Upgraded Raster Laser Projector Goes RGB
We’ve covered a scanning laser project by Ben Make’s Everything last year, and now he’s back with a significant update. [Ben]’s latest project now offers a higher resolution and RGB lasers. A couple of previous versions of the device used the same concept of a rotating segmented mirror synchronised to a pulsed laser diode to create scanlines. When projected onto a suitable surface, the distorted, pixelated characters looked quite funky, but there was clearly room for improvement.More scanlines and a faster horizontal pixel rate
The previous device used slightly inclined mirrors to deflect the beam into scanlines, with one mirror per scanline limiting the vertical resolution. To improve resolution, the mirrors were replaced with identically aligned mirrors of the type used in laser printers for horizontal scanning. An off-the-shelf laser galvo was used for vertical scanning, allowing faster scanning due to its small deflection angle. This setup is quicker than then usual vector galvo application, as the smaller movements require less time to complete. Once the resolution improvement was in hand, the controller upgrade to a Teensy 4 gave more processing bandwidth than the previous Arduino and a consequent massive improvement in image clarity.
Finally, monochrome displays don’t look anywhere near as good as an RGB setup. [Ben] utilised a dedicated RGB laser setup since he had trouble sourcing the appropriate dichroic mirrors to match available lasers. This used four lasers (with two red ones) and the correct dichroic mirrors to combine each laser source into a single beam path, which was then sent to the galvo. [Ben] tried to find a DAC solution fast enough to drive the lasers for a proper colour-mixing input but ended up shelving that idea for now and sticking with direct on-off control. This resulted in a palette of just seven colours, but that’s still a lot better than monochrome.
The project’s execution is excellent, and care was taken to make it operate outdoors with a battery. Even with appropriate safety measures, you don’t really want to play with high-intensity lasers around the house!
Here’s the previous version we covered, a neat DIY laser galvo using steppers, and a much older but very cool RGB vector projector.
youtube.com/embed/fEPicBSYeNQ?…
Thanks to [Chan] for the tip!
PODCAST GARAGEPUNK
iyezine.com/the-saint-and-allk…
The Saint and allkillersnofillers present: Adventure with the Saint Episode n° 48 The Work of Art 31
The Saint and allkillersnofillers present: Adventure with the Saint Episode n° 48 The Work of Art 31 - PODCAST The Saint and allkillersnofillers present: Adventure with the Saint Episode n° 48 The Work of Art 31 -Il Santo (In Your Eyes ezine)
FLOSS Weekly Episode 801: JBang — Not Your Parents Java Anymore
This week Jonathan Bennett and Jeff Massie chat with Max Rydahl Andersen about JBang, the cross-platform tool to run Java as a system scripting language. That’s a bit harder than it sounds, particularly to take advantage of Java’s rich debugging capabilities and the ecosystem of libraries that are available. Tune in to get the details, as well as how polyglot files are instrumental to making JBang work!
youtube.com/embed/5qTyyMyU2hQ?…
Did you know you can watch the live recording of the show Right on our YouTube Channel? Have someone you’d like us to interview? Let us know, or contact the guest and have them contact us! Take a look at the schedule here.
play.libsyn.com/embed/episode/…
Direct Download in DRM-free MP3.
If you’d rather read along, here’s the transcript for this week’s episode.
Places to follow the FLOSS Weekly Podcast:
hackaday.com/2024/09/18/floss-…
Fediforum happened this week, mozilla.social shuts down, and Mastodon announces the Fediverse Discovery Project.
