Multiple motors or servos are the norm for drones to achieve controllable flight, but a team from MARS LAB HKU was able to a 360° lidar scanning drone with full control on just a single motor and no additional actuators. Video after the break.

The key to controllable flight is the swashplateless propeller design that we’ve seen few times, but it always required a second propeller to counteract self-rotation. In this case the team was able to make that self-rotation work for them to achieve 360° scanning with a single fixed LIDAR sensor. Self-rotation still need to be slowed was successfully done with four stationary vanes. The single rotor also means better efficiency compared to a multi-rotor with similar propeller disk area.

The LIDAR comprises a full 50% of the drones weight and provides a conical FOV out to a range of 450m. All processing happens onboard the drone, with point cloud data being processed by a LIDAR-inertial odometry framework. This allows the drone to track and plan it’s flight path while also building a 3D map of an unknown environment. This means it would be extremely useful for indoor or undergrounds environments where GPS or other positioning systems are not available.

All the design files and code for the drone is up on GitHub, and most of the electronic components are off-the-shelf. This means you can build your own, and the expensive lidar sensor is not required to get it flying. This seems like a great platform for further experimentation, and getting usable video from a normal camera would be an interesting challenge.

youtube.com/embed/lrEJnJrRJsQ?…

hackaday.com/2024/10/04/single…

Sebbene chi si occupa di intelligence delle minacce sia abbastanza preoccupato del fatto che il cybercrime stia piano piano lasciando telegram, iniziano a verificarsi i primi esodi di massa.

Telegram ha recentemente annunciato modifiche significative alla sua politica sulla privacy. Il cofondatore e amministratore delegato Pavel Durov ha dichiarato il 23 settembre 2024 che la piattaforma rafforzerà la moderazione e trasferirà determinati dati degli utenti su richiesta delle autorità.

Ora il messenger rivelerà gli indirizzi IP e i numeri di telefono degli utenti su richieste legittime. Inoltre, l’azienda si è avvalsa di un team di moderatori e di intelligenza artificiale per rimuovere i contenuti illegali. E per i reclami relativi ai contenuti vietati è stato addirittura lanciato uno speciale bot @SearchReport.

I cambiamenti sono arrivati ​​dopo che la Francia ha accusato Durov di agevolare attività illegali sulla piattaforma. È stato accusato di aver facilitato la distribuzione di materiale pedopornografico, traffico di droga e strumenti per hacker e riciclaggio di denaro.

Inoltre, Durov è stato accusato di essersi rifiutato di fornire alle autorità i dati degli utenti. Il 25 marzo 2024, secondo quanto riferito, la Francia ha emesso un mandato di arresto per Durov e suo fratello Nikolai dopo aver rifiutato di identificare uno degli utenti ricercati in relazione a un’indagine su abusi sessuali su minori. Tuttavia, Durov è ora in libertà, anche se non potrà lasciare la Francia finché le indagini non saranno completate.

Tra i cambiamenti improvvisi nelle politiche di Telegram e i maggiori sforzi per identificare gli abusi della piattaforma, i criminali informatici hanno già iniziato a discutere sulla ricerca di canali di comunicazione alternativi. Alcuni gruppi e attivisti informatici hanno apertamente annunciato il loro passaggio ad altre piattaforme come Signal, Session, Jabber e Tox. Sui forum degli hacker iniziarono ad apparire consigli sull’utilizzo di questi messenger, nonché discussioni sui loro vantaggi e svantaggi.

Sebbene Signal e Session abbiano attirato l’attenzione grazie alla loro forte attenzione alla privacy, mancano di alcune funzionalità di Telegram, comprese le funzionalità dei bot e i gruppi di grandi dimensioni.

Inoltre, queste piattaforme non forniscono un’API aperta, il che ne limita la flessibilità per i criminali informatici. Anche i servizi di messaggistica istantanea decentralizzati come Tox, Jabber e Matrix sono considerati come possibili alternative, ma hanno anche i loro limiti in termini di funzionalità e affidabilità.
Comparazione tra messanger (Fonte Intel471)
Nonostante le discussioni sul passaggio ad altre piattaforme, Telegram rimane popolare tra gli aggressori grazie al suo gran numero di utenti e alle funzionalità avanzate difficili da trovare in un unico posto. Questo è probabilmente ciò che continuerà ad attrarre i criminali informatici, ma alcuni di loro cambieranno sicuramente il messenger che utilizzano per aumentare la privacy delle loro operazioni dannose.

L'articolo I Ratti Abbandonano la Nave! Come verrà sostituito il vuoto lasciato da Telegram nel Cybercrime? proviene da il blog della sicurezza informatica.

