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John T (the GRA is silent)

@grajohnt.bsky.social
315 followers 570 following 543 posts

Vibe Personality Hire Geology PhD, maker of absurd things, radio, and other nonsense. Always interested in how we learn through failure. Most posts over at grajohnt @chaos.social

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John T (the GRA is silent) @grajohnt.bsky.social · 16/09/2026
Did you know that anyone can propose US place names, and they can be named after someone five years after their death? In other news, I'm going to need some help finding the smallest penis-shaped body of water in the US.
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John T (the GRA is silent) @grajohnt.bsky.social · 05/09/2026
Well, that's strangely attractive
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That Dragon Guy @paintyourdragon.bsky.social · 14/05/2026
Before/after revisiting an old RP2040 project while flopped out in bed with a cold. Buttery! The frame rate, I mean, not me. 🌍🧈👹💦 Fun fact: RP2350 is slightly slower at this despite everything.
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John T (the GRA is silent) @grajohnt.bsky.social · 10/05/2026
It's about to get really loud out there! (Megatibicen resh, just emerged from its nymph-stage exoskeleton)
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John T (the GRA is silent) @grajohnt.bsky.social · 05/05/2026
FWIW, Mary Robinette is also a lovely person (and has a talking cat!)
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John T (the GRA is silent) @grajohnt.bsky.social · 03/05/2026
You'll be thrilled to know that when we set up a Google Earth server at a former company, we had a production server (earth) and a test server. I named the test server serpo. I'm fairly sure no one ever got the joke.
earth.company
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John T (the GRA is silent) @grajohnt.bsky.social · 02/05/2026
I'm afraid you're going to have to do a bean tier chart now...
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John T (the GRA is silent) @grajohnt.bsky.social · 28/04/2026
Um...what?
A Chrome 'download' icon with the hint text "Install Thomas Bradley"
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John T (the GRA is silent) @grajohnt.bsky.social · 24/04/2026
One of the greatest phone things I ever had was 'vacation mode' on my work mobile. When set, it would auto-answer and essentially say "this person is on vacation, if you would *really* like to proceed with your call, press 1". I don't know why this isn't more common.
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Reposted by John T (the GRA is silent)
Benjamin Balthaser @blbalthaser.bsky.social · 24/04/2026
The problem is not that older faculty are sticking around - it’s that they are not being replaced. The argument of this piece is quite pernicious as it substitutes a class war btw workers and a neoliberal administration w an age war btw different ranks of workers
Professors Are Too
Old
The academy's gerontocracy problem is worse than anyone admits.
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John T (the GRA is silent) @grajohnt.bsky.social · 23/04/2026
I hear all it takes is one bottle to turn the river green for St. Patrick's day.
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John T (the GRA is silent) @grajohnt.bsky.social · 22/04/2026
How can I help?
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John T (the GRA is silent) @grajohnt.bsky.social · 16/04/2026
Just wait until you think you're done and then experience death by 1000 format nitpickings.
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GuyD @thenotoriousguy.bsky.social · 15/04/2026
My friend @drlucyrogers.com probably won’t have mentioned it, but she has a book coming out tomorrow, and it’s rather good www.penguin.co.uk/books/461507...
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John T (the GRA is silent) @grajohnt.bsky.social · 15/04/2026
A quick trip to the eastern Sierras and/or Europe will fix that for you real fast.
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John T (the GRA is silent) @grajohnt.bsky.social · 07/04/2026
Although moolooite is another good choice, if you want *real* minerals.
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John T (the GRA is silent) @grajohnt.bsky.social · 07/04/2026
Blackmountite, obviously.
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John T (the GRA is silent) @grajohnt.bsky.social · 07/04/2026
I think it's interesting to imagine a dark-side landing as well. Especially if things went wrong. (But probably easy enough to set up a relay if you wanted to)
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John T (the GRA is silent) @grajohnt.bsky.social · 02/04/2026
ロケット娘
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Reposted by John T (the GRA is silent)
Sarah O'Connor @sarahoconnorft.ft.com · 26/03/2026
In spite of all the talk of Claude Code and Codex meaning the end of humans writing code, software job adverts are actually going up, according to @jburnmurdoch.ft.com's crunching of millions of job ads for this week's The AI Shift www.ft.com/content/7325...
