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David Andersen

@daveandersen.bsky.social

Computer Science Professor, CMU; co-founder and CTO, Enriched Ag Energy-efficient computing, a dash of security, and a pinch of databases. Also on Mastodon (https://hachyderm.io/@dave_andersen ) signal: dga.48 he/him

1,088 Followers  |  764 Following  |  2,855 Posts  |  Joined: 17.11.2023  |  2.3729

Latest posts by daveandersen.bsky.social on Bluesky

Remember how I said we had plans to try to reduce Amazon wishlist dependence for our whistle printers?

We'd love to get enough polymaker gift cards so we can do a bulk buy directly from the manufacturer and get a stack of filament for an entire urban area.

03.02.2026 21:48 β€” πŸ‘ 226    πŸ” 119    πŸ’¬ 7    πŸ“Œ 4

(and advance congratulations!)

03.02.2026 17:44 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

I think @mekka.mekka-tech.com 's view on this is both wise and better-informed than any I would come up with:
bsky.app/profile/mekk...

03.02.2026 17:44 β€” πŸ‘ 7    πŸ” 2    πŸ’¬ 2    πŸ“Œ 0

Not a good rebrand, the original name was better

03.02.2026 16:34 β€” πŸ‘ 4    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
A pig purse, the body/purse area made of gold chainmail, with solid head and legs/feet.

A pig purse, the body/purse area made of gold chainmail, with solid head and legs/feet.

2024 Tumblr, at that.

the artist also did an 18 karat gold pig purse. :) Shame the Twitter yoinking of it nuked the context that makes it even more interesting.

www.sothebys.com/en/auctions/...

03.02.2026 16:12 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

That's interesting. The answer seems likely to be that you'd like a max-min fair allocation of the negative or low cost energy that fits the distribution constraints but I don't think you can get that from a simple single price.

03.02.2026 03:46 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

My reaction to this was "why do idiots like this agree to be interviewed by him?"
But I realized that in the rank order of
"rehabbing and making a film with a sex pest"; and
"creating a propaganda film for a different sex pest",
that
"being interviewed by Chotiner" is only #3 in stupidity

02.02.2026 18:28 β€” πŸ‘ 21    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

idk y’all i’m starting to think she might not actually be entirely motivated by β€œprotecting women and girls”

01.02.2026 18:07 β€” πŸ‘ 35    πŸ” 14    πŸ’¬ 0    πŸ“Œ 0
A bunch of micro bitonal whistles printing in a bambu 3d printer. The bottom layer is white, the next layer is a thinner layer of blue, and the top surface is pink. The pink layer is still being printed.

A bunch of micro bitonal whistles printing in a bambu 3d printer. The bottom layer is white, the next layer is a thinner layer of blue, and the top surface is pink. The pink layer is still being printed.

Hah. Still printing whistles. Running out of blue at the right time landed me at almost an accidental trans pride flag and now I want to make one on purpose with the full stripe set except that the reason I landed here was .. running out of blue. 🀣 Oh well, I like this set anyway.

01.02.2026 03:35 β€” πŸ‘ 11    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

It's really a shame. Ariely, Gino, Wansink and more - they've all done a lot to change popular perception of things based on πŸ’©.

31.01.2026 14:43 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

shocking that a guy with multiple studies that have been questioned for not having the data they claim to might also have the kind of judgment that leads one to hang out with Epstein _four years_ after his first conviction.

oh wait. no, no it isn't. it's just gross.

31.01.2026 03:07 β€” πŸ‘ 4    πŸ” 1    πŸ’¬ 1    πŸ“Œ 0

I was trying to figure out if I could fit "this machine annoys fascists" on a whistle but the test print failed -- the whistles most of us are printing are tiny. Could probably do it on a larger whistle, though...

31.01.2026 02:41 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

"NYU’s Office of Equal Opportunity opened an investigation into Henderson on Tuesday for harassment in the workplace. The complaint, which alleged that Henderson made repeated sexual remarks toward one of the administrator’s employees, was raised as part of the certificate shooting report."

shocker

30.01.2026 21:31 β€” πŸ‘ 7    πŸ” 2    πŸ’¬ 0    πŸ“Œ 0

The arrests of journalists Don Lemon and Georgia Fort are a test for every MSM member with a platform. If you are not voicing your outrage at this blatant violation of the First Amendment, you are utterly discredited as a journalist.

