Saturday, April 29, 2023

New best story on Hacker News: Scrcpy: Display and control your Android devices connected over USB or TCP/IP

Scrcpy: Display and control your Android devices connected over USB or TCP/IP
591 by thunderbong | 125 comments on Hacker News.


New best story on Hacker News: Tell HN: Cloudflare verification is breaking the internet

Tell HN: Cloudflare verification is breaking the internet
556 by statquontrarian | 309 comments on Hacker News.
Across many different pages including science journals, ChatGPT, and many others, CloudFlare verification goes into an infinite loop of: 1. "Verify you are a human" 2. Check the box or perform some other type of rain dance 3. "Please stand by, while we are checking your browser..." 4. Repeat step 1 I'm on Fedora Linux 37 using Firefox 110. The workaround is to use Chrome. After experiencing this dozens of times and getting annoyed of needing to use Chrome, I finally went and deleted all my cookies and cache which I had been dreading to do. It did not help. I don't have a CloudFlare account so I wrote up a detailed post on their community forums. I offered a HAR file and was willing to do diagnostics. It received no responses and it was auto-closed. It's unacceptable that CloudFlare is breaking the internet while offering no community support. Edit: I'm in Texas. I'm not using a VPN or Tor, just AT&T Fiber. I don't have ad-blockers. No weird extensions. Nothing special (besides being on Linux). Edit2: Since this got traction, I opened a new community post: https://ift.tt/2zp8k1l To be clear, I'm not against CloudFlare doing DDoS protection, etc., but it can't be breaking the internet while ignoring community posts on it . Edit3: The CloudFlare team has engaged. Thank you HN!

New best story on Hacker News: Tell HN: Cloudflare verification is breaking the internet

Tell HN: Cloudflare verification is breaking the internet
556 by statquontrarian | 309 comments on Hacker News.
Across many different pages including science journals, ChatGPT, and many others, CloudFlare verification goes into an infinite loop of: 1. "Verify you are a human" 2. Check the box or perform some other type of rain dance 3. "Please stand by, while we are checking your browser..." 4. Repeat step 1 I'm on Fedora Linux 37 using Firefox 110. The workaround is to use Chrome. After experiencing this dozens of times and getting annoyed of needing to use Chrome, I finally went and deleted all my cookies and cache which I had been dreading to do. It did not help. I don't have a CloudFlare account so I wrote up a detailed post on their community forums. I offered a HAR file and was willing to do diagnostics. It received no responses and it was auto-closed. It's unacceptable that CloudFlare is breaking the internet while offering no community support. Edit: I'm in Texas. I'm not using a VPN or Tor, just AT&T Fiber. I don't have ad-blockers. No weird extensions. Nothing special (besides being on Linux). Edit2: Since this got traction, I opened a new community post: https://ift.tt/2zp8k1l To be clear, I'm not against CloudFlare doing DDoS protection, etc., but it can't be breaking the internet while ignoring community posts on it . Edit3: The CloudFlare team has engaged. Thank you HN!

New best story on Hacker News: Colorado governor signs tractor right-to-repair law opposed by John Deere

Colorado governor signs tractor right-to-repair law opposed by John Deere
609 by FridayoLeary | 188 comments on Hacker News.


New best story on Hacker News: Check if your IKEA chair is compatible with your screen

Check if your IKEA chair is compatible with your screen
622 by ruph123 | 206 comments on Hacker News.


New best story on Hacker News: Check if your IKEA chair is compatible with your screen

Check if your IKEA chair is compatible with your screen
622 by ruph123 | 206 comments on Hacker News.


New top story on Hacker News: Encrypted DMs and other DM upgrades rolling out this week

Encrypted DMs and other DM upgrades rolling out this week
19 by mvdwoord | 12 comments on Hacker News.


Wednesday, April 26, 2023

New best story on Hacker News: Linen.dev: A 500 kb Slack alternative

Linen.dev: A 500 kb Slack alternative
397 by cheeseblubber | 133 comments on Hacker News.


New best story on Hacker News: Show HN: Homemade rocketship treehouse – hardware to custom OS