Whether you’re a kid or a nerdy adult, you’ll probably agree that the interactive exhibitions at the museum are the best. If you happened to get down to the Oregon Science Festival in the last couple of years, you might have enjoyed “Catch The Wave!”—a public education project to teach people about electromagnets and waves. Even better, [Justin Miller] has written up how he built this exciting project.

Catch The Wave! consists of four small tabletop cabinets. Each has physical controls and a screen, and each plays its role in teaching a lesson about electromagnets and sound waves, with a context of audio recording and playback.

The first station allows the user to power up an electromagnet and interact with it using paper clips. They can also see the effect it has on a nearby compass. The second illustrates how reversing current through an electromagnet can reverse its polarity, and demonstrates this by using it to swing a pendulum. The third station then ties this to the action of a speaker, which is effectively a fancy electromagnet—and demonstrates how it creates sound waves in this way. Finally, the fourth station demonstrates the use of a microphone to record a voice, and throws in some wacky effects for good fun.

If you’ve ever tried to explain how sound is recorded and reproduced, you’d probably have loved to had tools like these to do so. We love a good educational project around these parts, too.

hackaday.com/2024/10/04/intera…

Julian Assange è intervenuto all’Assemblea Parlamentare del Consiglio d’Europa (PACE), tenutasi a Strasburgo, con le sue prime dichiarazioni da uomo libero. Una testimonianza che ha spinto la quasi totalità dei parlamentari a riconoscere Assange come prigioniero politico “Signor Presidente, stimati membri dell’Assemblea parlamentare del Consiglio d’Europa, signore e signori. […]L’esperienza dell’isolamento per anni in una […]

freeassangeitalia.it/assange-a…

I’m sitting at a table writing this in the centre of a long and cavernous industrial building, the former print works of a local newspaper, I’m surrounded by hardware and software hackers working at their laptops, around me is a bustling crowd admiring a series of large projects on tables along the walls, and the ambient sound is one of the demoscene, chiptunes, 3D-printed guitars, and improbably hurdy-gurdy music. Laser light is playing on the walls, and even though it’s quite a journey from England to get here, I’m home. This is Hackfest Enschede, a two-day event in the Eastern Dutch city which by my estimation has managed the near-impossible feat of combining the flavour of both a hacker event and a maker faire all in one, causing the two distinct crowds to come together.

The Best Of Both Worlds, In One Place

To give an idea of what’s here it’s time for a virtual trip round the hall. I’ll start with the music, aside from the demosceners there’s Printstruments with a range of 3D-printedmusical instruments, and Nerdy Gurdy, as you may have guessed, that hacker hurdy-gurdy I mentioned. This is perhaps one of few places I could have seen a spontaneous jam session featuring a 3D-printed bass and a laser-cut hurdy-gurdy. Alongside them were the Eurorack synthesisers of Sound Force, providing analogue electronic sounds aplenty.

Competing with the musicians are the sounds of 8-bit gaming, as the Home Computer Museum are here with an array of Dutch computers including the Philips range, a Tulip PC, and the super-futuristic Holborn business computer. They’re joined by Atari Invasion, and I’m as always pleased to see youngsters discovering the machines my generation had at their age, for themselves. The more hacker side of the hardware community is here in force, with the local Fablab Saxion and Tkkrlab hackerspace. The Fablab had brought along a really neat Lego assembling robot derived from a 3D printer. Then there’s badge.team showing off their electronic event badges, and the ever-enthusiastic Mitch Altman bringing his soldering workshop. This representts only a snapshot of what’s here, I’ve also seen printing (the old-fashioned kind), combat robots, dancing corn starch, Yvo de Haas‘ robot tentacles, and Ubuntu Mobile, to name but a few others.

Can We Capture This, And Bottle It?

Such an array of cool stuff is always good to see, but my take-away from this event lies not on the tables at the hall. Instead it’s in the way that here they’ve managed to capture what was great about the early maker events, the raw edge of creativity before all the STEM and webshops selling blinky LEDs moved in, and maintain an attraction for people from the hacker community. I think the key to the success lies in combining the stuff described above with a more hacker-friendly set of talks, and oddly in the venue itself. Enschede is easy to get to but not somewhere that demands premium prices on everything, so going along wasn’t the deal-breaker that a more shiny event might have been.

It’s great to see an event’s first try draw to a close with a feeling of success, and we hope there will be another Hackfest to go to in Enschede next year. But I’m more interested to see whether this event may seed others, fresh new events trying a similar formula. I hope I’ll see you there.

What have you missed on Hackaday this week? Elliot Williams and Al Williams compare notes on their favorites from the week, and you are invited. The guys may have said too much about the Supercon badge this year — listen in for a few hints about what it will be about.

