Nick Parker @NickParkerPrint Twitter profile

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Nick Parker

@NickParkerPrint

11 days

Lincoln Lab researchers appear to have invented a viable new class of motor in 2021??? They use electrowetting of tiny water drops which sounds like high voltage low force bullshit, but no! Competitive power and torque densities to conventional motors! WTF??

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Nick Parker

@NickParkerPrint

4 months

@MorsExMare

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Nick Parker

@NickParkerPrint

4 years

Did you know Disney has a research division? They do super cool stuff, all in the pursuit of better animation, theme park animatronics, and toys. Here's a thread of some favorites with possible applications!

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Nick Parker

@NickParkerPrint

7 days

Has anyone seen cool projects with the Naneye cameras? 320x320 60fps in a 1mmx1mm package for <$100. They're disposable surgery parts but also just like, on digikey. Four year old part at this point, where are the cool projects??

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Nick Parker

@NickParkerPrint

21 days

Just found this awesome paper biomimicry-maxxing a robotic forearm. If you've ever stared at your arm rotating your hand back and forth wondering how tf two solid bones rotate 270 degrees, this is for you

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Nick Parker

@NickParkerPrint

11 days

Without exaggeration, this is alien tier technology and it's been kicking around in a Nature paper since 2021. I'm bewildered, these dudes should have a $100M valuation. They're using the things to package AI chips! Cmon!

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Nick Parker

@NickParkerPrint

7 months

@emollick There are no alternative natural sources. Fully synthetic quartz is a mature industry, if we lost spruce pine it would expand to absorb the demand aiui. It would cost much more, but this is one small part of the semi supply chain so the total downstream impact seems small imo

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Nick Parker

@NickParkerPrint

11 days

I mean this paper is just a candy shop! - Natively nanopositioning capable - Native support for gear ratios without efficiency loss?? - Trivial, ultradense packaging of multi-stage actuators? - Self alignment during assembly?? - Layer to layer interconnect with the same tricks??

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Nick Parker

@NickParkerPrint

11 days

Paper link:

Multilayer microhydraulic actuators with speed and force configurations

Microsystems & Nanoengineering - Multilayer microhydraulic actuators with speed and force configurations

www.nature.com

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Nick Parker

@NickParkerPrint

11 days

Oh by the way they have insane acceleration. Full speed after the first step. This is realtime! Cmonnnnn

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Nick Parker

@NickParkerPrint

1 year

DARPA should create a student competition where each team fills a shipping container with drones and tries to win a war of attrition against the other teams. No holds barred no human control, just two shipping containers duking it out in an empty field

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Nick Parker

@NickParkerPrint

2 years

Look at this ADORABLE little thermal camera I bought for work $1400/ea and allegedly 640x512 resolution in MWIR, also allegedly 60 fps (?!?!) which is SUPER ITAR, but this came from China and I’m in Canada sooo Will report back once I get their software and test this thing

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Nick Parker

@NickParkerPrint

5 months

@nahrzf Slocum's fundamentals of design will make you a better mechanical engineer for anything that moves than many mechE degrees

FUNdaMentals of Design - MIT MEDICAL DEVICE DESIGN

“Design: Creating something with your mind that frees endorphins” – A. Slocum Lectures (.pdf) Design Spreadsheets (.xls) Introduction 1 – Design is a Passionate Process 2 – Creating Ideas 3 –...

meddevdesign.mit.edu

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Nick Parker

@NickParkerPrint

5 months

@high_byte @arithmoquine This is the actual question. It's clearly "What's the last of these options you care about at all?" not "which one do you care most for?"

