd4z/my_busine...

Re: Ultrathin business card runs a fluid simulation

#64

Post by echelon_musk »

phkahler wrote: post #56

It would be cool to have a USB C connector that goes through the PCB so total height is that of the connector and not board+connector. Like this one: https://www.adafruit.com/product/5180?srsltid=AfmBOopEIapZEq... But with supports along the sides that could solder one the top and/or bottom of the PCB. You'd have a notch cut out for the connector.

The images in the GitHub show that the card has this.

Re: Ultrathin business card runs a fluid simulation

#65

Post by fidotron »

DonHopkins wrote: post #51
fidotron wrote: post #34

The typical Chinese sources have been selling "digital hourglass" type ornaments that work like this for a while. There was a whole game based on this sort of thing back on the Acorn Archimedes: Cataclysm https://www.youtube.com/watch?v=3Byyz1Vlv8w It got remade for the 360, but the original was regarded at the time as surprisingly impressive for the machines it was running on.

Is there a Digital Disco Ball?

You could make a bad analogue of such a thing using WLED - although as many people have observed it has a tendency of turning anything anywhere into looking like a vape shop.

The problem is so much of the effect of a disco ball is irregular directional beams reflecting off it, which would be hard to do.

Re: Ultrathin business card runs a fluid simulation

#66

Post by cameron_b »

phkahler wrote: post #56

It would be cool to have a USB C connector that goes through the PCB so total height is that of the connector and not board+connector. Like this one: https://www.adafruit.com/product/5180?srsltid=AfmBOopEIapZEq... But with supports along the sides that could solder one the top and/or bottom of the PCB. You'd have a notch cut out for the connector.

In the implementation, the design uses a 'card edge' type connector with the whole PCB fitting into the constraint of the thickness of the center blade of the USB-C connector. So when charging, the board slots into the cable-end connector, and when not charging there is only the PCB. The PCB has cut-outs for the cable-end connector to fit into the PCB -- so like you're saying, but even thinner.

Re: Ultrathin business card runs a fluid simulation

#68

Post by phirks »

gcapu wrote: post #57
Nevermark wrote: post #47

Earlier quoted context omitted.

That’s cred, man. Real cred. Wack font. Circuits exposed. Pixels with fat borders between them. An ugly charging port. But more stuff, packed into a small sleek volume than reasonably possible. Working perfectly. That’s not Jobs. Oh, no. It’s effing Woz. The guy is a true hardware engineer.

For the most part I agree, but the purpose of a business card is to be read. You can barely read that text.

The render is pretty gnarly, but it's not quite that bad in person

https://github.com/Nicholas-L-Johnson/flip-card/blob/main/me...

Re: Ultrathin business card runs a fluid simulation

#70

Post by JKCalhoun »

rwmj wrote: post #6

Would love to see more information about how it was built. He must have worked with a company that can do the surface mount assembly?

Yeah, wondering how the LEDs were aligned so precisely. Some kind of silicone grid-like jig to hold them while the solder reflows? Or is it just pick & place robotics doing what they do with precision?
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