Show HN: Homemade rocketship treehouse – hardware to custom OS
386 by david_elson | 48 comments on Hacker News.
(This was previously submitted as https://ift.tt/9bu0rMK ) The Ravenna Ultra-Low-Altitude Vehicle is a backyard rocketship treehouse nestled in the Seattle neighborhood of Ravenna. Click the link to see a demo video ( http://rocket.jonh.net ). The hexagonal treehouse is about 6.5 feet (2 meters) across at its widest point. The frame is welded mild steel with riveted aluminum siding. It contains nearly 800 LEDs forming dozens of numeric displays spread across 14 control panels, each with an acrylic face laser-cut and etched with labels such as "Lunar Distance" and "Hydraulic Pressure". The pilot controls the rocket using a joystick and panels full of working switches, knobs and buttons. Underneath the capsule are three "thrusters" that shoot plumes of water and compressed air under the control of the pilot's joystick, simulating real positioning thrusters. Takeoff and docking sequences are augmented by a paint-shaker that simulates the vibration of a rocket engine. Sound effects complete the illusion, with a powered subwoofer that gives the rocket a satisfying rumble. When it was built in 2011, rocket operations were controlled by three Atmega328 microprocessors on custom-fabricated printed circuit boards, running a small operating system, RULOS, built just for this project. A trench running from the house to the rocket carries 12VDC power for the lighting and electronics, water for the thrusters, compressed air, and several data signals. Since 2011, the two-person team has upgraded it, here is a recent update from the makers: One of the most visible changes is replacing the primary 4-line display with a slicker 6-line display (i.e., 6 rows of 8 columns of 7-segment LEDs). The audio synthesizer has been upgraded to a PCB that can generate 50khz, 16-bit audio. The interconnection bus, which had been flat IDC cable carrying individual on/off lines, was upgraded to a true I2C-based networked distributed system with over a dozen individually addressable targets, all interconnected by standard cat5 cable that carries both our I2C protocol and power. We also moved much of the electronics from 8-bit atmega328s to newer, 32-bit STM32F3's. RULOS has been expanded into a pretty general purpose embedded systems platform ported to 5 major lines of CPU (atmega, attiny, stm32, nxp lpc, and esp32). We've used it for dozens of other projects in the last 12 years, including a nanosecond-accurate timestamper, a GPS datalogger, an air quality sensor, various little electronic control boards for toys (e.g. these, and this), and an autonomous boat (that sank). It is all available on Github: https://ift.tt/ZFtmN2W .

New best story on Hacker News: Show HN: Homemade rocketship treehouse – hardware to custom OS

Show HN: Homemade rocketship treehouse – hardware to custom OS
385 by david_elson | 48 comments on Hacker News.
(This was previously submitted as https://ift.tt/9bu0rMK ) The Ravenna Ultra-Low-Altitude Vehicle is a backyard rocketship treehouse nestled in the Seattle neighborhood of Ravenna. Click the link to see a demo video ( http://rocket.jonh.net ). The hexagonal treehouse is about 6.5 feet (2 meters) across at its widest point. The frame is welded mild steel with riveted aluminum siding. It contains nearly 800 LEDs forming dozens of numeric displays spread across 14 control panels, each with an acrylic face laser-cut and etched with labels such as "Lunar Distance" and "Hydraulic Pressure". The pilot controls the rocket using a joystick and panels full of working switches, knobs and buttons. Underneath the capsule are three "thrusters" that shoot plumes of water and compressed air under the control of the pilot's joystick, simulating real positioning thrusters. Takeoff and docking sequences are augmented by a paint-shaker that simulates the vibration of a rocket engine. Sound effects complete the illusion, with a powered subwoofer that gives the rocket a satisfying rumble. When it was built in 2011, rocket operations were controlled by three Atmega328 microprocessors on custom-fabricated printed circuit boards, running a small operating system, RULOS, built just for this project. A trench running from the house to the rocket carries 12VDC power for the lighting and electronics, water for the thrusters, compressed air, and several data signals. Since 2011, the two-person team has upgraded it, here is a recent update from the makers: One of the most visible changes is replacing the primary 4-line display with a slicker 6-line display (i.e., 6 rows of 8 columns of 7-segment LEDs). The audio synthesizer has been upgraded to a PCB that can generate 50khz, 16-bit audio. The interconnection bus, which had been flat IDC cable carrying individual on/off lines, was upgraded to a true I2C-based networked distributed system with over a dozen individually addressable targets, all interconnected by standard cat5 cable that carries both our I2C protocol and power. We also moved much of the electronics from 8-bit atmega328s to newer, 32-bit STM32F3's. RULOS has been expanded into a pretty general purpose embedded systems platform ported to 5 major lines of CPU (atmega, attiny, stm32, nxp lpc, and esp32). We've used it for dozens of other projects in the last 12 years, including a nanosecond-accurate timestamper, a GPS datalogger, an air quality sensor, various little electronic control boards for toys (e.g. these, and this), and an autonomous boat (that sank). It is all available on Github: https://ift.tt/ZFtmN2W .

New best story on Hacker News: Netflix loses 1M users in Spain over password policing

Netflix loses 1M users in Spain over password policing
500 by FabHK | 649 comments on Hacker News.


New best story on Hacker News: Netflix loses 1M users in Spain over password policing

Netflix loses 1M users in Spain over password policing
481 by FabHK | 628 comments on Hacker News.


New best story on Hacker News: Transformers from Scratch

Transformers from Scratch
475 by jasim | 35 comments on Hacker News.


Tuesday, April 25, 2023

New best story on Hacker News: YouTube, the jewel of the internet

YouTube, the jewel of the internet
461 by gumby | 459 comments on Hacker News.


New best story on Hacker News: Lego breaks ground on first US manufacturing facility

Lego breaks ground on first US manufacturing facility
427 by thunderbong | 291 comments on Hacker News.


