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Taking my induction loop receiver out with headphones today to explore the electromagnetic world.
It’s a device that translates magnetic fields directly to audio frequency. This is one I redesigned from an old Silicon Chip magazine schematic. Nominally it’s for testing induction hearing assistance loops, but the “interference” you get is itself really interesting! #tinkering
Photo of my hand holding a 3D printed purple box on a bus. A headphone cable is coming out the top.

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So far I’ve heard:
- lots of heavy 50hz hum, from both overhead wires and buried high-current feeder cables near my place.
- the noise from the alternator on this bus commutating, which is a whine that changes frequency with the engine RPM!
- the noise of the bus aircon compressor.
- at least five different bands and/or modulations of my phone’s radios.
- the BLE on my smartwatch
- some kind of underground telecoms?
- traffic light comms
- traffic light pedestrian beeper
- outdoor TVs
- outdoor LED drivers
- 1500V catenary noise
- train regenerative braking
- train acceleration PWM including changing frequency with acceleration for efficiency
- ooo, diesel-electric XPT making a much lower frequency than 50hz, that was interesting
Now I’m on a Waratah train (newest generation) and the difference in tone of the electric traction drive is very cool! Clearly a different type of traction to the Millennium and Oscar sets that I listened to before in passing. This is much more sinusoidal, with a few different “octaves” with harmonics varying in strength depending on the torque, seemingly more so than the total frequency ascending and descending. Also the regen braking seems to have much more variability than the previous ones.

Also of course, these ones have actual hearing loop announcement system so occasionally I’m loudly hit by clear audio announcements because I’ve got the gain so high
Haha, I can hear my phone noise when I hit “post toot”
If anyone wants one of these listeners. I will send you one for what it cost to make (about AU$30) plus postage! Or less if that would be prohibitive for you!
I got a bunch made by JLC assembly service, and I really don’t need them all. Please let me know!
When I pass signal boxes there’s a funky high pitched warble. It might be something to do with continuous block occupation detection which I believe is in this section of rail, where different audio frequencies are injected across the rails at different locations and the block occupation (where a train is) can be detected by band pass filter on the given frequency. Otherwise I don’t know what it would be.

Mike, First of His Name reshared this.

For anyone interested in my Hearing Loop Receiver project, and maybe desiging or making their own, I've finally uploaded the schematic, board and associated files here: https://gitea.s0.is/s0/Hearing_Loop_Receiver
#tinkering
It's a great idea! :blobcataww:
Have you ever tried it on an electric car? I'd be curious to know the electromagnetic level inside

Fabio reshared this.


If you get the intonation just right, and tilt your head at the correct angle, when you say "Let me change into something more comfortable", you turn into a cat for a few hours.
Not a lot of people know that.
I would show you how, but it's time for my nap.
#MicroFiction #SmallStories #TootFic
This entry was edited (1 week ago)
👏🏼 👏🏼 👏🏼
oh shit why do I know the exact intonation for this


Task: Turn off laptop integrated display with external monitor connected and laptop lid up.

Gnome:



osx:
https://alinpanaitiu.com/blog/turn-off-macbook-display-clamshell/

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me: it doesn’t have a tail so i’m pretty sure it’s a hamster

tech support: okay fine right-click the hamster

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@Lemmy Why a link inside a button... It's... quite unusual..

And the padding on the button (which it doesn't respond to user action) makes clicking on the link a little bit more difficult than it should be.

I know.. I should have opened an issue, or better send a patch.. but I'm lazy, sorry :D


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"Non diciamo cavolate: un lampione non può spaventarti".

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Tobias Bernard reshared this.


It's aliiiiveeee! (almost) #WiP #confy #gtk4 #libadwaita

Screenshots on last post where blueprint ui files made in Workbench, this is from the wip branch. 🚧👍
@Fabio is somebody getting ready for fosdem?
@Elena ``of Valhalla'' I'm mostly trying to not delete everything at this point

Fabio reshared this.