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Elena Basile al TPI Fest 2024: “Nei due conflitti in corso non ci sono buoni e cattivi, anche il nemico ha le sue ragioni. A Gaza stiamo assistendo a un genocidio”
@Politica interna, europea e internazionale
“Nei due conflitti in corso non ci sono i buoni da una parte e i terroristi dall’altra, solo quando ci renderemo conto che ci sono degli opposti interessi, e che quindi bisogna trovare i compromessi giusti per una
Onu a Israele: stop a presenza illegale nei Territori palestinesi entro 12 mesi
@Notizie dall'Italia e dal mondo
La risoluzione ha ricevuto 124 voti favorevoli, 43 paesi si sono astenuti, Israele, gli Usa e altri 12 Stati hanno votato contro. L’Italia si è astenuta
L'articolo Onu a Israele: stop a presenza illegale nei Territori palestinesi entro 12 mesi
Riceviamo e pubblichiamo da Leonardo Cribio
🌍 TRE GIORNI PER LA PACE 2024 🌍
"Assange e Guerra al giornalismo"
🎤 Dibattito con i giornalisti:
Germana Leoni
Fabrizio Cassinelli
Giuliano Marrucci
Massimo Alberizzi
Alberto Negri (in collegamento)…
FREE ASSANGE Italia
Riceviamo e pubblichiamo da Leonardo Cribio 🌍 TRE GIORNI PER LA PACE 2024 🌍 "Assange e Guerra al giornalismo" 🎤 Dibattito con i giornalisti: Germana Leoni Fabrizio Cassinelli Giuliano Marrucci Massimo Alberizzi Alberto Negri (in collegamento)…Telegram
Commission ends probe of Microsoft-Inflection AI merger
The European Commission will stop looking into whether Microsoft's hiring of Inflection AI staff breached EU merger rules after seven EU countries dropped their requests for an investigation, the EU executive said in a press release on Wednesday (18 September).
Meet the Winners of the 2024 Tiny Games Contest
Over the years, we’ve figured out some pretty sure-fire ways to get hackers and makers motivated for contests. One of the best ways is to put arbitrary limits on different aspects of the project, such as how large it can be or how many power it can consume. Don’t believe us? Then just take a look at the entries of this year’s Tiny Games Contest.
Nearly 80 projects made it across the finish line this time, and our panel of judges have spent the last week or so going over each one to try and narrow it down to a handful of winners. We’ll start things off with the top three projects, each of which will be awarded a $150 gift certificate from our friends at DigiKey.
First: Sub-Surface Simon
While this contest saw a lot of excellent entries, we don’t think anyone is going to be surprised to see this one take the top spot. Earning an exceptionally rare perfect ten score from each of our judges, Sub-Surface Simon from [alnwlsn] grabbed onto the theme of this contest and ran like hell with it.
Exploiting the fact that many integrated circuits are actually far smaller than their external packages, [alnwlsn] milled away the inert plastic surrounding the DIP-14 version of the ATtiny84A, which left just enough room to install some LEDs and buttons. This means the complete game is housed within the boundaries of the chip itself — just plug it into a powered breadboard and get playing.
Second: Morse Quest
Coming in at second place is Morse Quest, from [felix]. Basically, [felix] took the classic text-based adventure game formula, and replaced the keyboard and monitor with a microswitch and an LED. Players not only need to correctly decode the flashing LED to figure out what the game is saying about their immediate environment, but they have to compose their response and key it in manually.
Always wanted to learn Morse code, but didn’t know how to get started? Well, this game probably isn’t it. While you can select the rate at which the same blinks out the game to make things a little easier on yourself, you’ll still need a pretty solid knowledge of Morse to explore very far.
Third: WS2812B Othello
Easily the most traditional game of the of the top three, this handheld Othello allows the player to challenge a computerized opponent on an 8×8 matrix of WS2812B LEDs. As the LED board is an off-the-shelf module, [Dave] was able to hide most of the main PCB’s electronics underneath it, giving the overall device a particularly clean look.
As nice as the hardware is, the software is equally impressive. Running on an 80 MHz STM32L412KBT6, [Dave] wrote the entire firmware without using any external libraries. Most of us would have been reaching for a common library just to get the hardware working, but he wrote everything from the button debounce routines to the actual logic by which the game is played.
Honorable Mentions
There’s no way we can pick just three of these incredible projects to showcase, so as usual, we have a few additional categories for entries that really stood out to the judges.