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Nick Parker

@NickParkerPrint

11 days

AI chip tool using the actuators:

04.30.24-Startup-Ecosystem-Conference-Startups-Sangtera

Build 3D AI Chips FasterTairan WangCo-Founder & CEO, Sangtera

www.youtube.com

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Nick Parker

@NickParkerPrint

2 months

@PrinceVogel @uncle_deluge Not really. I work with molten plastic so even if I bothered to get tests my baseline is prob way above normal

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Nick Parker

@NickParkerPrint

10 months

@kane I mean depending on Gs the roll is also a good idea for the human pilot. IIRC humans are ~3x better at positive G than negative along the vertical axis. You can squeeze the legs to keep blood in the head but you can't squeeze the head to keep blood in the brain veins.

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Nick Parker

@NickParkerPrint

11 days

@Mammoth Nope! They don’t even have any spicy materials in them. At hyperscale they might be cheaper than normal motors. Lithography process, kapton film, little bit of metallization, salty water and common oil.

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Nick Parker

@NickParkerPrint

30 days

@KyleMorgenstein Cornell has a system loosely administered by CS profs but maintained by a rotating crew of freshman/sophomore TAs. Also, exams for those profs have notoriously terrible timeslots and far-flung locations bc they asked to take over exam scheduling from the bursar lol

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Nick Parker

@NickParkerPrint

10 days

@Stefan__Powell I should replay KSP

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Nick Parker

@NickParkerPrint

1 year

@tszzl 65C panels in space will radiate ~750 W/m^2 Solar flux at 1 AU is ~1400 W/m^2, so you have to build a 2:1 ratio of radiator area to panel area to get equilibrium. Not a huge burden unless I messed something up here.

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Nick Parker

@NickParkerPrint

1 year

@MEASURED_HEAD It’s complimentary in zoomer usage. Eg “dad lore” is the realization that most dads had incredible, interesting lives before they were dads

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Nick Parker

@NickParkerPrint

11 days

@samanfarid I assume they have bulletproof IP on it, but their piddly $300K STTR grant ends in January so if you're looking to put some money in they might(?) be receptive? The spin-out startup is

Home | Sangtera

www.sangtera.com

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Nick Parker

@NickParkerPrint

11 days

@zelimir__ Lots of salt! They use LiCl to lower the vapor pressure enough that it’s a nonissue

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Nick Parker

@NickParkerPrint

5 months

@LifeByThunder @TheFineFeminine I mean separate from the race stuff, 8 sons and no daughters is pretty wild

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Nick Parker

@NickParkerPrint

7 years

@andriakbrown @Ah_occ_o @TaritaC @GovHowardDean @elizabethforma @SenWarren @donnabrazile That doesn’t say it takes effect after the primary. You can easily “prepare for the general” before getting the nomination

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Nick Parker

@NickParkerPrint

3 years

I just realized American thermostats have twice as precise control as everyone else's lol Canadian roomie has ours on Celsius and 1 C is a big change!

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Nick Parker

@NickParkerPrint

6 years

@jongeeting @mattyglesias Who the Hell doesn’t want a daycare?? I have one next door and the parade of tots holding onto their little rainbow plush rope walking down the street is the highlight of my morning!

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Nick Parker

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3 years

@DonAeterna @nosilverv Out of context. Previous sentence: “if we cannot make significant progress on racial equity, this country is doomed.”

Fact check: Biden’s comments about ‘doomed’ United States taken out of context

Social media users have been sharing a video clip from a Zoom call where President Joe Biden seems to say that the United States is “doomed” because the country will be “minority white European” by...

www.reuters.com

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Nick Parker

@NickParkerPrint

7 months

@emollick It feels oversold to me. The distribution of value in end uses of this stuff is too wide for full disruption. Tons of quartz is disposable for convenience not strict need, etc. My guess is “the solar panel cost curve hiccups for 2 years, higher value semi barely notices”

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Nick Parker

@NickParkerPrint

6 months

@spoonedher This is quirked up white girl erasure

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Nick Parker

@NickParkerPrint

2 months

@uncle_deluge @PrinceVogel Lol I donate blood religiously because of this logic

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Nick Parker

@NickParkerPrint

3 months

@tylerduran21 @CantEverDie They’ve been using this elsewhere. Maybe Trump couldn’t remember the actual nickname? He’s pretty old…

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Nick Parker

@NickParkerPrint

1 year

@thegarrettscott Are those lenses to project an image onto some sort of skin covering them, or just exposed to the elements? Hard to understand scale from your image but those don’t seem dense enough to look this good otherwise. Area fraction is so low

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Nick Parker

@NickParkerPrint

2 months

@AStratelates You think people would do that? Look at guys like this and lie?

