Hacker News: rx_tx

New comment by rx_tx in "NTP at NIST Boulder Has Lost Power"

rx_tx — Mon, 22 Dec 2025 22:14:39 +0000

If you ever are in Paris, I can't recommend the Musee des Arts et Metiers enough. I believe they have the several reference platinum kilograms that are now out of spec. [1] they also have the original actual Foucault pendulum that was used to demonstrate Earth's rotation. (and a replica doing a live demo, of course)

They have so many incredible artifacts (for weights and measures but also so much more: engineering, physics, civil engineering, machining,...)

[1]: https://collections.arts-et-metiers.net?id=13404-0001-

New comment by rx_tx in "alpr.watch"

rx_tx — Wed, 17 Dec 2025 03:54:43 +0000

On the topic of tricking the automated phone usage detection cameras this youtuber had an entertaining video where he built a car phone holder by molding his hand and making a replica.

https://youtu.be/Ud8kFCmalgg

New comment by rx_tx in "The Rapper 50 Cent, Adjusted for Inflation"

rx_tx — Fri, 17 Oct 2025 17:17:29 +0000

> Based on 50 Cent's name being coined

I see what they did there.

BART – September 5, 2025 Service Disruption Update [pdf]

rx_tx — Mon, 08 Sep 2025 06:53:20 +0000

Article URL: https://www.bart.gov/sites/default/files/2025-09/Memo%20%28DGM%20to%20BOD%29%20September%205%2C%202025%20Service%20Disruption%20Update_09.05.2025.pdf

Comments URL: https://news.ycombinator.com/item?id=45165327

Points: 2

# Comments: 0

New comment by rx_tx in "Hacking a Smart Home Device (2024)"

rx_tx — Tue, 15 Apr 2025 05:17:16 +0000

I suspect hiding the manufacturer/model was very much on purpose, they blurred the markings on the PCB and hid the domain name for the manufacturer's API calls (and in the console logs as well).

New comment by rx_tx in "WWI's 'Dazzle' Camouflage Seemed Effective Due to Unexpected Optical Trick"

rx_tx — Tue, 25 Mar 2025 03:30:28 +0000

H.I. Sutton did a great video [1] about it that also explains how it was beneficial due to the way enemy submarines had to estimate speed and heading and could get fooled.

[1]: https://www.youtube.com/watch?v=Kw7vq_YD6JM

New comment by rx_tx in "Nvidia’s $589B DeepSeek rout"

rx_tx — Tue, 28 Jan 2025 08:14:20 +0000

This article has good background, context, and explanations [1] They skipped CUDA and instead used PTX which is a lower level instruction set where they were able to implement more performant cross-chip comms to make up for the less-performant H800 chips.

[1]: https://stratechery.com/2025/deepseek-faq/

Apple Watch with Vitality

rx_tx — Fri, 03 Jan 2025 02:17:53 +0000

Article URL: https://www.johnhancock.com/life-insurance/vitality/apple-watch.html

Comments URL: https://news.ycombinator.com/item?id=42581521

Points: 1

# Comments: 0

New comment by rx_tx in "Absinthe: From green fairy to moral panic"

rx_tx — Mon, 16 Dec 2024 22:25:33 +0000

Gastropod is a great listen, and they did an absinthe episode, interesting history and details.

https://gastropod.com/absinthe-the-worlds-most-dangerous-dri...

New comment by rx_tx in "Linux/4004: booting Linux on Intel 4004 for fun, art, and no profit"

rx_tx — Fri, 20 Sep 2024 20:34:02 +0000

the "World's longest song" is from John Cage, called As Slow As Possible and is played continuously on an organ in a church in Germany.

It will be completed in the year 2640.

https://en.wikipedia.org/wiki/As_Slow_as_Possible

New comment by rx_tx in "Air Con: $1697 for an on/off switch"

rx_tx — Thu, 29 Aug 2024 05:07:08 +0000

It's been a big pain for Tesla as well, where their tiny 8GB emmc on the center screen would fail since they logged to it too much... 134,000 vehicles recalled eventually after they denied it was an issue.

https://www.tesla.com/support/8gb-emmc-recall-frequently-ask...

New comment by rx_tx in "Panasonic Toughbook 40"

rx_tx — Thu, 29 Aug 2024 00:16:12 +0000

the specs on the one in the article mention it's a multitouch RESISTIVE trackpad, so I don't expect it to be great, at all.

New comment by rx_tx in "Panasonic Toughbook 40"

rx_tx — Wed, 28 Aug 2024 17:28:02 +0000

> Integrated tetra-array mic

That's definitely an uncommon way of saying quad microphone array.

It's an AI toughbook due to having a unspecified "1.4Ghz AI Boost NPU" which seems to be something Intel offers, and according to other websites, operates at 34 TOPS.

New comment by rx_tx in "NASA announces Boeing Starliner crew will return on SpaceX Crew-9"

rx_tx — Sat, 24 Aug 2024 17:39:37 +0000

Maybe NASA still wants to get something for the money spent launching Crew 9 and get some science done, not just be a rescue mission. They don't want to cut that mission short.

New comment by rx_tx in "NASA announces Boeing Starliner crew will return on SpaceX Crew-9"

rx_tx — Sat, 24 Aug 2024 17:30:43 +0000

A few tidbits/notes I took:

- They'll reconfigure Crew-8 for 6 occupants for contingency evac between Starliner undock and Crew-9 arrival.

- Starliner leaving ISS autonomously early September

- Crew 9 launching no later than Sept 24th with 2 crew + 2 empty seats

- Crew 9 coming back down in ~Feb 2025

New comment by rx_tx in "The guidance system and computer of the Minuteman III nuclear missile"

rx_tx — Tue, 20 Aug 2024 02:09:49 +0000

If you want to understand GPS more, https://ciechanow.ski/gps/ is always an amazing read, witchcraft confirmed.

New comment by rx_tx in "East Germany invented 'unbreakable' drinking glasses"

rx_tx — Wed, 07 Aug 2024 18:39:20 +0000

I tend to find large "Gigogne" Duralex mixing bowls often in Goodwill/second hand stores in the Bay Area, and I can't resist getting them. They're truly versatile and very sturdy, and they stack very well without getting jammed.

New comment by rx_tx in "ESA report shows unsustainable levels of orbital debris"

rx_tx — Wed, 24 Jul 2024 00:04:47 +0000

What do you do with the added deltaV from the venting? (not sure if significant) It could send the already-out of control rocket stage/object to a weirder or worse orbit, increasing the changes of collision.

New comment by rx_tx in "The Race to Seal Helium HDDs (2021)"

rx_tx — Tue, 09 Jul 2024 07:00:04 +0000

(2021)

New comment by rx_tx in "Twonkie: A USB-PD sniffer/injector/sink based on Google's Twinkie open hardware"

rx_tx — Tue, 25 Jun 2024 06:17:52 +0000

ChargerLab's KM003C passes in Thunderbolt 4 correctly at least.

(source: I have one and can have it between my macbook pro and a TB4 dock and two displays work correctly)