James Newton's Avatar

James Newton

@jamesmnewton.bsky.social

Lucky to know brilliant people. Tech generalist; sees how it fits together & often what's coming. Roboticist. Educator. Wrongologist / fascinated by (bad & good) failure. Collaborator. Asteroids are our future. Escondido, CA https://github.com/JamesNewton

187 Followers  |  348 Following  |  748 Posts  |  Joined: 08.01.2025  |  2.1538

Latest posts by jamesmnewton.bsky.social on Bluesky

Let me know if you need a repair part printed. I just have a MK3 working and some PLA but if it helps, ask. I have 3 printers, and can't run two because of software; proprietary slicers. UP3D runs Win only (and I don't) and the Markforged needs a cloud slicer I can't afford.

07.12.2025 18:29 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Sad.

07.12.2025 18:25 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

He should have had a chat with United healthcare about that before he opened his yap hole.

07.12.2025 18:13 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

πŸ’― But then how can you stay right on the edge? Just burn power slamming back and forth over the edge? You original idea works to move from one edge to another, but any over or undershoot, or external force, requires two edges to bounce between. Needs high res encoder. See my repo.

07.12.2025 17:39 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Love it! With a fast enough encoder, it should work. The trick is that low res = time passing before you know you are off position or where you are at. So that throws off your table / calc and causes oscillation. High res = know where you are fast. That's why the hybrid encoder is so critical.

07.12.2025 06:51 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

But instead of /actually/ working on that, I'm distracting myself with a bunch of silly little side projects.
github.com/JamesNewton?...

07.12.2025 03:50 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Making a test joint to validate control loop improvement Β· Issue #9 Β· JamesNewton/HybridDiskEncoder The encoder provides a capability that I believe is not well understood in control systems. First some background: Control loops take in a commanded desired position or motion and read the current ...

Months later, still working on this:
github.com/JamesNewton/...
'same thing we do every night Pinky...'
I suck as a fabricator. LOL.

07.12.2025 03:48 β€” πŸ‘ 3    πŸ” 0    πŸ’¬ 2    πŸ“Œ 0
BIG FINDINGS on the asteroid Bennu! #space #astronomy #nasa
YouTube video by ASTRO ALEXANDRA BIG FINDINGS on the asteroid Bennu! #space #astronomy #nasa

All the signs of life found on Asteroid
youtube.com/shorts/stbcn...

05.12.2025 02:09 β€” πŸ‘ 0    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
Post image

so.... Gemini popped this up for no apparent reason this AM:
I had left the tab open overnight, and just came back to it. I had not asked any questions, or added any device to my google account. Can't find any mention in any search engine of this. I'm a bit weirded out and not sure what to do.

04.12.2025 18:07 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Just realized "Valerian and the City of a Thousand Planets" would be much better with the sound off and no captions. Guessing I can write better dialog on the fly in my head...

04.12.2025 17:26 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Solar Builder & Simulator

utterly fantastic tool for designing off grid systems! I'm SO amazed by the ease of use and "game" ethos of this:
disruptivelyuseful.github.io/simbiosis/
Source code, raise issues, help contribute, etc...
github.com/Disruptively...

03.12.2025 18:15 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Bad Horse

Hilarious:
`traceroute bad.horse`

03.12.2025 06:16 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

What does that mean exactly?

03.12.2025 00:34 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
Fishy Gravity
YouTube video by The Rest Is Science Fishy Gravity

So, cool! We can have fish in our zero g caves in asteroids.
youtube.com/shorts/I8rID...
#oyebeltalowda

29.11.2025 23:50 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
30 MPH is WILD 😳
YouTube video by Tyler Webb Shorts 30 MPH is WILD 😳

youtube.com/shorts/vzyde...

29.11.2025 22:56 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

FYI, that stuff always messes up my gut. Take a broad spectrum probiotic as you end the series to help with that. The key is the number of strains. We take "Garden of Life Probiotics" which are 15 strains and it really helps. Before that, we had a couple rounds of C. Diff and you do NOT want that.

28.11.2025 20:15 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Taxes aren't paid on profit or sales, but on income after expenses. If they show expenses, they don't pay taxes. Typically they expense investments in facilities, equipment, expansions, etc... and that brings the taxes down.

28.11.2025 20:10 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Preview
Alimenta - Wikipedia

And... Rome had welfare
en.wikipedia.org/wiki/Alimenta

28.11.2025 20:07 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

No, no, no... flamy end DOWN, not up! LOL. Fun to see when it's Russia and hopefully no one died... although if I was in charge of that program, I would stay away from windows on upper floors.

28.11.2025 20:04 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Oh that's a cool little pump! So tiny!

28.11.2025 06:10 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Happy illegal immigrant day!

27.11.2025 18:33 β€” πŸ‘ 1    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0

That sort of differential signaling is related to what my friend Hongyang did in the encoders for his Kickstarter. But he used an array of 7 hall effect sensors and computed the math.

26.11.2025 16:30 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Encoders in general are no joke. People seem to think they are easy because hardware exists, but the knowledge behind those is massive. The only thing simple is a pot; rotary or linear, and those do wear and have friction.

26.11.2025 16:26 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

So linear pot? I'm confused by the inductor. An experiment?

26.11.2025 05:44 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

I'm curious what output signal, resolution, range, etc... you need. I have some experience with encoders which are normally rotary, but there is no reason they can't be linear. The design I've worked with is VERY high precision and easy to make, but does require a uC to read.

26.11.2025 04:32 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
Pete Seggsbreth
YouTube video by Chad The Bird Pete Seggsbreth

This is completely hilarious and fun.
youtu.be/iz9m9b0LaX8

26.11.2025 03:21 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
Post image

ROFL.

24.11.2025 22:55 β€” πŸ‘ 2    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
Login β€’ Instagram Welcome back to Instagram. Sign in to check out what your friends, family & interests have been capturing & sharing around the world.

So... ok... ok... hear me out. This guy:
www.instagram.com/antikythera_...
is recreating "The Writer" automaton.
www.youtube.com/watch?v=laJX...
And MY idea is... actuate the Hideyuki Sawada vocal track from cams, in the same way!
youtu.be/F99sAApGySk
Huh? Huh!? Wouldn't that be amazing! :rofl:

24.11.2025 22:53 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Preview
Acuitas Diary #77 (October 2024) Adventures in robotics and AI on a shoestring budget. SFF Fiction and occasional video game appreciation.

Motive is so critical. The extension of goal fulfillment into motive to answer questions of why is indeed... satisfying.
writerofminds.blogspot.com/2024/10/the-...

23.11.2025 03:57 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Eh. Apples and Oranges. Starship is 4x the payload, fully reusable (New Glenn expends the 2nd stage), but less efficient to higher orbits. Yes, Starship is taking longer, but it's a MUCH bigger leap forward. Agree on the negative impact. Also Artimus is a stupid plan. Asteroids are the future.

22.11.2025 04:39 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

@jamesmnewton is following 20 prominent accounts