Wrote more #openEMS documentation, now playing the role of the project historian. The little-known history on the endless attempts to make simulation easier, each time with the creation, abandoning, and recreation of third-party tools. #electronics

Just simulated a microstrip transmission line with a gap on the ground plane as an ultra-wideband antenna in FDTD. Its radiation efficiency increased from 1.6% to 8.3%. It's why you shouldn't do this... Transmit into the load, not into free space! #electronics

Chris (@stoneymonster) and Elecia (@logicalelegance) are diving into the dazzling world of electronic costumery with Janet Hansen (@flashingjanet).

From illuminated fashion to the art behind wearable electronics, Janet shares her journey into professional costumery and what it means to merge creativity with tech.

Join the conversation here: https://embedded.fm/episodes/499

Here's Janet’s take on using wireless controls in her costumes:

Textures a Segrate in Musica
12 aprile 2025
Grazie a Raffaele Bertolini e ad Anna Gemelli per l’organizzazione

Tomorrow is the day! Come hang out and learn about writing device drivers in #Zephyr. Even if you don't have hardware, you can still follow along. And yes, the webinar will be recorded.

https://event.on24.com/wcc/r/4870160/B0654D058D6BC12D5A08B9607370682A?partnerref=sh3

Can someone tell me if there's a fix for this weird phenomena with metal-case laptops (could be magnesium, dunno) where, when connected to a charger, the device got this weird "haptic humming" to it when touched? Not sure how to describe it… it doesn't seem like static electricity (which would be way worse, obviously), but like the metal vibrates if you move your skin over it. Only happens if it's connected to the charger, I noticed this with different devices & chargers.
#computer #electronics

Wrote more documentation for #openEMS. Lumped elements pitfalls. #electronics

Janet Hansen ( @flashingjanet ) joins us to talk about professional costumery(with electronics) and becoming an artist.

You can read the show transcript here: https://embedded.fm/transcripts/499.

Feel free to share your favorite quotes!

Thank you to Mouser Electronics for sponsoring the show.

Chris( @stoneymonster ) and Elecia( @logicalelegance ) are joined by Janet Hansen( @flashingjanet ) to discuss the world of professional costumery (with electronics) and becoming an artist.

Join them here: https://embedded.fm/episodes/499.

Thank you to Mouser Electronics for sponsoring the show!

EDIT: we put the "30mm or so of copper" back on (which I had pegged as bluetooth ant) and GPS works now.

Oh #electronics #lazyweb, I have an #askfedi - I'm looking at a garmin gps watch (instinct 2s) it's not getting GPS. We think the GPS antenna has been damaged, thing is I'm not even sure which part is the GPS antenna. There's a couple of things that look like antennas put they're just 30mm or so of copper. I thought a gps antenna hadda be more complicated than that?. Anyone know of a teardown article or vid on garmins, or some tech doco?

@classicalmusic
@contemporarymusic
@womencomposers

#BrigittaMuntendorf b. 1982

'Trilogie für Zwei Flügel

I. Key of Presence
II. Kreisincrease
III. Key of Absence

#SyntagmaPianoDuo -
#CarolinaSantiago & #FranciscoMartí

#ÁngelFaraldo #Electronics

#musik #music #musique #musica #Muntendorf
#contemporarymusic #womencomposers #classicalmusic

https://www.youtube.com/watch?v=4xVtjphFy_s

My head hurts.
I just realized that you can build filters for radio out of knotted wire. And you can directionally and phase-tune elements that way too. Like... part of me knew that, had seen that when building radios before - that you don't actually need a core material (other than air or fr4 or whatever) for inductance and reactance to happen. That you can etch filters just by shaping copper in circuit boards - and you can also build complex capacitors with just multi-layer circuit boards. And like... yagi and j-pole and phased array and hoop antennas do work quite well.

But then I was playing with tying some rope, found a pretty knot and started thinking about chirality of knots tied in-place on multiple strands. And somehow ended up here. Thinking about uhf and microwave band tuning stuff, but built big enough for hf problems.

My mind it wanders. too boldly by far.
#hamRadio #theFoundry #electronics

Btw tried this Stannol SnCu0,7NiGe solder, as NiGe is supposed to flow almost as well as proper leaded stuff, and it did. But apparently the Kristall 600 flux used in this did not wet stuff as well as it could.
And the joints were not shiny :(

Or maybe it's because it's Stannol.

Done making a few reference designs for an I2C and power over RJ45/twisted pair daisy chaining system (similar to the SparkFun QwiicBus but hopefully a little cheaper as I'm building it myself), just need to order the boards and see if it blows up, I've done work adding load switching and TVS diodes (following helpful pointers by @gsuberland ) which I've never worked with before so I'm quite scared I've messed this up a little if anyone can look over and advise

https://github.com/jasonalexander-ja/PicoChain

I'm repurposing a USB endoscope I had sitting around. It's now a workbench microscope, strapped to a 3D-printed arm. I'm hoping this will reduce some eye strain from messing with all these fiddly little bits and pieces. #3dPrinting #3dDesign #electronics #ScribesAndMakers

Still tweaking the #openEMS documentation. Physicists and engineers run out of variables be like... #electronics

Do people just not use PLD or CPLDs anymore? I'm working on a project that they'd be kinda perfect for, but it seems like it's kind of a backwater. And, if people are still using them, what are the best (if there are any at all) open source toolchains?

Thanks!
(Boosts welcome)

Which hand do you hold your soldering iron with while soldering?

#TodayInHistory 1965 - Electronics magazine publishes an article by Gordon Moore, head of research and development for Fairchild Semiconductor, on the future of semiconductor components. Moore predicts that transistor density on integrated circuits would double every 12 months for the next ten years. This prediction will become known as Moore's law.