New best story on Hacker News: Lego breaks ground on first US manufacturing facility

Lego breaks ground on first US manufacturing facility
427 by thunderbong | 291 comments on Hacker News.


New best story on Hacker News: Smartphones with Qualcomm chip secretly send personal data to Qualcomm

Smartphones with Qualcomm chip secretly send personal data to Qualcomm
606 by h1x | 175 comments on Hacker News.


New top story on Hacker News: Could we stop Yellowstone from erupting with a giant geothermal power plant?

Could we stop Yellowstone from erupting with a giant geothermal power plant?
64 by tim_sw | 31 comments on Hacker News.


New best story on Hacker News: Smartphones with Qualcomm chip secretly send personal data to Qualcomm

Smartphones with Qualcomm chip secretly send personal data to Qualcomm
540 by h1x | 156 comments on Hacker News.


New best story on Hacker News: Ways to shoot yourself in the foot with PostgreSQL

Ways to shoot yourself in the foot with PostgreSQL
524 by philbo | 177 comments on Hacker News.


New best story on Hacker News: Ways to shoot yourself in the foot with PostgreSQL

Ways to shoot yourself in the foot with PostgreSQL
499 by philbo | 167 comments on Hacker News.


Saturday, April 22, 2023

New best story on Hacker News: Tell HN: Eid Mubarak

Tell HN: Eid Mubarak
766 by asim | 314 comments on Hacker News.
To the Muslims on HN, Eid Mubarak! And to everyone else, Eid Mubarak! For those who don't know. Eid is a day of celebration after the month of Ramadan, in which Muslims fasted for 30 days from sunrise to sunset with no food or water. It's something 2B people around the world celebrate to today or tomorrow (moon sighting permitted). A note on Ramadan. To those interested in intermittent fasting, longevity, and coming back to a more human experience not drowning in technology, food and consumerism I would say check it out! After over 20 years of doing it I'm still learning something new every year, or I should say, unlearning bad habits we've created for ourselves as a society through abundance. Hope you all have a great day!

New best story on Hacker News: Tell HN: Eid Mubarak

Tell HN: Eid Mubarak
765 by asim | 313 comments on Hacker News.
To the Muslims on HN, Eid Mubarak! And to everyone else, Eid Mubarak! For those who don't know. Eid is a day of celebration after the month of Ramadan, in which Muslims fasted for 30 days from sunrise to sunset with no food or water. It's something 2B people around the world celebrate to today or tomorrow (moon sighting permitted). A note on Ramadan. To those interested in intermittent fasting, longevity, and coming back to a more human experience not drowning in technology, food and consumerism I would say check it out! After over 20 years of doing it I'm still learning something new every year, or I should say, unlearning bad habits we've created for ourselves as a society through abundance. Hope you all have a great day!

New top story on Hacker News: Design quirks, limited parts, and other ways Chromebooks frustrate repairs

Design quirks, limited parts, and other ways Chromebooks frustrate repairs
46 by PaulHoule | 41 comments on Hacker News.


New top story on Hacker News: Researchers Taught Parrots to Video Call Other Parrots

Researchers Taught Parrots to Video Call Other Parrots
15 by tosh | 2 comments on Hacker News.


New top story on Hacker News: Navigating the world when your senses conjure up phenomena others can’t perceive

Navigating the world when your senses conjure up phenomena others can’t perceive
6 by Caiero | 0 comments on Hacker News.


Thursday, April 20, 2023

New top story on Hacker News: Kootenay Barter – Banking on Each Other

Kootenay Barter – Banking on Each Other
5 by walterbell | 0 comments on Hacker News.


New best story on Hacker News: Shutting down my legal torrent site after 17 years

Shutting down my legal torrent site after 17 years
632 by en3r0 | 319 comments on Hacker News.
I ran Legit Torrents for ~17 years and shut it down recently. The homepage is now a nostalgic look back at that time.

New best story on Hacker News: Shutting down my legal torrent site after 17 years

Shutting down my legal torrent site after 17 years
630 by en3r0 | 308 comments on Hacker News.
I ran Legit Torrents for ~17 years and shut it down recently. The homepage is now a nostalgic look back at that time.

New best story on Hacker News: Space Elevator

Space Elevator
702 by nivethan | 117 comments on Hacker News.


New best story on Hacker News: Why do ships use “port” and “starboard” instead of “left” and “right?”

Why do ships use “port” and “starboard” instead of “left” and “right?”
619 by snitzr | 601 comments on Hacker News.


New top story on Hacker News: Remembering Virginia Norwood, the ‘Mother’ of NASA’s Landsat Program

Remembering Virginia Norwood, the ‘Mother’ of NASA’s Landsat Program
7 by isaacfrond | 0 comments on Hacker News.


Monday, April 17, 2023

New best story on Hacker News: RedPajama: Reproduction of Llama with Friendly License

RedPajama: Reproduction of Llama with Friendly License
479 by tim_sw | 121 comments on Hacker News.


New best story on Hacker News: Why does a plastic-wrapped turkey sandwich cost $15 at the NYC airport?