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Nick Parker

@NickParkerPrint

9 months

I recently discovered an incredibly doomed new type of guy

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Nick Parker

@NickParkerPrint

4 years

@AlecStapp To preempt the "but test prep!" responses: "Once scholars control for all these factors as best they can, they find that coaching has a positive but small effect: Perhaps 10 or 20 points in total on the SAT, mostly on the math section"

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Nick Parker

@NickParkerPrint

5 years

@eigenrobot I think this ties into how many Americans self-identify as consumers. $1B is a mind-bogglingly huge amount for consumption It’s a nice chunk of working capital for creation

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Nick Parker

@NickParkerPrint

4 years

I found LIDAR data of Zion National Park online, managed to convert that to Fusion 360 CAM paths for my mill and

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Nick Parker

@NickParkerPrint

2 years

@punished_stu @generalslug Mid is such a useful word in so many contexts but using it for people is brain rot territory

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Nick Parker

@NickParkerPrint

3 years

@sarthakgh If he actually fixes this with a damn thread I feel like that’s a history book moment for tech / corps superseding govs

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Nick Parker

@NickParkerPrint

2 years

Hey do female movie characters with full faces of makeup break immersion for women? I’m loving wheel of time so far but keep noticing Moiraine has fancy eye shadow and stuff while she’s like, trekking thru the woods

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Nick Parker

@NickParkerPrint

7 years

@E3eric4532 @mattyglesias I volunteered. Countless voters said "I want Bernie as president but I'm too scared of trump. Hillary is a safer bet."

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Nick Parker

@NickParkerPrint

1 month

@yishan Buy a pressure swing adsorption air dryer unit and a continuous duty dental air compressor, replace the water-selective zeolite with CO2-getting stuff like 13X and you might have an office friendly setup under $5k.

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Nick Parker

@NickParkerPrint

9 months

@visakanv I think they spent some engineering hours sketching out the concept enough to confidently offer it, as marketing for “we can do your absurd idea if you don’t like ours mr billionaire”

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Nick Parker

@NickParkerPrint

1 year

@igor_kreinin @andrewpprice Honestly that’s a plausible level of craftsmanship for weldments in a high school stadium lol

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Nick Parker

@NickParkerPrint

2 years

@kylebrastrom plastics

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Nick Parker

@NickParkerPrint

1 year

@michael_nielsen The cutting edge fabs are going up eventually. Fast vacuum cycles boost throughput for smaller tools and ez ultra-precision vibration isolation in micro-g lets you shed a ton of complexity Gonna be wild fun figuring it all out

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Nick Parker

@NickParkerPrint

1 year

@TerraformIndies

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Nick Parker

@NickParkerPrint

2 years

@DeveloperHarris Visa from the left and Eigen from the right imo. I know neither are either but their projections into normie-spectrum make them more approachable for those resp. groups

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Nick Parker

@NickParkerPrint

7 years

@mattyglesias Clinton beat Bernie almost entirely on 'electability' and the early delegate count was a big chunk of that perception

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Nick Parker

@NickParkerPrint

6 months

@questionableway Nah, the ideal system is 24/6 with overnight downtime on one weeknight. NYC 24/7 system is a big part of why repairs take a million years and a billion dollars, and upgrades just don’t happen.