One Dimensional: For this category we wanted to get people thinking about what they could do with a common addressable LED strip, and T1Duino from [Andrea Trentini] didn’t disappoint. This large-format game re-imagines Tetris in a single dimension by focusing on the colors of the falling blocks instead of their shapes. But we’ve also got to give credit to [senily64dx], who really thumbed their nose at this one. Zero Dimensional PONG recreates the classic game with just a single LED. The players are meant to interpret the changing brightness of the LED as it moving closer or farther away from them, and time their button presses accordingly.
The Classics: This category was devoted to entries that brought back the iconic games of yesteryear, so it’s little surprise that the judges singled out this miniature Space Invaders arcade cabinet from [Nick Cranch] as a prime example. Just one classic game not enough? Then take a look at the μRetro from [bobricius]. This gorgeous handheld uses ATtiny85 cartridges that let’s you swap between a collection of arcade standards.
The Controls: Nintendo has spent the last couple of decades proving that how players interact with the hardware can be just as important as the games themselves, and these entries are no different. Salsa ONE by [Alex] is a minimalistic handheld that you play with just a single button, while Blind Maze from [penumbriel] tasks the player with navigating an invisible maze using an interface consisting of a trio of buttons and LEDs.
Pocket Arcade: Each judge agreed that, as far as being pocket-friendly, the Wibraboy was the project to beat. By repurposing the enclosure from a cheapo handheld game, [x3e] was able to give their DIY recreation a remarkably professional look. For those with even smaller pockets, the Tiny OLED by [deʃhipu] offers up classic gameplay in an exceptionally small footprint.
Fancy!: Finally, this category was devoted to the most polished and professional looking builds. Among all the projects, the LED Matrix Arcade from [Ryan Shill] may be the most attractive of the bunch. With its vibrant 32×32 LED array and walnut enclosure, it’s a build we’d be proud to have on display at home. The all-digital Mini Virtual Pinball Cabinet created by [mircemk] was also a favorite for this category, as it does an excellent job of recreating the authentic pinball look with a sideways-mounted 17 inch monitor.
Shall We Play a Game?
There’s only so many projects we can call out individually, so we strongly recommend you head over to Hackaday.io and browse all of the incredible entries into this contest. There’s some truly impressive work in there, and we’re willing to bet you’ll find something in there that will help inspire your own projects.
We’d like to thank DigiKey for helping to make this contest possible, and of course the Hackaday community for consistently rising to our latest challenge. Speaking of which, you’ve still got some time before the deadline to submit your best Simple Supercon Add-On for our latest contest.
Underwater high-tech. Fincantieri lancia il nuovo simulatore a realtà aumentata
@Notizie dall'Italia e dal mondo
[quote]Cetena, società del gruppo Fincantieri, leader nella ricerca e simulazione navale, ha sviluppato il primo simulatore avanzato che combina realtà virtuale e aumentata per la guida e la manutenzione di veicoli subacquei filoguidati (Remotely operated vehicles – Rov), destinati
Ministero dell'Istruzione
Oggi il Ministro Giuseppe Valditara ha firmato il decreto a favore di 19 nuove Fondazioni #ITSAcademy, che nel 2023 hanno avviato almeno un percorso formativo. Grazie al provvedimento riceveranno oltre 55 milioni di euro.Telegram
Airline Seats Are for Dummies
You normally don’t think a lot would go into the construction of a chair. However, when that chair is attached to a commercial jet plane, there’s a lot of technology that goes into making sure they are safe. According to a recent BBC article, testing involves crash dummies and robot arms.
Admittedly, these are first-class and business-class seats. Robots do repetitive mundane tasks like opening and closing the tray table many, many times. They also shoot the seats with crash dummies aboard at up to 16 Gs of acceleration. Just to put that into perspective, a jet pilot ejecting gets about the same amount of force. A MiG-35 pilot might experience 10 G.
We didn’t realize how big the airline seat industry is in Northern Ireland. Thompson, the company that has the lab in question, is only one of the companies in the country that builds seats. Apparently, the industry suffered from the global travel slowdown during the pandemic but is now bouncing back.