For hacks, you’ll hear about scanning tunneling microscopes, power management for small Linux systems, and lots of inertial measurement units. The guys talked about a few impossible hacks for consumer electronics, from hacking a laptop, to custom cell phones.

Of course, there are plenty more long-form articles of the week, including a brief history of what can go wrong on a spacewalk and how to get the lead out (of the ground). Don’t forget to take a stab at the What’s That Sound competition and maybe score a sweet Hackaday Podcast T-shirt.

Check out the links below if you want to follow along, and as always, tell us what you think about this episode in the comments!

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Use this link to teleport a DRM-free MP3 to your location.

Where to Follow Hackaday Podcast

Places to follow Hackaday podcasts:

• iTunes
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• Check out our Libsyn landing page

Episode 291 Show Notes:

News:

• Supercon is almost here!

What’s that Sound?

• Do you know the sound? Let us know and get a chance at a coveted Hackaday Podcast T.

Interesting Hacks of the Week:

• Building A 3D Printed Scanning Tunneling Microscope
  
  • Cheap DIY Microscope Sees Individual Atoms
  • Homebrew Probe Tip Etcher Makes Amazingly Sharp Needles

  
  

• Creating Video Games With AI: A Mario Example
• Pi Zero Power Optimization Leaves No Stone Unturned
• Inside The F-4 Attitude Indicator
  
  • Retrotechtacular: Sychros Go to War and Peace

  
  

• Easily Build This IMU Array Sandbox
  
  • IMU Sensor Fusion

  
  

• Thinkpad 13 Gets NVMe Support With Three Jumpers

Quick Hacks:

• Elliot’s Picks:
  
  • MikroPhone – Open, Secure, Simple Smartphone
  • 2024 SAO Contest: We’ve Got SAOs For Your SAOs
  • Man-in-the-Middle PCB Unlocks HP Ink Cartridges

  
  

• Al’s Picks:
  
  • Blinking An LED Passively
  • 3D Printed Jellyfish Lights Up
  • Add USB-C To Your AirPods The Easy Way

  
  

Can’t-Miss Articles:

• Polaris Dawn, And The Prudence Of A Short Spacewalk
• Mining And Refining: Lead, Silver, And Zinc

hackaday.com/2024/10/04/hackad…

“Uzeda – Do it yourself” è un docufilm, realizzato dalla regista Maria Arena (e prodotto da DNA audiovisivi e dalla casa di produzione indipendente Point Nemo) che racconta la storia degli Uzeda, fondamentale alternative/math/noise rock band italiana, formatasi nel 1987, che ha tracciato il proprio percorso musicale senza scinderlo da quello umano, fortemente etico.... @Musica Agorà

iyezine.com/uzeda-arriva-nei-c…

Uzeda, arriva nei cinema il docufilm "Do it yourself"

Uzeda, arriva nei cinema il docufilm "Do it yourself" - "Uzeda - Do it yourself" è un docufilm, realizzato dalla regista Maria Arena (e prodotto da DNA audiovisivi e dalla casa di produzione indipendente Point Nemo) che racconta la storia degli Uzeda…

^{Reverend Shit-Man (In Your Eyes ezine)}

Monos : la realtà vuole però che la band nasca da una folgorazione (probabilmente non di origine divina) avuta da Mr. Bonobo e Mr. Gorilla rispettivamente alla chitarra e alla batteria. La loro prima uscita è datata 2019 mentre il nuovo album è alle porte.

@Musica Agorà

iyezine.com/monos-road-to-perv…

Monos - "Road to Perversion" e quattro chiacchiere

Monos - "Road to Perversion" e quattro chiacchiere - Monos : la realtà vuole però che la band nasca da una folgorazione (probabilmente non di origine divina) avuta da Mr. Bonobo e Mr. Gorilla rispettivamente alla chitarra e alla batteria.

^{Claudio Frandina (In Your Eyes ezine)}

I Khost sono un pianeta oscuro che vaga per lo spazio cerebrale mietendo vittime, portando con sé un rumorismo molto potente, e fatto di industrial, doom, drone, dark ambient, nosie geneticamente modificato e molto di più.
@Musica Agorà

iyezine.com/khost-many-things-…

Khost - Many Things Afflict Us Few Things Console Us

Khost - Many Things Afflict Us Few Things Console Us - I Khost sono un pianeta oscuro che vaga per lo spazio cerebrale mietendo vittime, portando con sé un rumorismo molto potente, e fatto di industrial, doom, drone, dark ambient, nosie geneticamente…

^{Massimo Argo (In Your Eyes ezine)}