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Nick Parker

@NickParkerPrint

11 days

@kylecoolky They aren’t advantageous at that scale as I understand, no. The linear actuation they run on has a fairly low top speed so for small actuators they can do like 400 rpm in the torque config or ~2000 in the speed one. I guess you could stack more for speed and maybe it works? But

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Nick Parker

@NickParkerPrint

3 months

I finally found a paper describing this from 1971 haha Seems like something that should be retried with modern process control! Also wild that they electrodeposit aluminum matrix! Turns out you can totally do it, just not in water baths.

Nick Parker

@NickParkerPrint

11 months

Off the wall rocketry pitch: electrodeposited nickel-copper alloy on woven carbon fiber substrates for absurdly high performance balloon tanks without the temperature limit trades of polymer matrix CF

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Nick Parker

@NickParkerPrint

5 years

@tiffani YC startup advice: *Never* use cumulative metrics! They're the easiest way to lie to yourself! YC D&I: Anyway, here are our cumulative diversity numbers

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Nick Parker

@NickParkerPrint

1 year

I had a call with a defense prime about designing our machine around their union rules and uhhh we're gonna lose to China if we don't fix that shit. I should buy Anduril secondary.

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Nick Parker

@NickParkerPrint

2 years

@waitbutwhy I think this has better odds than it’s usually credited! Binocular vision for predators has re-emerged all over the place on Earth. Bipedal persistence hunting is an ecological niche derived from base physics. Tool use is easy for bipeds

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Nick Parker

@NickParkerPrint

4 years

Quasi-static cavity resonance for wireless power If you build a donut shaped metal room you can do efficient, modestly powerful wireless power transfer throughout the room! Imagine theme park rides full of tiny drones that *never have to land*

Quasistatic Cavity Resonance for Ubiquitous Wireless Power Transfer

Wireless power delivery has the potential to seamlessly power our electrical devices as easily as data is transmitted through the air. However, existing solu...

www.youtube.com

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Nick Parker

@NickParkerPrint

3 years

I’ve been exposed to some delightful new brainworms: Yknow how omicron is milder, more infectious, and branched off OG Covid? Maybe somebody bioengineered it as a self-spreading vax! Choosing to believe this is definitely not true, but it’s a fun conspiracy ngl

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Nick Parker

@NickParkerPrint

4 years

I’m gonna make T-slot extrusion pasta

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Nick Parker

@NickParkerPrint

2 years

I just DIY’d a <$30 sensor that outperforms $1500 industrial versions lmaoooo this should not have worked

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Nick Parker

@NickParkerPrint

11 days

@Ben_Reinhardt RIGHT? I'm still looking for the other shoe. They're contamination sensitive but in an extremely solvable sounding way. They don't describe any long endurance testing in the papers, but they're ~noncontact and I don't see what would go wrong with the water/oil? Magic.

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Nick Parker

@NickParkerPrint

2 years

@patio11 Ancient housing stocks are a big part of it. You’re used to starter homes as “tiny but new” while the norm for US people on Twitter (ie in rich metros) is “decrepit lemon”

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Nick Parker

@NickParkerPrint

7 years

@JaneidyEve @SpaceX Hey you cguys is Cornell the rain 🌧 can we go zach is Xu can y’all do chicken corn 🌽 žyzxcn next xyzzy zwas has corn chicken you can Zhou chicken 🐔 this week or so I just wanted you and your friend and ux I Zuck is your zip XX zxZzxzzxxXxzzxxxxxcxxxxzyicxvźzone come c

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Nick Parker

@NickParkerPrint

11 months

Latest affront to god: My electrodeposition vendor is offering a nickel alloy with 680MPa yield at 350 C What do you mean man that’s basically Inconel. You aren’t supposed to make that from salty water

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Nick Parker

@NickParkerPrint

5 years

@visakanv @joulee This reminds me of a fantastic article I read a while back and then promptly lost to the digital void: They first argued that our genome encodes too much complexity for random mutations to create it over the time complex life has existed if mutations are typically harmful.