While people worry about robots taking jobs, we can’t imagine anyone wanting to spend all day returning their tray table to the upright and locked position repeatedly. We certainly don’t want to be 16 G crash dummies, either.
Crash dummies have a long history, of course. Be glad airliners don’t feature ejector seats.
M5S, pubblicati i 20 possibili temi della costituente: ci sono anche nome, simbolo e limite due mandati
@Politica interna, europea e internazionale
Sul sito del Movimento 5 Stelle è stato pubblicato l’elenco dei 20 temi che potrebbero essere discussi nell’assemblea costituente in programma a ottobre. Di questi, solo 12 saranno effettivamente oggetto di approfondimento. A selezionarli saranno, nei prossimi giorni,
Guerra di tecnologie. Droni, missili e AI nel conflitto in Medio Oriente
@Notizie dall'Italia e dal mondo
[quote]Il Medio Oriente dilaniato dalla guerra è divenuto, suo malgrado, una vetrina per l’uso di nuove tecnologie militari da parte di tutti gli attori coinvolti. Difatti non solo le Israeli Defence Forces, storicamente caratterizzate dall’impiego di tecnologie all’avanguardia nel tentativo di sopperire alle
Dal supercalcolo ai velivoli del futuro, Montrucchio spiega il cuore tecnologico di Leonardo a Torino
@Notizie dall'Italia e dal mondo
[quote]La digitalizzazione sta ridefinendo l’industria aerospaziale. Nuovi processi e strumenti, potenziati dall’intelligenza artificiale e dal supercalcolo, stanno rivoluzionando la progettazione e lo sviluppo dei velivoli moderni. In questa evoluzione, accelerata dagli
La lettera di Marina Berlusconi: “Basta con i falsi retroscena, nessuna trama contro Meloni”
@Politica interna, europea e internazionale
Marina Berlusconi smentisce pubblicamente presunte cospirazioni da parte della sua famiglia contro la presidente del Consiglio Giorgia Meloni. E nega anche che gli eredi del Cavaliere siano insoddisfatti di come Antonio Tajani sta guidando Forza Italia. La
#TuttiAScuola, riviviamo insieme la cerimonia di inaugurazione del nuovo anno scolastico che si è svolta lunedì #16settembre presso il Convitto Nazionale “Vittorio Emanuele II” di Cagliari.
🎥 Qui il video ▶ https://youtu.
Ministero dell'Istruzione
#TuttiAScuola, riviviamo insieme la cerimonia di inaugurazione del nuovo anno scolastico che si è svolta lunedì #16settembre presso il Convitto Nazionale “Vittorio Emanuele II” di Cagliari. 🎥 Qui il video ▶ https://youtu.Telegram
roma, 21 settembre, studio campo boario: presentazione del “libro della natura e del continuo”, di mario corticelli
slowforward.net/2024/09/18/rom…
un libro straordinario! non mancate!
Poliversity - Università ricerca e giornalismo reshared this.
War on terror e politica estera americana oggi. Un dibattito ampio
@Notizie dall'Italia e dal mondo
[quote]Conoscere ed analizzare il dibattito negli Stati Uniti attorno alla “War on Terror” bushiana contro il terrorismo islamico significa comprendere la postura di Washington in politica estera oggi. Inutile negare che le guerre in Iraq ed Afghanistan abbiano lasciato uno strascico di profonda divisione in seno
Vadda Ghalughara: l’Olocausto dei Sikh
[quote]Introduzione Nel cuore del XVIII secolo, il Punjab vive un periodo di profonde trasformazioni. Le pianure fertili, attraversate dai cinque fiumi che danno nome alla regione, sono il teatro di conflitti tra potenze emergenti eContinue reading
The post
PODCAST. “In Libano clima da guerra imminente”
@Notizie dall'Italia e dal mondo
Da Beirut Flavio Novara, presidente del "Comitato Per non dimenticare Sabra e Chatila", riferisce della forte preoccupazione della popolazione per il possibile attacco israeliano. Ma libanesi e profughi palestinesi sono pronti a resistere all'invasione del Paese
L'articolo PODCAST. “In Libano clima da guerra
È strage di attivisti ambientali, nel 2023 quasi 200 omicidi
@Notizie dall'Italia e dal mondo
Sempre più numerosi nel mondo gli omicidi di attivisti ambientali da parti di gang criminali e sicari al servizio di imprese locali e multinazionali. Il primato detenuto dalla Colombia, dietro Brasile e Honduras
L'articolo È strage di attivisti ambientali, nel 2023 quasi 200 omicidi proviene da Pagine Esteri.