30.01.2026 16:44 β€” πŸ‘ 24773    πŸ” 8002    πŸ’¬ 448    πŸ“Œ 304

oh goodness that's a fantastic idea. I'd never thought about moving the 12v stuff to USB.

30.01.2026 12:43 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

CRJ stands for Critical Race Justice. Flown only by the wokest of woke airlines. Time to stamp out the scourge of flying to Ithaca.

30.01.2026 02:17 β€” πŸ‘ 7    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

lawyers on quadcopters is an interesting new business idea.

29.01.2026 17:52 β€” πŸ‘ 13    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

I think it was an excellent call for the city to cancel refuse pickup this week and focus on snow removal (and not have trash trucks trying to navigate streets with 4' snow piles lining them), but goodness is that recycling bin going to be full. :-)

28.01.2026 18:59 β€” πŸ‘ 3    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

bro whistles are the NICE option. do you really want to challenge 1,000 nerds with 3D printers to invent something louder and more annoying???

28.01.2026 01:08 β€” πŸ‘ 3757    πŸ” 609    πŸ’¬ 133    πŸ“Œ 121

Oof, I missed the bit about hip replacement. Hope recovery is going well.

Also 🀯 on the bill

27.01.2026 03:39 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Lots of scrambling today by the terrible regime.

I want to argue that our goal should be to get Miller removed, that has to be the focus. Noem, Bovino, etc are all just middle managers. The architect of the terror regime is Miller.

A thread:

bsky.app/profile/simo...

27.01.2026 00:44 β€” πŸ‘ 3174    πŸ” 889    πŸ’¬ 87    πŸ“Œ 50
Preview
β€˜Hacks’ Star Meg Stalter Deletes TikTok After Claiming New U.S. Ownership Is Blocking Videos About ICE; Platform Says Disruption Is Due to Power Outage "Hacks" breakout Meg Stalter has deleted her TikTok account after claiming that the app's new ownership is censoring videos critical of ICE.

Fair. They're claiming it's a data center power problem:
variety.com/2026/digital...

27.01.2026 00:06 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Yet more oligarchical control of mass media in service of a right-wing authoritarian government.

Not words that I expected to say about the US.

26.01.2026 21:45 β€” πŸ‘ 3    πŸ” 1    πŸ’¬ 1    πŸ“Œ 0

Voting NO on the DHS funding bill is the bare minimum.

Backing Kristi Noem’s impeachment is the bare minimum.

Holding law-breaking ICE agents legally accountable is the bare minimum.

ICE is beyond reform. Abolish it.

25.01.2026 21:59 β€” πŸ‘ 41788    πŸ” 10734    πŸ’¬ 739    πŸ“Œ 330
Preview
From the pittsburgh community on Reddit: Shredding down Rialto St Explore this post and more from the pittsburgh community

... someone did it. :) It looks good, too.

www.reddit.com/r/pittsburgh...

r/pittsburgh seems to mostly consist of videos of people skiing and snowboarding around the city today

26.01.2026 00:56 β€” πŸ‘ 6    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0

They went past our house. My kids were delighted. We cheered.

We had something like ten cars drive past our house all day. Best day in 15 years to do something like that.

25.01.2026 22:40 β€” πŸ‘ 11    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Looking forward to someone skiing the Dirty Dozen (downhill version).

25.01.2026 22:19 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

13yo just took a run down a hill(-y street) in our neighborhood on my wife's downhill skis. Not really enough speed to do many turns but looked kinda fun. :-) We didn't feel like walking to Negley though.

25.01.2026 22:15 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Preview
From the pittsburgh community on Reddit: Earning my username. Ski POV down S. Negley Ave Explore this post and more from the pittsburgh community

Someone skied down the hill on Negley, in Pittsburgh.

www.reddit.com/r/pittsburgh...

25.01.2026 19:04 β€” πŸ‘ 25    πŸ” 6    πŸ’¬ 3    πŸ“Œ 6

And it looks like there was a set of tracks already there! awesomeness.

25.01.2026 19:43 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

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