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John T (the GRA is silent) @grajohnt.bsky.social · 25/03/2026
Let's go with Microsoft being called "Bob".
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Jeff Moore @utahgeohaz.bsky.social · 25/03/2026
Tower in Motion: Resonance Mode Analysis of Devils Tower; new from us, now published in GSA Today: www.geosociety.org/GSA/Publicat...
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John T (the GRA is silent) @grajohnt.bsky.social · 22/03/2026
Here's (I think) the infrasound recording of the #Houston #meteor sonic boom as it passed over here yesterday afternoon. Unconfirmed, but the timing is right. Via my @raspishake.bsky.social #RaspberryBoom
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John T (the GRA is silent) @grajohnt.bsky.social · 22/03/2026
This is my own #RaspberryBoom #infrasound monitor, so I'm just curious. I suspect that it is, but I live in a noisy place, so it's hard to be sure. (Please ignore the very big event an hour or so ago when I rebooted it, thinking it was offline!)
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John T (the GRA is silent) @grajohnt.bsky.social · 22/03/2026
@stevenjgibbons.bsky.social - could I get an opinion on whether you think this might be the sonic boom signature of the #Houston meteor this afternoon? Zooming in, it's vaguely N-shaped, but not enough to convince me. Timing is correct at ~21:40UTC Event: fireball.amsmeteors.org/members/imo_...
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John T (the GRA is silent) @grajohnt.bsky.social · 21/03/2026
I've had these a minute.
A battered but unopened two pack of Radio Shack (Archer) PL-259s
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John T (the GRA is silent) @grajohnt.bsky.social · 19/03/2026
I can't believe no one has done this, perhaps because it's somewhat questionable under Swiss law, but I had Gemini take the #Bern Canton coat of arms and replace the bear with a #BerneseMountainDog and change the colors. The red is for their big hearts, and white for the snow they love.
Argent, a bend Gules, overall a Bernese Mountain Dog rampant, ppr.
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John T (the GRA is silent) @grajohnt.bsky.social · 17/03/2026
So would this mean a surprise attack on an island part of a country wouldn't count as an attack on that country? Surely everyone would see it that way, right?
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John T (the GRA is silent) @grajohnt.bsky.social · 04/03/2026
IMPORTANT #RODENT NEWS: They can throw up. Was reading about #squirrel behavior yesterday and came across this 2025 paper: "Observation of a grey squirrel (Sciurus carolinensis) suggests that some rodents can vomit" Rarely have I been so convinced by a paper just from Fig 1.
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John T (the GRA is silent) @grajohnt.bsky.social · 03/03/2026
I either take that back or I fixed it...we'll see how it goes...
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John T (the GRA is silent) @grajohnt.bsky.social · 03/03/2026
They seem very fraglie - this one seems to have developed a break during mounting in this frame, and not at all in place where I would have expected it...
A partially lit LED strip in a thin plastic frame
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John T (the GRA is silent) @grajohnt.bsky.social · 03/03/2026
And yeah - $6/m on AE, so a bit cheaper. BUT - they also have a COB version, which honestly I would have preferred... www.aliexpress.us/item/3256808...
aliexpress.us
Ultra Narrow 2.7mm WS2812B LED Strip SMD COB Individually Addressable 160Leds/M WS2812 Smart Dream Color Pixel Light DC5V/12V - AliExpress
Smarter Shopping, Better Living! Aliexpress.com
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John T (the GRA is silent) @grajohnt.bsky.social · 03/03/2026
Technically 0807, I think. So more or less 2020 in size.