Why does a plastic-wrapped turkey sandwich cost $15 at the NYC airport?
647 by raybb | 591 comments on Hacker News.


New best story on Hacker News: Valve Restricts Accounts of 2500 Users Who Marked a Negative Game Review Useful

Valve Restricts Accounts of 2500 Users Who Marked a Negative Game Review Useful
652 by rurban | 367 comments on Hacker News.


New best story on Hacker News: Valve Restricts Accounts of 2500 Users Who Marked a Negative Game Review Useful

Valve Restricts Accounts of 2500 Users Who Marked a Negative Game Review Useful
651 by rurban | 367 comments on Hacker News.


New best story on Hacker News: De-Stressing Booking.com

De-Stressing Booking.com
785 by robin_reala | 301 comments on Hacker News.


New best story on Hacker News: De-Stressing Booking.com

De-Stressing Booking.com
779 by robin_reala | 298 comments on Hacker News.


Friday, April 14, 2023

New best story on Hacker News: The early days of Linux

The early days of Linux
764 by Paul-Craft | 147 comments on Hacker News.


New best story on Hacker News: The early days of Linux

The early days of Linux
743 by Paul-Craft | 143 comments on Hacker News.


New top story on Hacker News: Alien motherships: Pentagon official floats a theory for unexplained sightings

Alien motherships: Pentagon official floats a theory for unexplained sightings
15 by madspindel | 10 comments on Hacker News.


New top story on Hacker News: Virginia Norwood, ‘Mother’ of Satellite Imaging Systems, Dies at 96

Virginia Norwood, ‘Mother’ of Satellite Imaging Systems, Dies at 96
12 by Amorymeltzer | 1 comments on Hacker News.


New best story on Hacker News: Animated Drawings

Animated Drawings
737 by jonbaer | 66 comments on Hacker News.


New best story on Hacker News: Animated Drawings

Animated Drawings
726 by jonbaer | 63 comments on Hacker News.


Wednesday, April 12, 2023

New best story on Hacker News: Show HN: GPT-4-powered web searches for developers

Show HN: GPT-4-powered web searches for developers
613 by rushingcreek | 242 comments on Hacker News.
Hi HN, Today we’re launching GPT-4 answers on Phind.com, a developer-focused search engine that uses generative AI to browse the web and answer technical questions, complete with code examples and detailed explanations. Unlike vanilla GPT-4, Phind feeds in relevant websites and technical documentation, reducing the model’s hallucination and keeping it up-to-date. To use it, simply enable the “Expert” toggle before doing a search. GPT-4 is making a night-and-day difference in terms of answer quality. For a question like “How can I RLHF a LLaMa model”, Phind in Expert mode delivers a step-by-step guide complete with citations ( https://ift.tt/38Dd9rq... ) while Phind in default mode meanders a bit and answers the question very generally ( https://ift.tt/iSXfzWo... ). GPT-4 is significantly more concise and “systematic” in its answers than our default model. It generates step-by-step instructions over 90% of the time, while our default model does not. We’re particularly focused on ML developers, as Phind can answer questions about many recent ML libraries, papers, and technologies that ChatGPT simply cannot. Even with ChatGPT’s alpha browsing mode, Phind answers technical questions faster and in more detail. For example, Phind running on “Expert” GPT-4 mode can concisely and correctly tell you how to run an Alpaca model using llama.cpp: ( https://ift.tt/t87siFM... ). In contrast, ChatGPT-4 hallucinates and writes a make function for a fictional llama.cpp. We still have a long way to go and would love to hear your feedback.

New best story on Hacker News: Show HN: GPT-4-powered web searches for developers

Show HN: GPT-4-powered web searches for developers
591 by rushingcreek | 234 comments on Hacker News.
Hi HN, Today we’re launching GPT-4 answers on Phind.com, a developer-focused search engine that uses generative AI to browse the web and answer technical questions, complete with code examples and detailed explanations. Unlike vanilla GPT-4, Phind feeds in relevant websites and technical documentation, reducing the model’s hallucination and keeping it up-to-date. To use it, simply enable the “Expert” toggle before doing a search. GPT-4 is making a night-and-day difference in terms of answer quality. For a question like “How can I RLHF a LLaMa model”, Phind in Expert mode delivers a step-by-step guide complete with citations ( https://ift.tt/38Dd9rq... ) while Phind in default mode meanders a bit and answers the question very generally ( https://ift.tt/iSXfzWo... ). GPT-4 is significantly more concise and “systematic” in its answers than our default model. It generates step-by-step instructions over 90% of the time, while our default model does not. We’re particularly focused on ML developers, as Phind can answer questions about many recent ML libraries, papers, and technologies that ChatGPT simply cannot. Even with ChatGPT’s alpha browsing mode, Phind answers technical questions faster and in more detail. For example, Phind running on “Expert” GPT-4 mode can concisely and correctly tell you how to run an Alpaca model using llama.cpp: ( https://ift.tt/t87siFM... ). In contrast, ChatGPT-4 hallucinates and writes a make function for a fictional llama.cpp. We still have a long way to go and would love to hear your feedback.

