Researchers have built a 32-bit RISC-V processor using a monolayer of molybdenum disulfide (MoS₂), a two-dimensional semiconductor. This achievement demonstrates the potential of 2D materials for creating extremely thin and energy-efficient transistors, pushing the boundaries of Moore's Law. While slower and larger than state-of-the-art silicon chips, this prototype represents a significant step towards practical applications of 2D semiconductors in computing. The processor, dubbed RV16XNano, successfully executed instructions and represents a promising foundation for future development of more complex and powerful 2D-material-based circuits.
Clawtype version 2.1 is a compact, one-handed input device combining a chorded keyboard and mouse. Using only five keys, it allows for typing, mouse movement, clicking, scrolling, and modifiers like shift and control. The device connects via USB and its small size makes it portable and suitable for use in confined spaces. The creator demonstrates its functionality in a video, showcasing text entry and mouse control, highlighting its potential for efficient one-handed computing.
Commenters on Hacker News generally expressed interest in the Clawtype keyboard, praising its compact design and potential for ergonomic benefits, especially for those with limited desk space or RSI concerns. Several questioned the practicality and learning curve, wondering about its speed compared to traditional keyboards and the difficulty of mastering the chords. Some offered suggestions for improvement, like adding a wrist rest or thumb cluster, while others shared experiences with similar one-handed keyboards, highlighting the tradeoffs between portability and typing proficiency. A few users requested information on key remapping and software customization options. Overall, the response was a mix of curiosity, cautious optimism, and practical considerations regarding the device's usability.
This blog post chronicles a personal project to build a functioning 8-bit computer from scratch, entirely with discrete logic gates. Rather than using a pre-designed CPU, the author meticulously designs and implements each component, including the ALU, registers, RAM, and control unit. The project uses simple breadboards and readily available 74LS series chips to build the hardware, and a custom assembly language and assembler are developed for programming. The post details the design process, challenges faced, and ultimately demonstrates the computer running simple programs, highlighting the fundamental principles of computer architecture through a hands-on approach.
HN commenters discuss the educational value and enjoyment of Ben Eater's 8-bit computer project. Several praise the clear explanations and well-structured approach, making complex concepts accessible. Some share their own experiences building the computer, highlighting the satisfaction of seeing it work and the deeper understanding of computer architecture it provides. Others discuss potential expansions and modifications, like adding a hard drive or exploring different instruction sets. A few commenters mention alternative or similar projects, such as Nand2Tetris and building a CPU in Logisim. There's a general consensus that the project is a valuable learning experience for anyone interested in computer hardware.
Real Time Chess is a physical chessboard that eliminates the traditional turn-based structure. Pieces can be moved at any time, introducing a new layer of strategic complexity involving quick reactions, interruptions, and anticipating your opponent's moves in real-time. The board uses RFID tags in the pieces and Hall effect sensors under the board squares to track piece positions and movement, updating a digital display with the current game state. This allows for a dynamic and fast-paced chess experience where planning and execution happen concurrently.
HN commenters were generally impressed with the project, praising the technical execution and innovative concept of real-time chess. Some debated the strategic depth compared to traditional turn-based chess, with some suggesting it might devolve into a speed contest. Others discussed potential rule modifications, like piece capture delays or move cooldowns, to add more strategic elements. The creator's responsiveness to comments and willingness to incorporate feedback was also positively received, with several users offering specific suggestions for improvements and future development. A few commenters expressed skepticism about its long-term appeal, but the overall sentiment was one of enthusiastic curiosity and appreciation for the project's novelty.
This report presents compact models for advanced transistors like FinFETs and gate-all-around (GAA) devices, focusing on improving accuracy and physical interpretability while maintaining computational efficiency. It explores incorporating non-quasi-static effects, crucial for high-frequency operation, into the surface-potential-based models. The work details advanced methods for modeling short-channel effects, temperature dependence, and variability, leading to more predictive simulations. Ultimately, the report provides a framework for developing compact models suitable for circuit design and analysis of modern integrated circuits with these complex transistor structures.
