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charles aylward

@cda.twttr.social

space engineering, embedded systems, sensor networks unresolved marching band issues

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18.11.2024
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Latest posts by charles aylward @cda.twttr.social

If you see this post a monster

25.02.2026 00:09 πŸ‘ 948 πŸ” 188 πŸ’¬ 9 πŸ“Œ 37

I'm on team sinkhole. Come on, sinkhole, you can do it.

25.02.2026 03:11 πŸ‘ 6 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

"The AI revolution needs to be done with us, not to us." -- Dr. Hannah Fry

20.02.2026 16:52 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Mars 2020 Perseverance Rover SHERLOC Instrument Isolation System - NASA Technical Reports Server (NTRS) The NASA Jet Propulsion Laboratory (JPL) successfully landed the Mars 2020 Perseverance Rover at Jezero Crater on the Martian surface. Perseverance’s main mission objective is to cache Martian rock an...

Ah, found a paper on just this! These isolators shield SHERLOC from the percussion of the drill, compensate for the extreme thermal range, and compliance during installation (among other things). Paper found in the link therein ntrs.nasa.gov/citations/20...

18.02.2026 04:09 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

This reverse engineering effort is so hardcore. bsky.app/profile/tube... 😲

18.02.2026 02:30 πŸ‘ 4 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Perseverance’s Scanning Habitable Environments with Raman and Luminescence for Organics and Chemicals (SHERLOC) Investigation - Space Science Reviews The Scanning Habitable Environments with Raman and Luminescence for Organics and Chemicals (SHERLOC) is a robotic arm-mounted instrument on NASA’s Perseverance rover. SHERLOC has two primary boresight...

Oops, forgot link: doi.org/10.1007/s112...

18.02.2026 02:21 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Ahh. "Isolators" was the magic search phrase.

18.02.2026 02:18 πŸ‘ 3 πŸ” 0 πŸ’¬ 2 πŸ“Œ 0
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Any MechE rover heads out there know what went into the design of these mechanical interfaces to SHERLOC on Perserverance? It's like a gas strut with two degrees of compliance at both ends. Is this just a combination of thermal expansion, shock, assembly compliance? Why solid thin-fin vs a joint?

18.02.2026 02:03 πŸ‘ 5 πŸ” 1 πŸ’¬ 1 πŸ“Œ 1
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Looking east towards Lone Pine. Probably around the 3800 meter mark. I think that is Consultation Lake (it's been a minute!). This one is so blown out it has its own vignette.

22.01.2026 04:01 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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That delicious cragginess on the way over toward Mt. Whitney.

22.01.2026 03:58 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
Towers of cold icy granite in Cirque of the Towers. I recall feeling rather underdressed in a way only a teenager's planning could manage.

Towers of cold icy granite in Cirque of the Towers. I recall feeling rather underdressed in a way only a teenager's planning could manage.

22.01.2026 03:54 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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22.01.2026 03:51 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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I found a grip of negatives of photos I shot as a teenager. It was this weird camera that shot wide on 35mm. The exposures are a bonkers 14x37mm. Lots of knicks in the negatives. The lens wasn't great and there was no shutter speed control. I think this is heading into the Cirque of the Towers.

22.01.2026 03:49 πŸ‘ 2 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Chotiner has really been doing the work the last few years. Even when the situation is terrible (as with this one), reading this type of sober interview/accounting feels almost like a salve in comparison to the general media/information environment.

06.01.2026 19:40 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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New Interview: www.newyorker.com/news/q-and-a...

03.01.2026 21:42 πŸ‘ 12131 πŸ” 3459 πŸ’¬ 213 πŸ“Œ 221
A skeletal figure floats off the ground, wrapped in a cape made of autumn leaves. It wields a scythe adorned with a harvest of gourds.

A skeletal figure floats off the ground, wrapped in a cape made of autumn leaves. It wields a scythe adorned with a harvest of gourds.

Repostin' The Autumnal. Manifesting my seasonal mood.

17.10.2025 18:10 πŸ‘ 5277 πŸ” 1491 πŸ’¬ 26 πŸ“Œ 11
a sketch with digital color of a woman resting her head on her arms on top of a open book. Tangled branches envelope her, and a goblin pokes its head over the table.

a sketch with digital color of a woman resting her head on her arms on top of a open book. Tangled branches envelope her, and a goblin pokes its head over the table.