New best story on Hacker News: Semaphore: A Full-Body Keyboard

Semaphore: A Full-Body Keyboard
579 by kieto | 96 comments on Hacker News.


New best story on Hacker News: Deck.of.cards

Deck.of.cards
525 by edent | 69 comments on Hacker News.


New best story on Hacker News: Deck.of.cards

Deck.of.cards
497 by edent | 65 comments on Hacker News.


New best story on Hacker News: SQL Maxis: Why We Ditched RabbitMQ and Replaced It with a Postgres Queue

SQL Maxis: Why We Ditched RabbitMQ and Replaced It with a Postgres Queue
500 by ctc24 | 294 comments on Hacker News.


Monday, April 10, 2023

New best story on Hacker News: Effective Spaced Repetition

Effective Spaced Repetition
444 by g0xA52A2A | 215 comments on Hacker News.


New best story on Hacker News: Effective Spaced Repetition

Effective Spaced Repetition
440 by g0xA52A2A | 215 comments on Hacker News.


New best story on Hacker News: EY gets banned from new audit business in Germany

EY gets banned from new audit business in Germany
456 by mfiguiere | 278 comments on Hacker News.


New best story on Hacker News: From deep to long learning?

From deep to long learning?
473 by headalgorithm | 105 comments on Hacker News.


New best story on Hacker News: EY gets banned from new audit business in Germany

EY gets banned from new audit business in Germany
455 by mfiguiere | 278 comments on Hacker News.


New best story on Hacker News: Microsoft fixes 5-year-old Defender bug, reducing Firefox-related CPU use by 75%

Microsoft fixes 5-year-old Defender bug, reducing Firefox-related CPU use by 75%
519 by ylere | 182 comments on Hacker News.


New best story on Hacker News: Ever-expanding animation of the life of the 796th floor of a space station

Ever-expanding animation of the life of the 796th floor of a space station
494 by justsomehnguy | 52 comments on Hacker News.


New best story on Hacker News: Ever-expanding animation of the life of the 796th floor of a space station

Ever-expanding animation of the life of the 796th floor of a space station
460 by justsomehnguy | 48 comments on Hacker News.


New top story on Hacker News: The Tyranny of Science over Mothers

The Tyranny of Science over Mothers
25 by the-mitr | 4 comments on Hacker News.


Sunday, April 9, 2023

New best story on Hacker News: The LLama Effect: Leak Sparked a Series of Open Source Alternatives to ChatGPT

The LLama Effect: Leak Sparked a Series of Open Source Alternatives to ChatGPT
442 by gardenfelder | 269 comments on Hacker News.


New best story on Hacker News: The LLama Effect: Leak Sparked a Series of Open Source Alternatives to ChatGPT

The LLama Effect: Leak Sparked a Series of Open Source Alternatives to ChatGPT
425 by gardenfelder | 257 comments on Hacker News.


New best story on Hacker News: System design and the cost of architectural complexity (2013)

System design and the cost of architectural complexity (2013)
455 by damethos | 164 comments on Hacker News.


New best story on Hacker News: System design and the cost of architectural complexity (2013)

System design and the cost of architectural complexity (2013)
454 by damethos | 164 comments on Hacker News.


New top story on Hacker News: Women now dominate the book business. Why not other creative industries?

Women now dominate the book business. Why not other creative industries?
9 by atlasunshrugged | 0 comments on Hacker News.


New best story on Hacker News: New Orleans teenagers found a new proof of the Pythagorean Theorem

New Orleans teenagers found a new proof of the Pythagorean Theorem
648 by malshe | 159 comments on Hacker News.


New best story on Hacker News: New Orleans teenagers found a new proof of the Pythagorean Theorem

New Orleans teenagers found a new proof of the Pythagorean Theorem
629 by malshe | 156 comments on Hacker News.


Friday, April 7, 2023

New best story on Hacker News: Ask Wirecutter: Can you recommend a not-smart TV for me?

Ask Wirecutter: Can you recommend a not-smart TV for me?
602 by deeg | 723 comments on Hacker News.


New best story on Hacker News: Ask Wirecutter: Can you recommend a not-smart TV for me?

Ask Wirecutter: Can you recommend a not-smart TV for me?
596 by deeg | 705 comments on Hacker News.


New best story on Hacker News: Building GitHub with Ruby on Rails

Building GitHub with Ruby on Rails
591 by Lukas_Skywalker | 276 comments on Hacker News.


New best story on Hacker News: Building GitHub with Ruby on Rails

Building GitHub with Ruby on Rails
583 by Lukas_Skywalker | 272 comments on Hacker News.


New best story on Hacker News: Grid World

Grid World
604 by tobr | 89 comments on Hacker News.


New best story on Hacker News: Grid World

Grid World
604 by tobr | 89 comments on Hacker News.