HN users discuss the challenges of creating compact models for advanced transistors, highlighting the increasing complexity and the difficulty of balancing accuracy, computational cost, and physical interpretability. Some commenters note the shift towards machine learning-based models as a potential solution, albeit with concerns about their "black box" nature and lack of physical insight. Others emphasize the enduring need for physics-based models, especially for understanding device behavior and circuit design. The limitations of current industry-standard models like BSIM are also acknowledged, alongside the difficulty of validating models against real-world silicon behavior. Several users appreciate the shared resource and express interest in the historical context of model development.
Researchers have created remarkably thin films of molybdenum disulfide (MoS₂) that exhibit significantly better electrical conductivity than conventional copper films of the same thickness. This enhanced conductivity is attributed to defects within the MoS₂ lattice, specifically sulfur vacancies, which create paths for electrons to flow more freely. These ultrathin films, potentially just three atoms thick, could revolutionize electronics by enabling smaller, faster, and more energy-efficient devices. This advancement represents a significant step towards overcoming the limitations of copper interconnects in advanced chip designs.
HN commenters discuss the surprising finding that thinner films conduct better than bulk copper, expressing skepticism and exploring potential explanations. Some suggest the improved conductivity might be due to reduced grain boundaries in the thin films, allowing electrons to flow more freely. Others question the practicality due to current-carrying capacity limitations and heat dissipation issues. Several users highlight the importance of considering the full context of the research, including the specific materials and testing methodologies, before drawing definitive conclusions. The impact of surface scattering on conductivity is also raised, with some suggesting it becomes more dominant in thinner films, potentially counteracting the benefits of reduced grain boundaries. Finally, some commenters are curious about the potential applications of this discovery, particularly in high-frequency electronics where skin effect already limits current flow to the surface of conductors.
Someone modded a PlayStation 1 console by encasing it in a 3D-printed shell resembling a crab. Dubbed the "PlayStacean," this crustacean-inspired creation maintains full functionality while sporting articulated legs, claw-like controllers, and bulging eyestalks. The modder, known online as Emperor Yi, meticulously designed and printed the shell components, carefully integrating them with the original console hardware. The result is a quirky and playful reimagining of the classic gaming system.
Hacker News users generally found the PlayStation crustacean mod amusing and well-executed. Several commenters appreciated the craftsmanship and creativity, with one calling it "peak geek." Some discussed the practicality of the mod, noting the potential heat issues and the impracticality of actually using it. Others jokingly pondered the implications of "carcinization," referencing the evolutionary phenomenon where unrelated crustaceans evolve similar forms, and applying it to the PlayStation's transformation. A few commenters shared their own experiences modding consoles or creating unusual tech projects. The overall tone is lighthearted and appreciative of the whimsical nature of the modification.
Ken Shirriff created a USB interface for a replica of the iconic "keyset" used in Douglas Engelbart's 1968 "Mother of All Demos." This keyset, originally designed for chordal input, now sends USB keystrokes corresponding to the original chord combinations. Shirriff's project involved reverse-engineering the keyset's wiring, designing a custom circuit board to read the key combinations, and programming an ATmega32U4 microcontroller to translate the chords into USB HID keyboard signals. This allows the replica keyset, originally built by Bill Degnan, to be used with modern computers, preserving a piece of computing history.
Commenters on Hacker News largely expressed fascination with the project, connecting it to a shared nostalgia for early computing and the "Mother of All Demos." Several praised the creator's dedication and the ingenuity of using a Teensy microcontroller to emulate the historical keyset. Some discussed the technical aspects, including the challenges of replicating the original chord keyboard's behavior and the choice of using a USB interface. A few commenters reminisced about their own experiences with similar historical hardware, highlighting the significance of preserving and interacting with these pieces of computing history. There was also some discussion about the possibility of using this interface with modern emulators or virtual machines.
The Raspberry Pi RP2040 microcontroller is now available as a standalone chip, the RP2350, allowing manufacturers to integrate it into their own designs. This dual-core Cortex-M0+ processor with 264KB of SRAM is offered in two package variants: a QFN-56 and a future LGA package with stacked external flash memory. The QFN-56 is available for immediate purchase, offering a cost-effective solution for diverse embedded applications. The stacked memory variant promises simplified design and reduced board space, though pricing and availability for that package are yet to be announced.
