@bornach@fosstodon.org
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bornach

@bornach@fosstodon.org

I like hackspace stuff, STEM education, discrete electronics, microcontrollers, Raspberry Pi, kinetic art, electronic music synthesis

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gadgetoid, to random
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bornach,
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@gadgetoid @notenoughtech @andypiper

[Mellow_Labs] has a stream planned for 11:00
https://www.youtube.com/live/2DycnXF6OmU

todbot, to random
@todbot@mastodon.social avatar

Finally. Finally! A toilet light with star projector.

bornach,
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@gadgetoid @geekmomprojects @todbot
Might be better if the spinning vortex of stars were projected inside the bowl?
https://en.m.wikipedia.org/wiki/Urinal_target

bornach, to modularsynth
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eniko, to random
@eniko@peoplemaking.games avatar

Have they put AI in guns yet

bornach,
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@eniko @kojack
Technically an Israeli company has already put AI on a gun and which the British are now adopting. This is an aiming system using Machine Learning and not generative AI.

https://www.bbc.co.uk/news/uk-england-essex-68484830

cymplecy, to random
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No visible here in Euxton, Lancashire - cloudy to the North

bornach,
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samim, to random
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Perspective

bornach, (edited )
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@samim
Credit the original artist, David Suter
https://www.reddit.com/r/im14andthisisdeep/comments/75el0f/i_found_the_original_highest_resolution_its_media/
I remember first seeing this in Time magazine back in the 1980s

Dtl, to random
@Dtl@mastodon.social avatar

Went somewhere dark. No aurora. Bum.

bornach,
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@Dtl
Too much light pollution near the motorway. I'd have to drive pretty far along B roads to see any aurora.

I'm just gonna wave some purple LED strips about out of envy

bornach,
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@Dtl
Somehow falls short of curing my FOMO

bornach, to retrocomputing
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This article on floppy disks still in use today features Espen Kraft who has retro synthesizers that rely on them.
https://www.bbc.com/future/article/20240510-floppy-disks-why-some-people-are-still-in-love-with-this-obsolete-computer-storage-technology

bornach, to ikea
@bornach@fosstodon.org avatar

I wonder if you can make this Ikea instrument with a dozen or so wire coat hangers
https://youtu.be/tww5IsaHe7w

NanoRaptor, to random
@NanoRaptor@bitbang.social avatar

The one true USB3 connector.

bornach,
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@colinstu @disser @NanoRaptor
That's how you know it's fake. The USB committee would not have centered the solid bit in the middle of the equilateral triangle so that only 1 out of 6 orientations actually fits

Edit: just checked Alt text. Well played!

bornach, to random
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[denha] has made a new version of his marble catapult
https://youtu.be/MHkeoV0xpSk

The mechanism is so mesmerizing (requires viewing in slo-mo) I could watch for hours. Makes me want to build my own version so I can finally put to use the bag of tiny springs which my Dad had harvested from various printers and tape players over the years

sheepfilms, to random
@sheepfilms@mastodon.social avatar

As it's been 20 years since I made the original, I thought I'd recreate my "Monitor Slapping" GIF. Except now I'm slapping myself through time....

A man sitting at a computer, being slapped by a hand coming out of the monitor. He reaches in and slaps a younger version of himself on the other side of the monitor

bornach,
@bornach@fosstodon.org avatar

@tantramar @johnefrancis @sheepfilms
...of the neutron flow?

Stranger things have happened when interacting with decades old media of yourself
https://youtu.be/XFGAQrEUaeU

ElleGray, to random
@ElleGray@mstdn.social avatar

sneaking into the movies with my outside snacks

bornach,
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bornach,
@bornach@fosstodon.org avatar

@fullfathomfive @ElleGray
I remember having one of those in the bathroom while growing up

bornach,
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@ElleGray
It was Miss Black with the Lead Pipe in the Conservatory

bornach, to instagramreality
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operational transconductance amplifiers I bought on over 6 years ago. Date code doesn't make sense given that Intersil discontinued the over a decade ago. The real chip should have a diode across pins 4 and 5. Only one chip seems to have it -- but it is reversed. The rest have resistors between pins 1 and 4, and between 4 and 5, consistent with an op amp that provides offset null pins. Pin 8 also seems to be connected. Both 1 and 8 should be NC.

bornach,
@bornach@fosstodon.org avatar

Someone has decapped one of these fake CA3080 ICs that have been selling on EBay as early as 2011.

https://huebnerie.de/2011/01/beware-of-the-fake-ca3080e/

The die mask claims to be LM4250. I already destroyed 2 of them trying to guess the pinout, but using the pinout of the LM4250 seems to work with 7 of them. They behave just like a jelly bean op amp.

bornach,
@bornach@fosstodon.org avatar

I very much doubt they are actually LM4250 ICs given the all too common practice of mislabelling cheap clones of well known op amps. [IMSAI GUY] shows a few of the die masks that have been found inside many of these fake op amps
https://youtu.be/NSgqYLLPUSs

bornach,
@bornach@fosstodon.org avatar

At least the single rail circuit works with these counterfeit chips. Maybe I'll turn them all into blinkies and Schmitt triggers.

Fake OTA chip in a solderless breadboard wired up with resistors, a capacitor and a purple LED which blinks about 1-2 times a second when powered by a 9V battery

trevorflowers, to random
@trevorflowers@machines.social avatar

I kind of love the messed up mechanisms spit out by Midjourney.
How many hairsprings and escapement wheels does this thing have?!

bornach,
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bornach,
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@trevorflowers
Training data must include watches from Aliexpress
https://youtu.be/QOdusPcfhHA

rdearman, to random
@rdearman@toot.io avatar

Random Advice: Don't text and drive; focus on the road.

bornach,
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@rdearman
Need to update the phones in this PSA

CW: depiction of graphic injury and death
https://youtu.be/R0LCmStIw9E

Lots more ways nowadays for smartphones to distract drivers that don't involve texting

bornach, to Electronics
@bornach@fosstodon.org avatar

The DC rails on this failed switching power supply from a wall wort AC adapter, were shorted together. It could be one of 4 components: 2 electrolytic capacitors, a surfacemount ceramic capacitor, or a surfacemount Schottky diode. Started desoldering each one and testing for the short. It cleared when the Schottky diode (SK26) was removed

I don't think I have a high current replacement diode in this form factor.

bornach,
@bornach@fosstodon.org avatar

Desoldered the power MOSFET (N-Channel 2N60F) which still seems to be good. Not quite logic level but I might find a use for it in a project.

One of the surface mount signal transistors might have failed. I won't bother desoldering those as I already have so many.

notenoughtech, to random
@notenoughtech@mastodon.world avatar

I had a chat with Kevin at . We looked at robots and had a giggle together. Here is a teaser from our talk.
More coming up soon on my YouTube channel
https://youtube.com/shorts/U9KZZ7_s0JM

bornach,
@bornach@fosstodon.org avatar

@notenoughtech
For a moment there I thought had already happened this year and somehow I hadn't noticed
https://youtu.be/0AIYD25Es2M
[NotEnoughTECH] finally released his video

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