John T (the GRA is silent)
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grajohnt.bsky.social
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
I'm listing my MK3S for sale with a heavy heart. It has served me well, though!
November 13, 2025 at 6:08 PM
Finally got some denser RGB LED strips in, and while I'm not sure they're brighter, they're more fun.

Still more experimenting to do!
November 12, 2025 at 1:03 AM
How long have I been #TeamRyobi ?
This long.
November 10, 2025 at 11:51 PM
#Hackaday #Supercon through the lens of my Googly Eye Camera
November 9, 2025 at 5:27 PM
Now we're getting somewhere...
November 8, 2025 at 8:34 PM
Since only the 'skin' on the outside is opaque, I figured out that if you take a diamond burr to it, you can strip it off and light it from the outside. This is getting closer to what I want.

I'm going to need some brighter LED strips.
November 8, 2025 at 5:39 PM
Lighting it from the middle is neat, but not great in the infinity mirror setup. (Also, I promise it looks better in pictures than it does in reality!)
November 8, 2025 at 2:52 PM
Still trying different things - haven't landed on something that really works yet.
November 8, 2025 at 2:01 PM
That's definitely going to need to be brighter - it's also hard to take a video of!
November 8, 2025 at 12:24 AM
Proof-of-concept of a thing that's been in my head for years. Maybe more to come?
November 7, 2025 at 11:20 PM
'tis the season of:
"What kind of clothes should I pack?"
"Yes."
November 7, 2025 at 2:25 PM
Flash your badge and get a free drink, medical issue, or cookie!
November 6, 2025 at 8:49 PM
One of the more ludicrous (but delightful) boards I was given at #Supercon was this one - the CapKey. It's a capacitive-touch keyboard the size of a keycap.

Would tag the maker, but can't seem to find him!
November 6, 2025 at 3:16 PM
Not a bad #Supercon haul, including some wonderful #SAO boards from some wonderful people!
November 4, 2025 at 2:45 PM
Some pre- #supercon SOTA with @k5em.com on Flint Peak
November 2, 2025 at 4:17 PM
All-in on googly eyes at #supercon
November 2, 2025 at 4:56 AM
October 28, 2025 at 6:30 PM
Will I be able to cram this all into a box and integrate it before @hackadayofficial.bsky.social #supercon?

Maybe!
October 12, 2025 at 5:46 PM
A little #RaspberryPiPico project with a DAC for sound effects, some lights, and a PIR for motion sensing.

Should be "fun" for the trick-or-treaters on #halloween!
October 9, 2025 at 8:28 PM
This is mostly a thought experiment, and LEDs have long been used as useful indicators in oscillator circuits, but LED noodles can be a useful tool to help "see" what's happening in a circuit.
October 8, 2025 at 12:45 PM
Finally getting the #halloween decor sorted...
October 8, 2025 at 11:53 AM
It's *my* car now, buddy...

(Yes, this is an invasive #brown #anole #lizard, and there's a constant back and forth war between them and the native green anoles)
October 6, 2025 at 2:48 PM
Heads up for any #Google #Pixel9Pro and potentially other #Android users. The Android 16 update seems to have fundamentally broken the ability for the GPS to get a lock in many situations.

Comparison between my ~20 yr old eTrex and my #P9P today - both with same view of the sky.
September 30, 2025 at 2:08 AM
Cue "dumb ways to die" music. Maybe that's not the vehicle to tailgate, buddy.
September 19, 2025 at 5:59 AM
Currently being stalked in the cutest way possible (Hopi Chipmunk)
September 5, 2025 at 12:30 AM