Hacker News users generally expressed excitement about the RP2350's availability and potential, particularly its low cost and the possibilities opened by the stacked memory variant. Several commenters discussed the chip's suitability for specific applications, including robotics, industrial control, and amateur radio. Some expressed skepticism about the real-world performance impact of the stacked memory, wanting to see benchmarks. Others debated the merits of the RP2350 compared to other microcontrollers like the ESP32, highlighting trade-offs in processing power, memory, and peripheral options. A few users also mentioned challenges they've faced with Raspberry Pi availability in the past, hoping this release would be smoother.
This blog post details further investigations into tracking down the source of persistent radio frequency interference (RFI) plaguing the author's software defined radio (SDR) setup. Having previously eliminated numerous potential culprits, the author focuses on isolating the signal to his house and pinpointing the frequency range using an RTL-SDR dongle and various software tools. Through meticulous testing and analysis, he narrows down the likely source to a neighbor's solar panel system, specifically the micro-inverters responsible for converting DC to AC power. The post highlights the challenges of RFI identification and the effectiveness of using readily available SDR technology for such investigations.
The Hacker News comments discuss the challenges and intricacies of tracking down RFI (Radio Frequency Interference). Several users share their own experiences with RFI, including frustrating hunts for intermittent interference and the difficulties of distinguishing between true RFI and other issues like faulty hardware. One compelling comment highlights the detective work involved, describing the use of directional antennas and spectrum analyzers to pinpoint the source. Another emphasizes the surprising prevalence of RFI and its ability to manifest in unexpected ways. Several commenters appreciate the author's detailed approach and methodical documentation of the process, while others offer additional tools and techniques for RFI hunting. The overall sentiment reflects a shared understanding of the often-frustrating, but sometimes rewarding, nature of tracking down these elusive signals.
The author investigates strange, rhythmic noises emanating from a US Robotics Courier V.Everything 1670 external modem. Initially suspecting a failing capacitor, they systematically eliminated various hardware components as the source, including the power supply, cable, and phone line. Ultimately, the culprit turned out to be a loose metal plate inside the modem vibrating against the plastic casing at specific frequencies, likely due to the interplay of electrical signals and component vibrations within the device. Tightening the screws securing the plate resolved the issue. The author reflects on the challenge of diagnosing such elusive hardware problems and the satisfaction of finally pinning down the root cause.
HN commenters discuss the nostalgic appeal of the 1670 modem's sounds, with some sharing memories of troubleshooting connection problems based on the audio cues. Several delve into the technical aspects, explaining the meaning of the different handshake sounds, the negotiation process between modems, and the reasons behind the specific frequencies used. The infamous "Concord jet taking off" sound is mentioned, along with explanations for its occurrence. A few lament the loss of this auditory experience in the age of silent, high-speed internet, while others express relief at its demise. There's also discussion of specific modem brands and their characteristic sound profiles, alongside some speculation about the article author's connection issues.
Apple announced the M3 Ultra, its most powerful chip yet. Built using a second-generation 3nm process, the M3 Ultra boasts up to 32 high-performance CPU cores, up to 80 graphics cores, and a Neural Engine capable of 32 trillion operations per second. This new SoC offers a substantial performance leap over the M2 Ultra, with up to 20% faster CPU performance and up to 30% faster GPU performance. The M3 Ultra also supports up to 192GB of unified memory, enabling professionals to work with massive datasets and complex workflows. The chip is available in new Mac Studio and Mac Pro configurations.
HN commenters generally express excitement, but with caveats. Many praise the performance gains, particularly for video editing and other professional workloads. Some express concern about the price, questioning the value proposition for average users. Several discuss the continued lack of upgradability and repairability in Macs, with some arguing that this limits the lifespan and ultimate value of the machines. Others point out the increasing reliance on cloud services and subscription models that accompany Apple's hardware. A few commenters express skepticism about the claimed performance figures, awaiting independent benchmarks. There's also some discussion of the potential impact on competing hardware manufacturers, particularly Intel and AMD.
This blog post details the creation of "Bayleaf," a custom-built, low-profile, wireless split keyboard. The author prioritized a slim design, opting for Choc low-profile switches and a custom PCB to minimize thickness. They used Kailh Choc Red switches and keycaps from MBK. The keyboard halves communicate wirelessly using the nice!nano microcontroller and connect to a computer via Bluetooth. The build process involved designing the PCB, 3D printing a case, and flashing the firmware. The result is a compact and portable split keyboard tailored to the author's preferences for ergonomics and aesthetics.