Esplodono i cercapersone di Hezbollah, 18 morti in Libano e Siria. Israele sotto accusa
@Notizie dall'Italia e dal mondo
I dispositivi erano stati acquistati cinque mesi fa e stando alle indagini contenevano una piccola quantità di un esplosivo molto potente innescata ieri da un messaggio
L'articolo Esplodono i cercapersone di Hezbollah, 18 morti in
Il Manchester United è l’emblema del dominio neoliberale
@Notizie dall'Italia e dal mondo
Il nuovo articolo di @valori@poliversity.it
Incapace di vincere, con i bilanci in rosso da cinque anni, il club inglese risponde licenziando i lavoratori
L'articolo Il Manchester United è l’emblema del dominio neoliberale proviene da Valori.
L’ondata di incendi in Brasile farà salire il prezzo dello zucchero in tutto il mondo
@Notizie dall'Italia e dal mondo
Il nuovo articolo di @valori@poliversity.it
Il prezzo dello zucchero rischia di impennarsi a causa di una devastante ondata di incendi che ha colpito il Brasile
L'articolo L’ondata di incendi in Brasile farà salire il prezzo dello zucchero in tutto il mondo proviene valori.it/prezzo-zucchero-ince…
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Lithium-ion battery fires are dangerous, but small batteries alone don't usually cause this much damage.
Lithium-ion battery fires are dangerous, but small batteries alone donx27;t usually cause this much damage.#Lebanon #Hezbollah #Batteries #BatteryFires
Experts: Lebanon Pager Explosions Likely Not Lithium Batteries Alone
Lithium-ion battery fires are dangerous, but small batteries alone don't usually cause this much damage.Jason Koebler (404 Media)
LIBANO. Esplodono i cercapersone di Hezbollah, 9 morti e oltre 2mila feriti. Israele sotto accusa
@Notizie dall'Italia e dal mondo
I dispositivi del sistema di comunicazione indipendente usato dal movimento sciita sono esplosi nello stesso momento a Beirut e altre parti del Libano.
L'articolo LIBANO. Esplodono i cercapersone di Hezbollah, 9
Ma LOL
🤣🤣🤣
#ilpeggior governo disempre #ilpeggior premier disempre
Autonomia differenziata, il Forum DD in campo per il referendum abrogativo: “Gravi danni al Paese”
@Politica interna, europea e internazionale
La legge sull’Autonomia differenziata è fatta male, tradisce le finalità del decentramento e deresponsabilizza lo Stato centrale. Sono alcune delle motivazioni esposte nel corso dell’iniziativa “Contro l’Autonomia differenziata. Firmare oggi è
Grillo-Conte: nuovo scambio di lettere infuocate. E Raggi si smarca
@Politica interna, europea e internazionale
Si fa ogni giorno più infuocato lo scontro all’interno del Movimento 5 Stelle tra il presidente Giuseppe Conte e il garante e co-fondatore Beppe Grillo. Nelle ultime ore i due sono stati protagonisti dell’ennesimo scambio di lettere dai toni minacciosi. Tanto che il braccio di ferro
«Il piano Draghi è innestato su un modello economico che ha fallito»
@Notizie dall'Italia e dal mondo
Il nuovo articolo di @valori@poliversity.it
Intervista ad Anna Fasano, presidente di Banca Etica, sul mastodontico piano di rilancio economico presentato da Mario Draghi
L'articolo «Il piano Draghi è innestato su un modello economico che ha fallito» proviene da Valori.