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warble

207 karma · joined November 21, 2010

[ my public key: https://keybase.io/micahstev; my proof: https://keybase.io/micahstev/sigs/Tb4WCgoSgDjpAclCHzI-99-Sd8JWqDciGftSkEO6UwI ]
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warble··on Show HN: I built a hardware processor that runs Python
Wow, these FPGAs are not cheap. Don't they also have a couple of ARM cores attached on the SOC?
warble··on A $20k American-made electric pickup with no paint, no stereo, no screen
Highway speeds are worst case scenario so maybe you're right but I doubt it.

Your charge rate acceptance number is surprising to me, I've never seen anything like this in my years of experience designing EV batteries. Preconditioning helps extreme fast charging but isn't necessary for 1-2 C charges at all unless it's very cold out.

There's some caveats to this depending on the exact chemistry but if anything the newer semi solid state NMC cells are even less dependent on this and can charge down to -20C.

warble··on A $20k American-made electric pickup with no paint, no stereo, no screen
EV battery engineer here. It's not hard. Battery management systems are often over engineered but the state of the art is fairly straightforward and will allow battery packs of sufficient size last 200k miles or more easily.
warble··on FFmpeg School of Assembly Language
You're correct, I don't use SIMD instructions much, but I can, and with a C compiler. So still, not sure the advantage of ASM.
warble··on DigiKey's Tariff Resources
Not true, all my boards have been subject to the tariffs going back to the first Trump administration.
warble··on FFmpeg School of Assembly Language
I highly doubt it's true. I can usually approach the same speed in C if I'm working with a familiar compiler. Sometimes I can do significantly better in assembly but it's rare.

I work on bare metal embedded systems though, so maybe there's some nuance when working with bigger OS libs?

warble··on TikTok goes dark in the US
Which they exert through promotion or demotion of speech. In the end it's still a free speech issue in my mind.
warble··on Gravity is not a force
To mimic the effect of gravity on the surface of the earth you could stand on a platform that is accelerating. As long as that platform is accelerating you will experience something similar to gravity on the surface of the earth.

The relative direction of the acceleration would be "up". This is what she means.

warble··on All the electricity you'll need for 40 years
300k on my Toyota right now. Most modern ICE engines should last 200k with no problems. EVs (other than the battery) should last a million miles. Even the batteries are turning out to last longer than everyone expected, ignoring some notable notable failures.
warble··on Using SQLite as Storage for Web Server Static Content
All of this is easily done on a filesystem too. I would assume this is a performance tradeoff rather than features?
warble··on Syncthing Android App Discontinued
It works, and well, considering the constraints in iOS, but doesn't compare well with Androids version. Regular sync thing on Mac is awesome.
warble··on Syncthing Android App Discontinued
This one is way more battery conscious as well. Works great, I prefer it.
warble··on Openpilot – Operating system for robotics
Maybe I'm being ignorant about something here but isn't paying less attention the whole point?
warble··on FCC seek comments on NextNav petition for rulemaking on lower 900MHz ISM band
From Wikipedia: https://en.m.wikipedia.org/wiki/NextNav

On March 11, 2024, NextNav announced it signed an agreement to acquire spectrum licenses covering an additional 4 MHz in the lower 900 MHz band (902-928) from Telesaurus Holdings GB LLC, and Skybridge Spectrum Foundation. NextNav acquired the additional spectrum licenses for a total purchase price of up to $50 million, paid for through a combination of cash and NextNav common stock. The acquired licenses are in the same lower 900 MHz band as NextNav's current licensed spectrum. On April 16, 2024, NextNav filed a rulemaking petition with the Federal Communications Commission to deliver a spectrum solution in the Lower 900 MHz band to facilitate a terrestrial positioning, navigation, and timing network (as a complement and backup to GPS) and broadband.

warble··on Google Meet rolls out multi-device adaptive audio merging
No, probably not there are no phase issues if you just don't transmit the signal. The hard part would be to determine who's in the room, and then who's talking and then mixing appropriately to eliminate feedback and optimize speaker sound quality. None of which requires signal phase accurate synchronicity.

If they're actually able to "sync" (again a poorly defined term) given the problems associated with network latency and different hardware it would border on magic.

warble··on Google Meet rolls out multi-device adaptive audio merging
I think this is much simpler than what you're suggesting. Careful microphone level management can handle this. No need for audio sync. I know they use the word "sync" but that's a very broad term.
warble··on We're ending our Samsung collaboration
I have the 10 pro and although the camera is definitely an improvement over the 5 I used to own, the overall performance is about the same. I still have my 5, and use it a lot for POS stuff and it's great still. I even have a OnePlus 1 around and it still works decently although it struggles a little with some apps. That's a TEN year old phone.
warble··on New gel breaks down alcohol in the body
Confirmed. Zbiotics works great. It's a very noticeable difference.
warble··on AM radio law opposed by tech and auto industries is close to passing
I feel like it's a worse UI and worse experience. By leaps and bounds. Less reliable, harder to operate, over reliant on terrible software and underpowered hardware. Some of the android auto and apple car play stuff is acceptable, but not great.
warble··on Updating California's grid for EVs may cost up to $20B
I live in California and only pay 0.10-0.12 a kWh.
warble··on Making old orchards new again
I only have experience with citrus, but as far as I know you can graft forever. Some variants don't have seeds, this is the only way to propagate them.
warble··on How a Solar Revolution in Farming Is Depleting Groundwater
Cheaper to run constantly.
warble··on The EPA is proposing that 'forever chemicals' be considered hazardous substances
After reading this it's still not clear there's a problem.
warble··on Ask HN: How do you document your hardware projects?
Kicad stores as XML as you probably know and is fairly human readable, so I use git on the project folder directly. Works great, although manual merges are a little involved, but I'm never in that position.

Also a lot of notes in the schematics/layout as well, utilizing layers. Overall I'm pretty satisfied.

warble··on Telecom Industry Is Mad Because the FCC Might Examine High Broadband Prices
I don't see any free markets?
warble··on Pope tempted by Python. Signs off on coding scheme for kids
Depends on the exception. Maybe the sun wasn't moral.
warble··on Toyota’s advanced battery technology roadmap
Not to mention that this kind of range isn't helpful, it would be much more useful to make the battery smaller and lighter and stay with a 300 mile range. The vehicle would be cheaper and much more efficient overall. This is the kind of headline a marketing department would write.
warble··on How LSP could have been better
What the hell is LSP?
warble··on Ubiquitous superconducting diode effect in superconductor thin films
Wow, getting an ideal diode in the real world would be huge for power conversion efficiency and cost. Currently you can get close with a semiconductor switch but there are still inefficiencies.
warble··on Tell HN: I think I found Toyota's battery
Yes this is the real win. Lighter smaller batteries. Better efficiency and easier to design around for safety and maintenance.
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