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Ultrathin business card runs a fluid simulation

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201–210 of 234 posts

Re: Ultrathin business card runs a fluid simulation

#201
post #191

>Amazing project, but the font on the back of the card is gross. >It sort of reminds me of those research professors that have received multiple awards and their website is an unstyled HTML page with 4 links >If they used a sans-serif font then they would have nailed it >this particular serif font was also a poor choice out of the variety of serif fonts out there >that's awesome, but i think since it's a business car…

A few business card typography tips off the top of my head:

— White on black (inverse) is less legible, so all else equal compared with black on white the font should be bolder and/or bigger for equivalent readability. (Using caps or small caps is also OK in display text like titles, if it reads easier.)

— Legibility is also impaired by visual noise around the text (it’s not a single color but there is some pattern, for example). Compensate for that, too.

— Unless you really know what you are doing, stick to one font. You can use bolder/lighter variants of the same font.

— Never compress fonts vertically or horizontally. Instead, pick a different font. Many fonts have condensed/compressed alternatives, or there is also Impact if you want it.

— Use white space. Padding lets it breathe.

— Use typographic features. Em dashes (separate them by thin spaces), bullets.

> Embedded Design⠀⠀⠀Hardware ∙ Firmware

or

> Embedded Design — Hardware, Firmware

vs.

> Embedded Design - Hardware/Firmware

That said, everything except the first two is subjective. A relaxed vibe of “don’t give a damn about it” might be strategic if you are good at what you do (and crucially it is not design), as long as your card is legible and does its function.

Re: Ultrathin business card runs a fluid simulation

#202

Very nice, but probably a bit too expensive to just hand out. I knew a chap that had a similar hardware business card (I don't remember exactly what it did, but it wasn't as cool as this one). I remember that his card was pretty scuffed up, and he insisted I give it back, after he handed it to me. Bit weird.

Exactly my thought. Just make it a desk toy.

Re: Ultrathin business card runs a fluid simulation

#203
post #114

> One of the more difficult features was the rechargable battery. Flat ones do exist. I have one eink TOTP card that's no thicker than a normal credit card. And also an airtag style tracker that's about twice as thick. Maybe it uses the same kind of battery.

seems dangerous to have terminals of battery exposed, shorting (and with rechargeable, burning) hazard

Some conformal coating spray would probably be all that’s needed.

Re: Ultrathin business card runs a fluid simulation

#204

Earlier quoted context omitted.

The circle works much better for the fluid simulation.

And now I can’t stop thinking about those circular LCDs and OLEDs they sell in China as (evidently if unofficially) devboards for not-overly-smart watches, thermostats and such.

I bought one recently and none of the provided code samples would compile. Zero support.

Re: Ultrathin business card runs a fluid simulation

#205
post #95

Earlier quoted context omitted.

I'm just imagining interviewing a candidate for a job involving embedded systems and this dude pulls this out at the end and says "If you have any other questions, my email's right on there." What an absolute baller this guy is.

Still has to respond "no" on the post interview scorecard because the given solution didn't use the optimal ObscureLeetCodeAlgorithm

I mean, the candidate can design and build innovative custom hardware, but do they remember an obscure impractical algorithm from a second semester CS course? No? Obviously not a fit for this company.

Re: Ultrathin business card runs a fluid simulation

#206

Advantages of a business card sized hollow box partially filled with water: * more realistic fluid motion * cheaper, easier build * easier to debug Disadvantages: * risk of wet butt when you sit down * less joy of doing hard things

* no rust

Re: Ultrathin business card runs a fluid simulation

#207

Very nice, but probably a bit too expensive to just hand out. I knew a chap that had a similar hardware business card (I don't remember exactly what it did, but it wasn't as cool as this one). I remember that his card was pretty scuffed up, and he insisted I give it back, after he handed it to me. Bit weird.

You don't hand out business cards to everyone, only to those who deserve one.

Re: Ultrathin business card runs a fluid simulation

#208
post #152

Earlier quoted context omitted.

I half expected this to have a button/mode to show custom QR codes...

I tried, that's why it's 21x21. Still haven't managed to get it to read.

I might be wrong, but you might need need (at least) a 23x23 LED matrix to have a white border around the outside to give it the contrast needed (the "quiet zone", since QR data is black).

Re: Ultrathin business card runs a fluid simulation

#209

Earlier quoted context omitted.

Disadvantages: * excessively fast fluid motion at card scale

increase viscosity of said fluid

It doesn't work that way, unfortunately. The virtual fluid represented by the LEDs does not move anything like syrup. It's like looking at a small image of water sloshing in a big tank.

To get of fluid to behave that way on the scale of several inches, the fluid would have to be massive (very dense) while simultaneously gravity would have to be reduced.

Re: Ultrathin business card runs a fluid simulation

#210

Advantages of a business card sized hollow box partially filled with water: * more realistic fluid motion * cheaper, easier build * easier to debug Disadvantages: * risk of wet butt when you sit down * less joy of doing hard things

* no rust

Unless the case is iron.
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