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Nick Parker

@NickParkerPrint

7 days

@gdsimms OK sick but also, extremely tiny 360 cam is pretty great in its own right. I wonder how small you could get the necessary MCU and flash memory for that, plus enough lipo for like 5 minutes recording. Ping pong ball 360 cam anyone?

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Nick Parker

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1 year

@tszzl Alternatively if you sling the things a bit further from the sun you can just have panels with chips on the back and the equilibrium temperature will be happy core temperature. Low key advantage for the martians?

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Nick Parker

@NickParkerPrint

4 months

@eshear If you think “sawblades” really hard you can break this one

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Nick Parker

@NickParkerPrint

5 months

This feels bullish for @atomic_semi Direct e-beam litho is maybe a lot more scalable if photonics witchcraft like this can get you massively parallel e-beam sources made on your own process. Bootstrap heaven maybe?

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Nick Parker

@NickParkerPrint

2 years

My friends and I have to work out at least 3x a week and text each other day-of or we pay each other $5 per miss. We’ve all gotten in way better shape, highly recommend. Also hmu if you would like to make this an app before I get around to it. Scalable fitness intervention!

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Nick Parker

@NickParkerPrint

4 months

@BaneOfCovid Heat index is this. It’s the “feels like” temperature and the lethal range is “hottest Fahrenheit you’ve ever seen + 5” aka 140 F ish

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Nick Parker

@NickParkerPrint

11 days

@jwt0625 @Mammoth Hm yeah that sounds much more annoying than the 2021 version. Seems tractable with money to stand up a real process though no?

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Nick Parker

@NickParkerPrint

1 year

@ClickingSeason Trader Joe’s autobiography is hilariously blunt about this. The place started out as a campus liquor store competing on breadth of selection and it’s served over educated yuppies with pretensions of taste ever since

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Nick Parker

@NickParkerPrint

7 years

Unbelievably good article on our current times:

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Nick Parker

@NickParkerPrint

1 month

@docentdemagogue Lol RIP my efforts to do this back in the pandemic. Die swell's got hands :(

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Nick Parker

@NickParkerPrint

11 days

@patbahn @zelimir__ Yes keeping the interconnects below electrolysis voltage is one of the scaling constraints. But in normal use it just contacts polyimide and platinum for the interconnects I think.

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Nick Parker

@NickParkerPrint

7 years

@JaneidyEve @SpaceX I’m on a beach and my phone’s been in my (wet) swimsuit pocket... I think this might just be predictive text and a butt-tweet. Pretty impressed it managed to post honestly, so I’m leaving it up

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Nick Parker

@NickParkerPrint

1 month

@DanielleFong lmaooo "Hey sorry to bother you man but the term sheet says we need to party. See you Friday"

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Nick Parker

@NickParkerPrint

8 months

@richardfuisz What is that "compatible with life" filter doing? What are we supposed to take away from this fact? The claim can't be "every viable phenotype exists, all that's left is selection" because the set of combinations of mutations is like, heat death of the universe Big, right?

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Nick Parker

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9 months

@benkohlmann @mualphaxi @hardaway_cam This is the move - I started Cornell's hyperloop team w/o asking the admins. SpaceX eventually made us get permission from the uni to compete and they tried to say no. I said 'ok but I have a news crew coming next week, what do I tell them?' and had my letter from the dean the

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Nick Parker

@NickParkerPrint

1 year

This is about servo pistons, a new kind of linear actuator with - Better power and torque density than harmonic drives - Integral position- and force- sensing - Dynamic stiffness control - Insane packaging freedom - No tight mechanical tolerances - High efficiency and wear life

Nick Parker

@NickParkerPrint

1 year

I just wrote up one of my old side projects intending to dump it on the web, but in doing so I got re-hyped about it and now I want to keep it to myself until I have time for it again :/

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Nick Parker

@NickParkerPrint

11 days

@mrlowercasea Not good for vehicles but probably robots.