Yet another cycling skill that has been lost over the years.
Woman practicing cutting off a head while riding a bicycle.

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@vaurorapub
If your parents didn't teach you you're too late I'm afraid
@Mjo321

@Nico Rikken Thank you. I don't think I'll manage to release the Gtk4 version for #FOSDEM, but the Gtk3 is already usable :D
Yeah, it proved to be essential in the last conference I attended. On Android I use #Giggity but #LinuxPhones are the future. So thanks for working on this! https://confy.kirgroup.net/

Ma non avevi smesso qualche settimana fa ?
Quando uno ha un art-attack che gli scappa, gli scappa!

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We're excited to announce the official launch of the #Forgejo project, a community-driven fork of #Gitea under the stewardship of @Codeberg.

Check out https://forgejo.org/2022-12-15-hello-forgejo/ to learn more, including the motivation for the fork, as well as Codeberg's announcement at https://blog.codeberg.org/codeberg-launches-forgejo.html

Come and get involved at https://codeberg.org/forgejo/forgejo or in our Matrix room https://matrix.to/#/#forgejo-chat:matrix.org . We aim to be a fully inclusive community and everyone's participation is welcomed.

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Fabio reshared this.


Oggi mi è preso lo spirito Natalizio.
Rosmarino, anice stellato e grani di pepe posizionati per creare la forma di un albero di Natale.

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Fabio reshared this.


I love how the designers of the SD card socket included a little spring capable of setting amazing speed records for data transfer across a small room.

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next: SD cards with aerodynamic properties. tiny propeller seeds of data. floating away in the wind.
reminds me I still haven't found that 400GB microSD card I've misplaced.
Still astounds me that something so small can hold that much data. #AlmostBoomerButNotQuite

Eventi Linux reshared this.


Discotux #Tux #Lego

#tux #Lego

Fabio reshared this.


Yeeeees it's all coming together

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Eventi Linux reshared this.


Coppolinux #Tux #Lego

#tux #Lego


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Una chiacchierata su: il Fediverso


Il come e il perchè del Fediverso.

Links:

San Benedetto del Tronto
https://social.as59715.net/users/cittasbt
Account sul fediverso del comune di San Benedetto del Tronto

Mastodon come alternativa a Twitter; Mastodon non è Twitter, è antivirale per costruzione; La sfida principale di ogni community.
https://blog.quintarelli.it/2022/11/mastodon-come-alternativa-a-twitter-mastodon-non-e-twitter-e-antivirale-per-costruzione-la-sfida-principale-di-ogni-community/
post di presentazione di Mastodon

ActivityPub
https://activitypub.rocks/
Il protocollo su cui si basa il Fediverso.
This entry was edited (2 months ago)

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Tuxmeleon #Tux #Lego

#tux #Lego

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Today I've been "nerd snipped" by a friend.

He had to write some excel formulas, and he was writing them in 'pseudocode' before putting the formula together, while commenting about "why I can't write formulas in a sane language".

So I've spent my evening (and part of my night) doing this:

https://git.sr.ht/~fabrixxm/formulap

Next step: a web page to run it in a browser :D


Ok, I think it's already gone too far...


Things I've done lately:
  • Dist-upgraded my VPS from Debian 10 to Debian 11
  • Updated the ansible playbook which configure my VPS almost up to date with the real state of my VPS. Things have started to diverge many moons ago. Now is quite back on track to be able to run without any unwanted side effects
  • Installed Dentrite matrix homeserver with a couple of bridges, using the aforementioned ansible playbook


Fabio reshared this.


Serata del 1 dicembre: il Fediverso


Visti gli argomenti di cronaca tecnologica delle ultime settimane :D per
la prossima serata del giovedì 1 dicembre pensavamo di proporre il tema
“il Fediverso” (ovvero i social network federati, ovvero ciò di cui fa
parte Mastodon).

Il piano è:

- 20:30 ritrovo alle 20:30 su https://meet.gl-como.it/GL-Como per
convenevoli e consueto cazzeggio
- 21:00 breve presentazione di cos'è il Fediverso
- 21:15 circa, scambio di esperienze, domande, risposte, consigli eccetera
eccetera.