Wednesday, April 5, 2023

New best story on Hacker News: Supercentenarian records show patterns indicative of errors and pension fraud (2020)

Supercentenarian records show patterns indicative of errors and pension fraud (2020)
441 by bookofjoe | 259 comments on Hacker News.


New best story on Hacker News: How to do hard things

How to do hard things
429 by tacon | 147 comments on Hacker News.


New best story on Hacker News: Deep Learning Foundations to Stable Diffusion

Deep Learning Foundations to Stable Diffusion
536 by noob_eng | 100 comments on Hacker News.


New best story on Hacker News: Bob Lee, former CTO of Square, has died after being stabbed in San Francisco

Bob Lee, former CTO of Square, has died after being stabbed in San Francisco
525 by rdl | 558 comments on Hacker News.


New top story on Hacker News: Is RAM wiped before use in another LXC container?

Is RAM wiped before use in another LXC container?
4 by Aachen | 1 comments on Hacker News.


New best story on Hacker News: Creator of Catan, Klaus Teuber, has died

Creator of Catan, Klaus Teuber, has died
506 by miiiiiike | 120 comments on Hacker News.


New best story on Hacker News: Creator of Catan, Klaus Teuber, has died

Creator of Catan, Klaus Teuber, has died
501 by miiiiiike | 120 comments on Hacker News.


Tuesday, April 4, 2023

New top story on Hacker News: Physical 3x3x3x3 hypercube and other physical 4d twisty puzzles

Physical 3x3x3x3 hypercube and other physical 4d twisty puzzles
5 by amichail | 1 comments on Hacker News.


New best story on Hacker News: How to be a -10x Engineer

How to be a -10x Engineer
529 by surprisetalk | 344 comments on Hacker News.


New best story on Hacker News: How to be a -10x Engineer

How to be a -10x Engineer
495 by surprisetalk | 322 comments on Hacker News.


New top story on Hacker News: Show HN: Promptr, let GPT operate on your codebase and other useful goodies

Show HN: Promptr, let GPT operate on your codebase and other useful goodies
27 by deathmonger5000 | 7 comments on Hacker News.
Hi HN, I've been working on an experimental tool that helps you use GPT to work on your codebase. I'd love to improve the tool if there's interest. New ideas welcome! I think this could also be useful for experimenting with other types of recursive prompts. It’s a little bit Swiss Army knife and a little bit skynet: https://ift.tt/amMUKAP From the README: Promptr is a CLI tool for operating on your codebase using GPT. Promptr dynamically includes one or more files into your GPT prompts, and it can optionally parse and apply the changes that GPT suggests to your codebase. Several prompt templates are included for various purposes, and users can create their own templates.

New best story on Hacker News: Launch HN: OutSail (YC W23) – Wingsails to reduce cargo ship fuel consumption

