Keenan Johnson

Keenan Johnson

@keenanjohnson.com

Freelance Human. Founded some hardware startups. Loves making things. https://www.keenanjohnson.com/

275 followers492 following576 posts

If I knew that people on the internet would immediately build a robot to live stream folding my foldable phone until it breaks, I certainly would not have the guts to release such a folding device.

I have always been a bit of a mechanical pencil nerd and was just gifted this Uni pencil that has something called the Kuru Toga Engine. Japanese companies really have over the top branding figured out.

Really strongly considering writing a book or something about what things machine learning / AI is good at in robotics / science and what things it is not good at. There seems to be a lot of misunderstanding amongst the people on this topic.

Finally got one of those Santa Cruz shirts to wear around europe on my last trip to california. Excited to wear it and not feel like the most vanilla poser haha

Literally had to explain to someone that there isn’t really a good way to just yeet a 240 volt circuit board out and see if it works because of you know death as a possible failure mode

Update on my mobile electronics lab plan. I decided I could probably fit everything critical in a small hard case like this. I got two camera accessory padded bags that fit in them pretty well.

Ideally I would have like some sort of rigid structure with compartments and some fold out mechanism, but you know incremental improvement

Nothing more weird than seeing the lead singer of what you assumed was a successful old band on linkedin with the headline: Writer, Musicker, Performer, Executive Thinker

Was passing by Drury Lane in London and asked partner is they knew the Muffin Man. They looked at me like I was insane. I’m starting to realize that the point of the rhyme is that really not everyone does know the muffin man.

Got this little stack of super portable power supplies and electronic loads for a project. They been floating around my internet for a while but finally had a project that needed them.

My main premise is that most engineering teams don’t actually want to be good, but some do and I love helping them. I do a lot of coaching / mentoring / consulting on that and I love it. If I was better at marketing myself maybe I could just do speaking / do that full time.

One day I hope that I'll be able to just work on whatever I want and create things that are useful or needed, but would never get built because capitalism.

Had a meeting today where someone validated and then talked about the next steps for an idea I've been working on for over five years. It's taken a long time to find the right fit, but some ideas just take that long.

So many really good technology people just spend all their time shooting down ideas rather than trying to reframe them into something that is feasible or useful.

It's not real cad if yu don't spend time spinning it around. This board is a bit goody as it uses huge connectors to ensure it can be hand soldered and is very high current.

I need access asap to whatever that blue tool is.

CERN@cern.bsky.social

The disconnection of the LHC has begun 🧲 Work has begun to disconnect the focusing magnets on either side of the @atlasexperiment.bsky.social and @cmsexperiment.bsky.social, a key step on the road to the #HiLumiLHC. Read more about it: home.cern/the-disconne...

I’ll be impressed with new software tools when this class of bug is fully solved and no one thinks of it anymore haha

Baldur Bjarnason@baldurbjarnason.com

“Flight chaos for hundreds of thousands was caused in ‘millisecond’ by software error” https://www.theguardian.com/world/2026/sep/18/flight-chaos-affecting-hundreds-of-thousands-caused-in-millisecond-by-software-error-uk

Had to call a customer support. Got passed between three separate AI support bots which had to interact with in different ways (voice, numeric entry, and then voice again). They each had unique hold music. This is a new kind of support hell.

My main technical niche seems to now be helping out robotics and sensing teams that have raised a lot of money, built a prototype and have not a lot of ideas how to make it reliable next.

Is it possible to create something of a mobile electronics lab? With a o-scope, e-load, soldering stuff, power supply etc to bring around to client sites for board bring up etc? What’s the best way?

I know a lot of people in the construction industry like this packout crates that can stack / unstack etc. I am currently thinking of something similiar. These are strong enough to protect a o-scope / some other somewhat fragile stuff and be easy enough to take around to client sites. etc