Come l'altra volta, partecipando si autorizza la registrazione della
call, a partire dalle 21:00 e la sua eventuale pubblicazione.
Se volete seguire in diretta web senza entra entrare in meet:

https://live.gl-como.it/view.html#GL-Como
@Gruppo Linux Como mi hanno fatto notare che tra le schermate mostrate mancava quella importantissima che illustra il #feliverso
screenshot di una vecchia versione di mastodon con la visualizzazione del tag #CatsOfMastodon

Fabio reshared this.


Serata del 17 ottobre: self-hosting git


Come ogni giovedì di recente, anche il 17 novembre ci troveremo online
per la consueta chiaccherata serale: questa volta però abbiamo un tema:
il self-hosting git, ovvero come non dipendere da github, gitlab e altri
big per pubblicare il proprio codice.

Il piano della serata è ritrovo alle 20:30 su
https://meet.gl-como.it/GL-Como , convenevoli e breve cazzeggio e alle
21:00 precise precise si entra nel vivo e ci si scambiano esperienze e
consigli riguardo all'argomento della serata.

Non è detto che se ne faccia niente, ma partecipando si autorizza la
registrazione della call e la sua eventuale pubblicazione nel caso in
cui esca qualcosa di potenzialmente interessante anche per altri.
(ovviamente la parte cazzeggio prima delle 21 è esclusa dalla
registrazione/pubblicazione)

Fabio reshared this.


The thing about Twitter is that it really lacks a lot of the features you'd expect from a true Mastodon replacement.

For example, there's no way to edit your toots (which they, confusingly call "tweets"—let's face it, it's a bit of a silly name that's difficult to take seriously).

"Tweets" can't be covered by a content warning. There's no way to let the poster know you like their tweet without also sharing it, and no bookmark feature.

There's no way to set up your own instance, and you're basically stuck on a single instance of Twitter. That means there's no community moderators you can reach out to to quickly resolve issues. Also, you can't de-federate instances with a lot of problematic content.

It also doesn't Integrate with other fediverse platforms, and I couldn't find the option to turn the ads off.

Really, Twitter has made a good start, but it will need to add a lot of additional features before it gets to the point where it becomes a true Mastodon replacement for most users.

#twitter #mastodon #twittermigration

Content warning: profanity


Fabio reshared this.


Ogni giorno qualcuno schiaccia un pisolino. Ogni giorno milioni di pisolini muoiono così, schiacciati senza pietà.

VERGOGNA!

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Ma sono consenzienti! Giuro!
Poi, schiacciati!
Più. amorevolmente massaggiati!

Ancora con 'ste fotocopie identiche, mamma mia che roba vecchia. Noi aggiungiamo decorazioni, ghirigori, grechine, fiorellini ai vostri documenti :awesome:
@Yaku 🐗 @Fabio quanto viene la fotocopia decorata con washi tape? :D
5€. Se ci vuoi pure gli stickers fanno 10€
@fabrixxm
@Yaku 🐗 @Fabio ci devo pensare.

gli stickers hanno sopra i gattini? :D
@Yaku 🐗 @Fabio e non lo so. i gattini i dinosauri se li mangiano :D
ma come sono le fotocopie NON identiche?
sono come la settimana enigmistica, devi trovare le dieci piccole differenze. @fabrixxm

Looks like everyone agrees
Same feeling here…😔
J’aime beaucoup ce dessin 😍


Ascoltaci, o madre Sparta! Noi, i tuoi figli, andiamo a morire per la libertà.
"Si, ma non fate tardi".
Leo Ortolani, "299"


Cose da fare: provare una ricetta generata da una catena di Markov partendo da "La scienza in cucina e l'arte di mangiar bene" di Pellegrino Artusi
si batte la fiacca su questo pesce le scaglie e, lavato ed asciugato, infarinatelo tutto e mettetelo al fuoco mezz'ora prima di svenire