Nick Parker

@NickParkerPrint

11 days

@kylecoolky They aren’t advantageous at that scale as I understand, no. The linear actuation they run on has a fairly low top speed so for small actuators they can do like 400 rpm in the torque config or ~2000 in the speed one. I guess you could stack more for speed and maybe it works? But

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Nick Parker

@NickParkerPrint

11 months

Anyone in SF tonight wanna talk brains and esoteric manufacturing lore over sushi?

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Nick Parker

@NickParkerPrint

11 months

Iterating a bleeding edge design in Ansys has real loot box energy, I just spent like 3 hours messing around Hyped for @afshawnl to put nontrash UX on here

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Nick Parker

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5 years

@visakanv @joulee Then they make this really beautiful argument that the space of possible genomes must be densely packed with manifolds representing different viable phenotypes. IE, evolution couldn't possibly have created us if the space is sparse with viable genomes, ergo it must be dense.

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Nick Parker

@NickParkerPrint

2 years

@visakanv @enjalot EG, when you bought your wifi router it probably advertised that it does both 2.4 GHz and 5 GHz channels. Those waves have periods of 0.4 and 0.2 nanoseconds resp. 2.4 or 5 billion wiggles a second. Of course that's enough to describe a face and a room!

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Nick Parker

@NickParkerPrint

3 years

@liminal_warmth @tszzl Incredible arc if this ends like Emma S

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Nick Parker

@NickParkerPrint

1 year

@tonyaajjackson @thegarrettscott Yeah that’s fair, but this is a concert venue! Surely they want it to look good as you’re entering, when you’re at most a sphere radius from the outer surface?

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Nick Parker

@NickParkerPrint

1 year

Just saw a video about ship-based lasers for air defense and I gotta say, Funniest possible outcome re: Taiwan is China trying a conventional assault, getting absolutely merc’d by unacknowledged space age weapon systems we gave em and then just backing down

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Nick Parker

@NickParkerPrint

5 years

@sbuss @balajis I remember when @balajis was being talked up to run the FDA. Makes you wonder how things might’ve gone if he got that gig

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Nick Parker

@NickParkerPrint

2 years

@tszzl I've always loved the original of this template

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Nick Parker

@NickParkerPrint

6 months

@spoonedher Skill issue, I’ve seen it

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Nick Parker

@NickParkerPrint

3 months

@skooookum

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Nick Parker

@NickParkerPrint

5 years

A SUPER cute Hinge match said “Teach me something about whatever you’re most excited about” and I just went off about orbital retirement homes Wish me luck boys!

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Nick Parker

@NickParkerPrint

8 months

@alextoussss Have you looked into how the laser mosquito defense from that old TED talk worked? My vague recollection is they were somehow acquiring targets with the laser, then watching the beat pattern of the wings to classify mosquito / not mosquito before firing. Maybe your drone needs

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Nick Parker

@NickParkerPrint

8 months

@samswoora Look into self-locking tapers for joining metal parts like tool holders in milling machines. Cones that are very clearly cones can get permanently stuck in holes with a reasonably gentle push in. Nails are even pointier cones than that

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Nick Parker

@NickParkerPrint

4 years

Has anyone built an online Mandarin teaching service explicitly targeting US engineers? Technical vocab, primarily written not spoken. Zero interest in ordering chicken, significant interest in ordering injection molds. Companies would probably love to pay $$$ if it worked.

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Nick Parker

@NickParkerPrint

1 year

California had an almost identical bill several years ago and the author ended up getting indicted for running guns. Turns out the senator just didn’t like competition lmao

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Nick Parker

@NickParkerPrint

4 years

@LongTran02 Money supply hasn’t actually reached consumers because of how stimulus was spent. You want to look for inflation in yachts, art, and value store penthouse real estate

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