Launch HN: OutSail (YC W23) – Wingsails to reduce cargo ship fuel consumption
454 by jmoorebeek | 215 comments on Hacker News.
Hi HN! I’m Joseph, and along with Arpan and Bailey we are the founders of OutSail Shipping ( https://ift.tt/zF8va17 ). We’re building a sail the size of a 747 that rolls up into a shipping container. When deployed, it will generate thrust from the wind to reduce the fuel consumption of a cargo ship. An array of these devices will reduce fuel consumption on ships by up to 20%. These sails are easily stowed and removed to cause no interference with cargo operations. Here’s a short video showing our prototype: https://www.youtube.com/watch?v=VUpVqzpym54 . Sails powered ships for millennia; but then the convenience of energy-dense fuels displaced sails. As ship speeds eventually exceeded wind speeds, the consensus became that sails had no place in shipping and were relegated to hobbyists and sport. Fast forward a century and a half, and maritime shipping, like all other industries, is facing a reckoning to mitigate the greenhouse gasses produced by their activities. The International Maritime Organization (IMO) has introduced new regulations which use a vessel’s Carbon Intensity Indicator (CII) to grade ships. This grading scale becomes more aggressive over time, and any ship with a poor grade must take corrective action. The corrective actions can be as non-invasive as reducing speed (aka: slow steaming) or as extreme as a retrofit to use a different, cleaner fuel source. This costs millions and takes a ship out of commission for months, and it’s difficult to ensure your (now more expensive) fuel is available at every port of call. Ship owners are hedging their bets that slow steaming will dominate their future, with ship order books full to reflect the increased capacity needed when containers take 20% longer to cross the ocean. Or option three. There is sufficient wind on the ocean to power the entire shipping industry, if you’re willing to grab it. Wind Assisted Ship Propulsion (WASP) devices can be used as a corrective action to improve a vessel’s CII rating, without reducing ship speed or changing the route. In other words, a return of sails. We are hardware engineers with over two decades of experience between us, working at Tesla, SpaceX, JPL, Relativity, and some startups. The idea for OutSail came from Arpan and Joseph getting coffee after work one day. When we asked each other “What would you do if you weren’t building satellites?” maritime cargo came up from both sides; Arpan from having studied the industry for opportunities to reduce emissions, and Joseph from a love of hydrodynamics and maybe too many sea-shanties. Bailey and Arpan, meanwhile, had been looking at working on bicycling infrastructure. What brought the three of us together was actually a Dungeons & Dragons game where we realized we made a good team! We settled on OutSail as a good fit for our hardware hacking mentality, trading in our druids staffs for spanners. Aerodynamically, sails are simply vertical wings. Wind blowing across the vessel causes the sail to generate lift and drag, and the resultant vector has some forward component to pull the ship through the water. However, if the wind comes from an angle too close to the direction of travel, there is no thrust. As an added complication, the sail only sees the relative wind. If the ship travels faster, the wind will appear to come from closer and closer to the direction of travel, even if the true wind is coming from perpendicular to your course! Despite this, standard sails can still produce forward thrust as long as the wind is at least 20 degrees off from directly in front of the vessel. This is how our sails can still save power, even on a fast moving vessel. There are many sail technologies out there. A common question we get asked is “Are you going to use flettner rotors/suction airfoils?”. Both of these technologies use power supplied by the ship to increase the lift produced by a surface; rotor-sails spin, and suction airfoils…suck? Each of these have a place, especially at low vessel speeds. But our customers ask us for a solution that works for container ships cruising at the relatively high speed of 22kt. At these speeds, the relative wind is almost always ahead of you, so lift/drag becomes more important. Powered sails suffer from poor lift/drag, both from the high induced drag from very high lift coefficients, and system losses from drawing on ship’s power. So no we are not going with flettner rotors/suction airfoils. While they are the new exciting technology on the block, if you factor in their power usage and high drag ratio, they are just not as practical as a simple sail. So now that we’ve given a general summary of sailing, it’s time to explain how a 747 wing will ever fit inside a 9ft tall cargo container. It’s simple really: imagine a tape measure. In a tape measure a thin, flexible strip of metal is wound into a spiral. Then, when the metal is uncoiled, it naturally returns to its original shape. That’s exactly how we plan to make our sails. The skin of our sail or the inner spars (we haven’t finalized our design) will be made of tape measure like material (2mm thick steel) and the wing will be able to extend out of the cargo container. The video in the first paragraph explains this in a bit more detail. By fitting our sail into a cargo container we allow for our device to be installed on any cargo ship right at port. Remember how we mentioned that some shippers are ordering a lot more ships and some ships are getting retrofitted with new fuel? Well, shipyards are backed up for the next 5 years. By making a device that requires no shipyard to install, not only will we drastically outcompete other retrofit WASP companies in terms of deployment cost, but we will be the only company with a product shippers can put on their ship without a multiple year wait time. Do you have any interesting stories around sailing or wind tech? We would love to hear your ideas, experiences, and feedback on any and all of the above!

New best story on Hacker News: Launch HN: OutSail (YC W23) – Wingsails to reduce cargo ship fuel consumption