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John T (the GRA is silent) @grajohnt.bsky.social · 03/03/2026
Yep - 2020's. I needed them quick, so I got them from the 'zon at $15/m. Half that with bigger quantities, and probably even a bit cheaper on AliE. www.amazon.com/dp/B0CYGHHR96
amazon.com
Amazon.com: Xnbada 3.2FT WS2812B WS2812 2.7mm Ultra Narrow LED Strip,160LEDs/m Individually Addressable Dream Color Flexible Smart Light Tape for Bedroom,Kitchen,Stage,TV Backlight,DC5V : Tools & Home...
Amazon.com: Xnbada 3.2FT WS2812B WS2812 2.7mm Ultra Narrow LED Strip,160LEDs/m Individually Addressable Dream Color Flexible Smart Light Tape for Bedroom,Kitchen,Stage,TV Backlight,DC5V : Tools & Home...
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John T (the GRA is silent) @grajohnt.bsky.social · 03/03/2026
160/m - not too bad
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John T (the GRA is silent) @grajohnt.bsky.social · 03/03/2026
Tiny (2.7mm wide) addressable RGB LED strips! Made sound-reactive using wled. More to come!
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John T (the GRA is silent) @grajohnt.bsky.social · 27/02/2026
Just chanting "LAKES LAKES LAKES!" over and over again.
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John T (the GRA is silent) @grajohnt.bsky.social · 26/02/2026
Made a custom acrylic faceplate for my new Music Thing Modular Workshop System, and testing a POC of edge-lighting it. Lots of components means not a ton of light makes it to the middle, but it's not bad.
A modular synth edge-lit by warm white LED n00ds.
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John T (the GRA is silent) @grajohnt.bsky.social · 18/02/2026
It brings me a bit of joy that many of these politicians will often have to fly through Kansas City International airport (MCI) (which, like the city, is actually in Missouri). MCI has the correct sort of restrooms, one big inclusive space with individual (fully closed) stalls.
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John T (the GRA is silent) @grajohnt.bsky.social · 15/02/2026
It is ironically pretty expensive to buy cardboard shipping tubes from Amazon.
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John T (the GRA is silent) @grajohnt.bsky.social · 06/02/2026
Don't make me photoshop a big golden hotel sign over it with a particular name...
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John T (the GRA is silent) @grajohnt.bsky.social · 06/02/2026
If it were another organization, there would have been a forced relocation to a nice bland office park in Milton Keynes to save money.
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John T (the GRA is silent) @grajohnt.bsky.social · 31/01/2026
I have a (yet to be completed) RF amp that has a heat sink with at least two broken taps in it 😅 Surely that helps with the heat conduction, right?
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John T (the GRA is silent) @grajohnt.bsky.social · 31/01/2026
Almost as bad as tapping aluminum heat sinks...
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John T (the GRA is silent) @grajohnt.bsky.social · 28/01/2026
Isn't it "bring your vomiting kid to work day"?
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John T (the GRA is silent) @grajohnt.bsky.social · 28/01/2026
Inside is a label and a location sticker so you can mark where you caught it on the parade route. Hopefully at least a few people share theirs!
The inside of the mask showing a label with an insta QR code and the text "PLEASE MARK WHERE YOU CAUGHT ME AND SHARE!", along with a google-maps-style location marker sticker
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John T (the GRA is silent) @grajohnt.bsky.social · 28/01/2026
I think I'm finally done making masks for the #KreweOfFreret #MardiGras parade - less than two weeks to go! These will be thrown from the Queen's float, so turn up if you want to catch one :) #BeMardiGras
An array of engraved and formed acrylic masks in various colors
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John T (the GRA is silent) @grajohnt.bsky.social · 25/01/2026
I was going to comment on this one, but it just feels like punching down.
A FB Marketplace ad for a (sic) Buike by someone who doesn't know how old it is or what's wrong with it, just that it's been sitting in the driveway for "7-8 years".
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John T (the GRA is silent) @grajohnt.bsky.social · 25/01/2026
It's a steal!
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John T (the GRA is silent) @grajohnt.bsky.social · 25/01/2026
If I park this in the parking garage at work, how much will my co-workers hate me on a scale from 1-10?
A custom F350 that has been stretched out so it has six doors and rims the size of a toddler.
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