Hacker News users generally expressed interest in the Bayleaf keyboard, praising its low profile and split design. Several commenters compared it favorably to other low-profile keyboards like the Keychron K1 and K3, highlighting the Bayleaf's even thinner form factor. Some questioned the key travel and overall feel, expressing a desire for more details on those aspects. Others discussed the challenges of designing and manufacturing such a slim keyboard, particularly regarding keycap compatibility and battery life. A few users also showed interest in alternative layouts and the possibility of open-sourcing the design. Several comments focused on the keyboard's aesthetics, with some finding it appealing while others considered it too plain.
This video demonstrates building a "faux infinity mirror" effect around a TV screen using recycled materials. The creator utilizes a broken LCD monitor, extracting its backlight and diffuser panel. These are then combined with a one-way mirror film applied to a picture frame and strategically placed LED strips to create the illusion of depth and infinite reflections behind the TV. The project highlights a resourceful way to enhance a standard television's aesthetic using readily available, discarded electronics.
HN commenters largely praised the ingenuity and DIY spirit of the project, with several expressing admiration for the creator's resourcefulness in using recycled materials. Some discussed the technical aspects, questioning the actual contrast ratio achieved and pointing out that "infinity contrast" is a misnomer as true black is impossible without individually controllable pixels like OLED. Others debated the practicality and image quality compared to commercially available projectors, noting potential issues with brightness and resolution. A few users shared similar DIY projection projects they had undertaken or considered. Overall, the sentiment was positive, viewing the project as a fun experiment even if not a practical replacement for a standard TV.
Kasey Hou designed and built a repairable, flatpack toaster using readily available components and off-the-shelf heating elements. The toaster's simple, modular design prioritizes ease of repair and disassembly. It features easily replaceable parts, accessible screws, and a clear labeling system. Hou's goal was to challenge the planned obsolescence prevalent in many consumer electronics by creating a toaster built to last and be easily fixed, reducing electronic waste. The project showcases a practical application of design for repairability and serves as an example of how product longevity can be intentionally designed into everyday appliances.
Commenters on Hacker News largely praised the repairable flatpack toaster project for its focus on right-to-repair and sustainability. Several expressed interest in purchasing such a product, highlighting the desire for longer-lasting appliances. Some discussed the potential challenges of sourcing parts and the complexities of achieving true repairability, while others debated the practicality of flatpacking a toaster versus other appliances. A few commenters also pointed out the existing availability of repairable toasters, suggesting the novelty lies primarily in the flatpack design and open-source nature of this project. There was some skepticism about the toaster's aesthetic appeal and the added assembly burden for consumers.
ACCESS.bus, developed by ACCESS Co., Ltd., was a short-lived attempt to create a low-cost, low-power alternative to USB in the late 1990s, primarily for connecting peripherals like keyboards and mice. Leveraging the already established I²C protocol, it aimed for simplicity and minimal hardware requirements. Despite backing from major Japanese manufacturers and some limited adoption in devices like digital cameras and PDAs, ACCESS.bus ultimately failed to gain significant traction against the rapidly growing dominance of USB, fading into obscurity by the early 2000s. Its failure was largely due to USB's broader industry support, superior performance for higher-bandwidth devices, and its eventual standardization and adoption across diverse platforms.
Several Hacker News commenters discussed ACCESS.bus's technical merits compared to USB. Some argued that while ACCESS.bus offered advantages like cheaper connectors and isochronous data transfer crucial for audio, its downfall was due to poorer marketing and industry support compared to the Intel-backed USB. Others pointed out that ACCESS.bus's use of a 7-bit addressing scheme limited it to 127 devices, a significant constraint compared to USB's much larger capacity. The conversation also touched upon the complexity of ACCESS.bus drivers and its apparent susceptibility to noise, alongside its prevalence in specific niches like high-end audio equipment in Japan. A few commenters reminisced about using ACCESS.bus devices and noted the lack of readily available information about the technology today, contributing to its "forgotten" status.