18.09.2025 17:43 πŸ‘ 4371 πŸ” 1094 πŸ’¬ 25 πŸ“Œ 22
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THIS ANIMATION IS SO INSANE

12.09.2025 13:42 πŸ‘ 13333 πŸ” 4012 πŸ’¬ 80 πŸ“Œ 193
ink and watercolor illustration with digital color by Abigail Larson depicting a black dog with red eyes with it's jaws open wide showing long teeth ready to snatch a large falling Autumn leaf.

ink and watercolor illustration with digital color by Abigail Larson depicting a black dog with red eyes with it's jaws open wide showing long teeth ready to snatch a large falling Autumn leaf.

ink and watercolor illustration with digital color by Abigail Larson depicting a black dog with red eyes holding an Autumn leaf in its mouth. Many other dead leaves litter the ground around the dog.

ink and watercolor illustration with digital color by Abigail Larson depicting a black dog with red eyes holding an Autumn leaf in its mouth. Many other dead leaves litter the ground around the dog.

Happy Autumn πŸ‚

23.09.2025 10:56 πŸ‘ 3124 πŸ” 1022 πŸ’¬ 17 πŸ“Œ 6
board layout in KiCad with lots of layers and colors

board layout in KiCad with lots of layers and colors

i reverse-engineered the Raspberry Pi Compute Module 5! check it out at github.com/schlae/cm5-r...

24.08.2025 20:57 πŸ‘ 344 πŸ” 64 πŸ’¬ 9 πŸ“Œ 8

it was good stuff.

03.09.2025 04:30 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

sweet patch!

15.07.2025 04:44 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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Entering the Ruins. Personal artwork 2025.

01.07.2025 18:30 πŸ‘ 413 πŸ” 71 πŸ’¬ 5 πŸ“Œ 0
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A 'US-made iPhone' is pure fantasy.

Look at their suppliers, which Apple publishes itself

www.404media.co/a-us-made-ip...

08.04.2025 15:49 πŸ‘ 1381 πŸ” 356 πŸ’¬ 66 πŸ“Œ 16
Zelensky thanks America for four minutes straight
Zelensky thanks America for four minutes straight YouTube video by Kyiv Independent

Trump and Vance have repeatedly claimed that Zelensky has not been sufficiently grateful for U.S. support throughout the war.

We compiled instances where Zelensky has publicly expressed gratitude to the U.S., its people, and its leadership for being Ukraine’s largest supporter.

01.03.2025 00:07 πŸ‘ 3638 πŸ” 1198 πŸ’¬ 207 πŸ“Œ 77
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The hardest working font in Manhattan A story of a 150-year-old font you have never heard of – and one you probably saw earlier today.

fun piece about an anonymous font you see everywhere aresluna.org/the-hardest-... tbh I did not read every one of the 6,100 words but I appreciate that @aresluna.org wrote them all

17.02.2025 05:42 πŸ‘ 9 πŸ” 2 πŸ’¬ 0 πŸ“Œ 1

My review of Caves of Qud, based solely on phrases my partner mutters to themself while playing, is that it's effectively a Pliny the Elder simulator. They just hissed, "I believe honey has something to do with healing, but I don't know what it is" and then starting inspecting a pig

14.01.2025 11:29 πŸ‘ 1166 πŸ” 315 πŸ’¬ 17 πŸ“Œ 4
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Want to Wear a Tiny Apollo Guidance Computer on Your Wrist? A British company is selling a wristwatch that’s a shrunk-down replica of the Apollo Guidance Computer interface that the Apollo astronauts used to maneuver their spacecraft to the Moon and back. From Gizmodo: The ori

The DSKY Moonwatch is a wristwatch that’s a shrunk-down replica of the Apollo Guidance Computer interface that the Apollo astronauts used to maneuver their spacecraft to the Moon and back. So nerdy! [kottke.org]

10.01.2025 20:32 πŸ‘ 103 πŸ” 36 πŸ’¬ 4 πŸ“Œ 20
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I did it again!

Jurassic Park with accurate raptors, a short part 2

#jurassicpark #blender3d

05.01.2025 22:17 πŸ‘ 13149 πŸ” 4186 πŸ’¬ 413 πŸ“Œ 516