John T (the GRA is silent)

John T (the GRA is silent)

@grajohnt.bsky.social

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

309 Followers 565 Following 520 Posts Joined Jul 2023
1 week ago
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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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1 week ago

I either take that back or I fixed it...we'll see how it goes...

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1 week ago
A partially lit LED strip in a thin plastic frame

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...

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1 week ago
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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

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...

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1 week ago

Technically 0807, I think. So more or less 2020 in size.

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1 week ago
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...

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

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1 week ago

160/m - not too bad

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1 week ago
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Tiny (2.7mm wide) addressable RGB LED strips!

Made sound-reactive using wled.

More to come!

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1 week ago

Just chanting "LAKES LAKES LAKES!" over and over again.

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2 weeks ago
A modular synth edge-lit by warm white LED n00ds.

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.

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3 weeks ago

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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3 weeks ago

It is ironically pretty expensive to buy cardboard shipping tubes from Amazon.

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1 month ago

Don't make me photoshop a big golden hotel sign over it with a particular name...

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1 month ago

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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1 month ago

I have a (yet to be completed) RF amp that has a heat sink with at least two broken taps in it πŸ˜…

Surely that helps with the heat conduction, right?

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1 month ago

Almost as bad as tapping aluminum heat sinks...

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1 month ago

Isn't it "bring your vomiting kid to work day"?

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1 month ago
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

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!

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1 month ago
An array of engraved and formed acrylic masks in various colors

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

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1 month ago
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".

I was going to comment on this one, but it just feels like punching down.

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1 month ago

It's a steal!

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1 month ago
A custom F350 that has been stretched out so it has six doors and rims the size of a toddler.

If I park this in the parking garage at work, how much will my co-workers hate me on a scale from 1-10?

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1 month ago

Oh, but they never actually are...I'm sure there's a ludicrous price in the ad, or something like "will trade for a late model Ferrari".

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1 month ago
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Does this have the towing capacity to haul my side-by-side? What about the other way around?

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1 month ago

Well, apparently that's actually a thing. I still think it's unhinged.

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1 month ago
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About to start a #sleeper build, and I hear #brakes are a good starting point. Does anyone know of a Stage 3 brake kit for this #Geo?

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1 month ago
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That said...

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1 month ago
Radar composite over Texas showing rain, ice, mixed precip, and snow

Pretty much - ice storm inbound!

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1 month ago
Ad for a 1978 Lada 1600

Looking for a daily driver for my kid, something safe that we can work on together and has easy-to-find parts.

Would this fit the bill?

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1 month ago
An ad for a Rolls Royce Turbine engine

I'm looking to do an engine swap for an NA #Miata, has anyone used one of these and have a wiring diagram?

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