Launch HN: OutSail (YC W23) – Wingsails to reduce cargo ship fuel consumption
449 by jmoorebeek | 211 comments on Hacker News.
Hi HN! I’m Joseph, and along with Arpan and Bailey we are the founders of OutSail Shipping ( https://ift.tt/zF8va17 ). We’re building a sail the size of a 747 that rolls up into a shipping container. When deployed, it will generate thrust from the wind to reduce the fuel consumption of a cargo ship. An array of these devices will reduce fuel consumption on ships by up to 20%. These sails are easily stowed and removed to cause no interference with cargo operations. Here’s a short video showing our prototype: https://www.youtube.com/watch?v=VUpVqzpym54 . Sails powered ships for millennia; but then the convenience of energy-dense fuels displaced sails. As ship speeds eventually exceeded wind speeds, the consensus became that sails had no place in shipping and were relegated to hobbyists and sport. Fast forward a century and a half, and maritime shipping, like all other industries, is facing a reckoning to mitigate the greenhouse gasses produced by their activities. The International Maritime Organization (IMO) has introduced new regulations which use a vessel’s Carbon Intensity Indicator (CII) to grade ships. This grading scale becomes more aggressive over time, and any ship with a poor grade must take corrective action. The corrective actions can be as non-invasive as reducing speed (aka: slow steaming) or as extreme as a retrofit to use a different, cleaner fuel source. This costs millions and takes a ship out of commission for months, and it’s difficult to ensure your (now more expensive) fuel is available at every port of call. Ship owners are hedging their bets that slow steaming will dominate their future, with ship order books full to reflect the increased capacity needed when containers take 20% longer to cross the ocean. Or option three. There is sufficient wind on the ocean to power the entire shipping industry, if you’re willing to grab it. Wind Assisted Ship Propulsion (WASP) devices can be used as a corrective action to improve a vessel’s CII rating, without reducing ship speed or changing the route. In other words, a return of sails. We are hardware engineers with over two decades of experience between us, working at Tesla, SpaceX, JPL, Relativity, and some startups. The idea for OutSail came from Arpan and Joseph getting coffee after work one day. When we asked each other “What would you do if you weren’t building satellites?” maritime cargo came up from both sides; Arpan from having studied the industry for opportunities to reduce emissions, and Joseph from a love of hydrodynamics and maybe too many sea-shanties. Bailey and Arpan, meanwhile, had been looking at working on bicycling infrastructure. What brought the three of us together was actually a Dungeons & Dragons game where we realized we made a good team! We settled on OutSail as a good fit for our hardware hacking mentality, trading in our druids staffs for spanners. Aerodynamically, sails are simply vertical wings. Wind blowing across the vessel causes the sail to generate lift and drag, and the resultant vector has some forward component to pull the ship through the water. However, if the wind comes from an angle too close to the direction of travel, there is no thrust. As an added complication, the sail only sees the relative wind. If the ship travels faster, the wind will appear to come from closer and closer to the direction of travel, even if the true wind is coming from perpendicular to your course! Despite this, standard sails can still produce forward thrust as long as the wind is at least 20 degrees off from directly in front of the vessel. This is how our sails can still save power, even on a fast moving vessel. There are many sail technologies out there. A common question we get asked is “Are you going to use flettner rotors/suction airfoils?”. Both of these technologies use power supplied by the ship to increase the lift produced by a surface; rotor-sails spin, and suction airfoils…suck? Each of these have a place, especially at low vessel speeds. But our customers ask us for a solution that works for container ships cruising at the relatively high speed of 22kt. At these speeds, the relative wind is almost always ahead of you, so lift/drag becomes more important. Powered sails suffer from poor lift/drag, both from the high induced drag from very high lift coefficients, and system losses from drawing on ship’s power. So no we are not going with flettner rotors/suction airfoils. While they are the new exciting technology on the block, if you factor in their power usage and high drag ratio, they are just not as practical as a simple sail. So now that we’ve given a general summary of sailing, it’s time to explain how a 747 wing will ever fit inside a 9ft tall cargo container. It’s simple really: imagine a tape measure. In a tape measure a thin, flexible strip of metal is wound into a spiral. Then, when the metal is uncoiled, it naturally returns to its original shape. That’s exactly how we plan to make our sails. The skin of our sail or the inner spars (we haven’t finalized our design) will be made of tape measure like material (2mm thick steel) and the wing will be able to extend out of the cargo container. The video in the first paragraph explains this in a bit more detail. By fitting our sail into a cargo container we allow for our device to be installed on any cargo ship right at port. Remember how we mentioned that some shippers are ordering a lot more ships and some ships are getting retrofitted with new fuel? Well, shipyards are backed up for the next 5 years. By making a device that requires no shipyard to install, not only will we drastically outcompete other retrofit WASP companies in terms of deployment cost, but we will be the only company with a product shippers can put on their ship without a multiple year wait time. Do you have any interesting stories around sailing or wind tech? We would love to hear your ideas, experiences, and feedback on any and all of the above!

Monday, April 3, 2023

New best story on Hacker News: Italian privacy regulator bans ChatGPT

Italian privacy regulator bans ChatGPT
506 by sarusso | 677 comments on Hacker News.


New best story on Hacker News: CDC team studying East Palestine train derailment fell ill during investigation

CDC team studying East Palestine train derailment fell ill during investigation
487 by hammock | 163 comments on Hacker News.


New best story on Hacker News: Police relied on Clearview AI and put the wrong person in jail

Police relied on Clearview AI and put the wrong person in jail
473 by danso | 123 comments on Hacker News.


New best story on Hacker News: Italian privacy regulator bans ChatGPT

Italian privacy regulator bans ChatGPT
506 by sarusso | 677 comments on Hacker News.


New best story on Hacker News: The day Windows died

The day Windows died
611 by alexzeitler | 468 comments on Hacker News.


New best story on Hacker News: The day Windows died

The day Windows died
578 by alexzeitler | 437 comments on Hacker News.


Saturday, April 1, 2023

New top story on Hacker News: Another Reply to Josef PR┼п┼бa

Another Reply to Josef PR┼п┼бa
18 by todsacerdoti | 5 comments on Hacker News.


New top story on Hacker News: Show HN: Coursemate, connect with other self learners

Show HN: Coursemate, connect with other self learners
9 by collin1 | 1 comments on Hacker News.
Hey Hacker News! My name is Collin, 18 years old and doing a gap year after finishing high school last year. This was my first real project after starting to learn web development around 5 months ago. I came up with this idea as it was a real pain for me to find other people from my country and especially my age, learning and taking online courses about the same stuff online. Lots of these online courses include their own discord communities and forums, but I still found it very hard to connect with other people in there. Thats why I built Coursemate. I would love to get your feedback on it! :)

New best story on Hacker News: Postgres as a graph database

Postgres as a graph database
503 by elorant | 110 comments on Hacker News.


New best story on Hacker News: Postgres as a graph database

Postgres as a graph database
500 by elorant | 109 comments on Hacker News.


New best story on Hacker News: Woodworking as an escape from the absurdity of software

Woodworking as an escape from the absurdity of software 507 by imaq | 433 comments on Hacker News.