The Joule Thief circuit is a simple, self-oscillating voltage booster that allows low-voltage sources, like a nearly depleted 1.5V battery, to power devices requiring higher voltages. It uses a single transistor, a resistor, and a toroidal transformer with a feedback winding. When the circuit is energized, the transistor initially conducts, allowing current to flow through the primary winding of the transformer. This builds a magnetic field. As the current increases, the voltage across the resistor also increases, eventually turning the transistor off. The collapsing magnetic field in the transformer induces a voltage in the secondary winding, which, combined with the remaining battery voltage, creates a high voltage pulse suitable for driving an LED or other small load. The feedback winding further reinforces this process, ensuring oscillation and efficient energy extraction from the battery.
Hacker News users discuss the Joule Thief circuit's simplicity and cleverness, highlighting its ability to extract power from nearly depleted batteries. Some debate the origin of the name, suggesting it's not about stealing energy but efficiently using what's available. Several commenters note the circuit's educational value for understanding inductors, transformers, and oscillators. Practical applications are also mentioned, including using Joule Thieves to power LEDs and as voltage boosters. There's a cautionary note about potential hazards like high-voltage spikes and flickering LEDs, depending on the implementation. Finally, some commenters offer variations on the circuit, such as using MOSFETs instead of bipolar transistors, and discuss its limitations with different battery chemistries.
Researchers at the National University of Singapore have developed a new battery-free technology that can power devices using ambient radio frequency (RF) signals like Wi-Fi and cellular transmissions. This system utilizes a compact antenna and an innovative matching network to efficiently harvest RF energy and convert it to usable direct current power, capable of powering small electronics and sensors. This breakthrough has the potential to eliminate the need for batteries in various Internet of Things (IoT) devices, promoting sustainability and reducing electronic waste.
Hacker News commenters discuss the potential and limitations of the battery-free technology. Some express skepticism about the practicality of powering larger devices, highlighting the low power output and the dependence on strong ambient RF signals. Others are more optimistic, suggesting niche applications like sensors and IoT devices, especially in environments with consistent RF sources. The discussion also touches on the security implications of devices relying on potentially manipulable RF signals, as well as the possibility of interference with existing radio communication. Several users question the novelty of the technology, pointing to existing energy harvesting techniques. Finally, some commenters raise concerns about the accuracy and hype often surrounding university press releases on scientific breakthroughs.
The TinyTen is a compact, highly portable, and experimental high-frequency (HF) transceiver built around a low-power DSP. It utilizes direct digital synthesis (DDS) for both transmit and receive, covering 160 through 10 meters, with a maximum output power of 1W. The design prioritizes simplicity and small size, featuring a minimalist user interface with a single rotary encoder and a small LCD display. It requires an external computer for initial configuration and incorporates readily available components for easier construction by amateur radio enthusiasts. Despite its experimental nature, the TinyTen aims to deliver a functional and portable HF experience.
Hacker News users discuss the TinyTen transceiver with interest, focusing on its impressive DSP capabilities and small size. Several commenters express admiration for the project's ingenuity and the author's clear explanations. Some discuss the trade-offs of DSP-based radios, noting potential performance limitations compared to traditional analog designs, particularly regarding dynamic range and strong signal handling. Others are curious about the specifics of its DSP implementation and the choice of components. A few share personal experiences with similar projects and offer suggestions for improvements or alternative approaches. The overall sentiment is positive, with many praising the project as a fascinating example of modern radio design.
This blog post details how to create a simple WAV file audio player using a Raspberry Pi Pico and a VS1053B audio decoder chip. The author outlines the hardware connections, provides the necessary MicroPython code, and explains the process of converting WAV files to a suitable format for the VS1053B using a provided Python script. The code initializes the SPI bus, sets up communication with the VS1053B, and then reads and sends the WAV file data to the decoder for playback. The project offers a straightforward method for adding audio capabilities to Pico projects.
Hacker News users discussed the practicality and limitations of the Raspberry Pi Pico as an audio player. Several commenters pointed out the Pico's limited storage, suggesting SD card solutions or alternative microcontrollers like the ESP32 with built-in flash. Others questioned the need for code to handle WAV file parsing, advocating for simpler PCM data streaming. Some users expressed interest in using the project for specific applications like playing short notification sounds or chiptune music. The discussion also touched upon the Pico's suitability for audio synthesis and the potential of the RP2040 chip.
Berlin Swapfest is an electronics flea market held multiple times a year near Alexanderplatz, Berlin. It's a place for hobbyists, tinkerers, and professionals to buy, sell, and swap electronic components, tools, and gadgets, ranging from vintage computers and oscilloscopes to resistors and capacitors. Entrance is free for visitors. Vendors can rent tables to sell their wares, creating a vibrant marketplace for all things electronic.
Hacker News users reacted positively to the Berlin Swapfest announcement. Several expressed interest in attending or wished they could, with some lamenting the lack of similar events in their own locations (particularly in the US). Some users reminisced about past swap meets and the unique atmosphere and finds they offered. One commenter pointed out the potential benefits for hobbyists and repair enthusiasts seeking specific parts, contrasting it with the often limited and expensive options available online. The overall sentiment was one of nostalgia and appreciation for the opportunity to engage with a community of like-minded electronics enthusiasts.
GitSyncPad is a small, programmable keypad designed to streamline common Git actions. By pressing dedicated keys, users can perform tasks like adding files, committing changes, pushing to remote repositories, and pulling updates, eliminating the need for typing commands in the terminal. It's customizable, allowing users to configure key mappings for their specific workflows and integrate with various Git providers like GitHub, GitLab, and Bitbucket. The device connects via USB and aims to increase efficiency for developers who frequently interact with Git.
HN commenters generally express skepticism about the GitSyncPad's practicality. Some question the value proposition of a dedicated physical device for common Git commands, arguing that keyboard shortcuts and shell scripts are faster and more flexible. Concerns are raised about context switching and the limited functionality offered compared to a full terminal. A few express mild interest, particularly for educational or accessibility purposes, but overall the response is lukewarm, with many suggesting that the project seems like a solution in search of a problem. One commenter points out a similar existing project called Git remote.
This study demonstrates a significant advancement in magnetic random-access memory (MRAM) technology by leveraging the orbital Hall effect (OHE). Researchers fabricated a device using a topological insulator, Bi₂Se₃, as the OHE source, generating orbital currents that efficiently switch the magnetization of an adjacent ferromagnetic layer. This approach requires substantially lower current densities compared to conventional spin-orbit torque (SOT) MRAM, leading to improved energy efficiency and potentially faster switching speeds. The findings highlight the potential of OHE-based SOT-MRAM as a promising candidate for next-generation non-volatile memory applications.
Hacker News users discussed the potential impact of the research on MRAM technology, expressing excitement about its implications for lower power consumption and faster switching speeds. Some questioned the practicality due to the cryogenic temperatures required for the observed effect, while others pointed out that room-temperature operation might be achievable with further research and different materials. Several commenters delved into the technical details of the study, discussing the significance of the orbital Hall effect and its advantages over the spin Hall effect for generating spin currents. There was also discussion about the challenges of scaling this technology for mass production and the competitive landscape of next-generation memory technologies. A few users highlighted the complexity of the physics involved and the need for simplified explanations for a broader audience.
AI is designing computer chips with superior performance but bizarre architectures that defy human comprehension. These chips, created using reinforcement learning similar to game-playing AI, achieve their efficiency through unconventional layouts and connections, making them difficult for engineers to analyze or replicate using traditional design principles. While their inner workings remain a mystery, these AI-designed chips demonstrate the potential for artificial intelligence to revolutionize hardware development and surpass human capabilities in chip design.
Hacker News users discuss the LiveScience article with skepticism. Several commenters point out that the "uninterpretability" of the AI-designed chip is not unique and is a common feature of complex optimized systems, including those designed by humans. They argue that the article sensationalizes the inability to fully grasp every detail of the design process. Others question the actual performance improvement, suggesting it could be marginal and achieved through unconventional, potentially suboptimal, layouts that prioritize routing over logic. The lack of open access to the data and methodology is also criticized, hindering independent verification of the claimed advancements. Some acknowledge the potential of AI in chip design but caution against overhyping early results. Overall, the prevailing sentiment is one of cautious interest tempered by a healthy dose of critical analysis.
This webpage does not exist. I cannot provide a summary of a webpage that is not accessible to me. Please provide a valid URL or the text of the article itself.
HN commenters are generally skeptical of the iPhone 16e's value proposition. Several express disappointment that it uses the older A16 Bionic chip rather than the A17, questioning the "powerful" claim in the press release. Some see it as a cynical move by Apple to segment the market and push users towards the more expensive standard iPhone 16. The price point is also a source of contention, with many feeling it's overpriced for the offered specifications, especially compared to competing Android devices. A few commenters, however, appreciate Apple offering a smaller, more affordable option, acknowledging that not everyone needs the latest processor. The lack of a USB-C port is also criticized.
Acer CEO Jason Chen stated that US tariffs on Chinese imports have led to a 10% increase in laptop prices in the United States. Chen explained that while Acer has shifted some production to other countries like Mexico and Taiwan to mitigate the impact, these locations are more expensive than China, resulting in the price hike. He believes that the tariffs ultimately harm American consumers and hopes the situation can be resolved, potentially through regional trade agreements.
HN commenters largely discuss the dubious nature of blaming tariffs for the price increase, pointing out that Acer's profits have increased and questioning whether the tariffs are truly the primary driver. Some suggest the price hike is simply opportunistic, leveraging current economic anxieties and inflation. Others note that component shortages and general inflation likely play a larger role. A few commenters mention that Acer laptops aren't particularly desirable, potentially necessitating price adjustments due to market forces. Several also point out the self-serving nature of the CEO's statement, as it deflects blame from the company itself.
The Sony FX-300 Jackal, a portable multi-band radio released in the late 1970s, was a groundbreaking device for its time. Its innovative features included direct frequency entry, digital frequency readout, synchronous detection, and coverage of a wide range of frequencies, including shortwave, AM, and FM. While expensive, its impressive performance and compact size made it highly desirable among enthusiasts, solidifying its status as a sought-after classic among radio collectors. The post highlights the Jackal's impressive sensitivity and selectivity, making it a powerful tool for DXing (long-distance radio listening) despite certain design quirks like its somewhat fragile construction.
Hacker News users reminisced about the Sony FX-300, praising its innovative design and impact. Several commenters shared personal anecdotes of using the device, highlighting its impressive audio quality for its size and the unique experience of recording on microcassettes. Some discussed its role as a precursor to the Walkman and its influence on portable audio technology. Others corrected details in the original article, such as the availability of various accessories and the actual street price. The general sentiment was one of nostalgia and appreciation for a groundbreaking piece of technology.
Espargos is an open-source project developing a modular, expandable, and affordable WiFi sensing array based on ESP32 microcontrollers. Each node in the array passively monitors surrounding WiFi signals, and through techniques like Channel State Information (CSI) analysis, can detect subtle changes in the environment. These changes can then be interpreted for various applications like gesture recognition, presence detection, and even material identification. The project emphasizes ease of use and customization, allowing users to build arrays of varying sizes and configurations tailored to specific needs. The software platform provides tools for data collection, processing, and visualization, enabling experimentation and development of novel sensing applications using the collected WiFi data.
Hacker News users discussed the Espargos project, primarily focusing on its potential applications and limitations. Some saw promise in using it for security, like detecting intruders or monitoring elderly relatives, while others suggested applications in smart home automation or scientific research like analyzing crowd movement. Concerns were raised regarding privacy implications, the practicality of calibration, and the limited range of the ESP32's WiFi sensing. The reliance on signal strength as the primary metric was also questioned, with some suggesting incorporating time-of-flight measurements for improved accuracy. A few commenters expressed interest in the project's open-source nature and potential for customization. There was some debate on the best use cases, with some arguing its value lay more in research and experimentation than in robust, real-world applications.
The Flea-Scope is a low-cost, open-source USB oscilloscope, logic analyzer, and arbitrary waveform generator. Designed with affordability and accessibility in mind, it utilizes a Cypress FX2LP microcontroller and features a minimalist design detailed in a comprehensive, publicly available PDF. The document covers hardware schematics, firmware, software, and usage instructions, enabling users to build, modify, and understand the device completely. The Flea-Scope aims to be a practical tool for hobbyists, students, and professionals seeking a basic, yet versatile electronic test instrument.
Commenters on Hacker News generally praised the Flea-Scope for its affordability and open-source nature, finding it a compelling option for hobbyists and those needing a basic tool. Several pointed out its limitations compared to professional equipment, particularly regarding bandwidth and sample rate. Some discussed potential improvements, including using a faster microcontroller and enhancing the software. The project's use of a Cypress FX2 chip was highlighted, with some expressing nostalgia for it. A few users shared personal experiences using similar DIY oscilloscopes, and others questioned the practicality of its low bandwidth for certain applications. The overall sentiment was positive, viewing the Flea-Scope as a valuable educational tool and a testament to what can be achieved with limited resources.
Eli Lipsitz has introduced Game Bub, an open-source handheld console built around a Field-Programmable Gate Array (FPGA) designed for accurate retro game emulation. Unlike software emulation, the FPGA hardware recreates the original consoles' logic, offering cycle-accurate performance. The device features a 3.5-inch LCD, familiar gamepad controls, and a MicroSD card slot for ROMs. All design files, including the hardware schematics, FPGA code, and 3D-printable case designs, are available on GitHub, enabling others to build, modify, and improve the project. While currently focused on Game Boy, Game Boy Color, and Game Boy Advance titles, future expansion to other systems is possible.
Hacker News users discussed the Game Bub, an open-source FPGA retro emulation handheld. Several commenters expressed excitement about the project, praising its open-source nature and the potential for customization. Some questioned the choice of using an iCE40 FPGA, considering its limited resources compared to other options, particularly for more demanding systems like the PlayStation. The project's reliance on a soft CPU core for some systems also drew some skepticism about performance. Others raised concerns about battery life and the overall cost, but many remained optimistic about the Game Bub's potential, especially for simpler 8-bit and 16-bit systems. There was interest in seeing future updates and improvements to the project.
Summary of Comments ( 39 )
https://news.ycombinator.com/item?id=43621378
Hacker News users discuss the implications of a RISC-V processor built with a 2D semiconductor. Several express excitement about the potential for flexible electronics and extremely low power consumption, envisioning applications in wearables and IoT devices. Some question the practicality due to the current limitations in clock speed and memory integration, while others point out the significant achievement of creating a functional processor with this technology at all. A few commenters delve into the specifics of the fabrication process and the challenges of scaling this technology for commercial production. Concerns about the fragility of the material and the potential difficulty in handling and packaging are also raised. Overall, the sentiment leans towards cautious optimism about the long-term possibilities of 2D semiconductors in computing.
The Hacker News post "A 32-bit processor made with an atomically thin semiconductor" discussing an Ars Technica article about a RISC-V processor built using a 2D semiconductor, generated a moderate number of comments, many of which delve into the technical details and potential implications of the research.
Several commenters focused on the performance aspects. One noted the extremely low clock speed (1 kHz) and questioned the practical applications given this limitation. Another commenter built on this, explaining that the low clock speed is likely due to the high resistance of the thin semiconductor material. They further elaborated that while the transistor density could theoretically be much higher, the interconnect resistance would become a bottleneck.
The discussion also touched upon the challenges of manufacturing and scaling this technology. A commenter pointed out that creating larger, more complex chips using this 2D material would be difficult due to defects. They questioned whether it would be possible to scale this to create a commercially viable product. Another commenter highlighted the specific challenges in achieving uniformity and consistency in a large-scale manufacturing process for atomically thin materials.
The potential advantages of 2D semiconductors were also discussed. One commenter mentioned the possibility of flexible electronics, suggesting that this technology could pave the way for devices that are bendable or even foldable. Another commenter mentioned potential applications in areas where power consumption is extremely important since reducing the thickness to the atomic level can impact a device's energy requirements.
Some comments delved into the specifics of the RISC-V architecture. One commenter pointed out that while the processor is a 32-bit RISC-V design, it lacks features commonly found in modern processors, making it more of a proof-of-concept rather than a practical processor.
Finally, a few commenters expressed skepticism, suggesting that this research, while interesting, is a long way from commercial viability. They emphasized that the current limitations in performance and manufacturing make it unlikely to replace existing silicon technology in the near future.
In summary, the comments section explored the technical complexities, potential benefits, and significant challenges associated with using 2D semiconductors for processor design. While excitement was expressed for the potential of this technology, many commenters remained realistic about the long road ahead for commercialization.