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.
A hobbyist detailed the construction of a homemade polarimetric synthetic aperture radar (PolSAR) mounted on a drone. Using readily available components like a software-defined radio (SDR), GPS module, and custom-designed antennas, they built a system capable of capturing radar data and processing it into PolSAR imagery. The project demonstrates the increasing accessibility of complex radar technologies, highlighting the potential for low-cost environmental monitoring and other applications. The build involved significant challenges in antenna design, data synchronization, and motion compensation, which were addressed through iterative prototyping and custom software development. The resulting system provides a unique and affordable platform for experimenting with PolSAR technology.
Hacker News users generally expressed admiration for the project's complexity and the author's ingenuity in building a polarimetric synthetic aperture radar (PolSAR) system on a drone. Several commenters questioned the legality of operating such a system without proper licensing, particularly in the US. Some discussed the potential applications of the technology, including agriculture, archaeology, and disaster relief. There was also a technical discussion about the challenges of processing PolSAR data and the limitations of the system due to the drone's platform. A few commenters shared links to similar projects or resources related to SAR technology. One commenter, claiming experience in the field, emphasized the significant processing power required for true PolSAR imaging, suggesting the project may be closer to a basic SAR implementation.
The "R1 Computer Use" document outlines strict computer usage guidelines for a specific group (likely employees). It prohibits personal use, unauthorized software installation, and accessing inappropriate content. All computer activity is subject to monitoring and logging. Users are responsible for keeping their accounts secure and reporting any suspicious activity. The policy emphasizes the importance of respecting intellectual property and adhering to licensing agreements. Deviation from these rules may result in disciplinary action.
Hacker News commenters on the "R1 Computer Use" post largely focused on the impracticality of the system for modern usage. Several pointed out the extremely slow speed and limited storage, making it unsuitable for anything beyond very basic tasks. Some appreciated the historical context and the demonstration of early computing, while others questioned the value of emulating such a limited system. The discussion also touched upon the challenges of preserving old software and hardware, with commenters noting the difficulty in finding working components and the expertise required to maintain these systems. A few expressed interest in the educational aspects, suggesting its potential use for teaching about the history of computing or demonstrating fundamental computer concepts.
Eki Bright argues for building your own internet router using commodity hardware and open-source software like OpenWrt. He highlights the benefits of increased control over network configuration, enhanced privacy by avoiding data collection from commercial routers, potential cost savings over time, and the opportunity to learn valuable networking skills. While acknowledging the higher initial time investment and technical knowledge required compared to using a pre-built router, Bright emphasizes the flexibility and power DIY routing offers for tailoring your network to your specific needs, especially for advanced users or those with privacy concerns.
HN users generally praised the author's ingenuity and the project's potential. Some questioned the practicality and cost-effectiveness of DIY routing compared to readily available solutions like Starlink or existing cellular networks, especially given the complexity and ongoing maintenance required. A few commenters pointed out potential regulatory hurdles, particularly regarding spectrum usage. Others expressed interest in the mesh networking aspects and the possibility of community-owned and operated networks. The discussion also touched upon the limitations of existing rural internet options, fueling the interest in alternative approaches like the one presented. Several users shared their own experiences with similar projects and offered technical advice, suggesting improvements and alternative technologies.
Summary of Comments ( 46 )
https://news.ycombinator.com/item?id=43255529
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.
The Hacker News post "Bayleaf · Building a low-profile wireless split keyboard" has generated a moderate number of comments, mostly focusing on the keyboard's design choices, potential improvements, and comparisons to other keyboards.
Several commenters express enthusiasm for low-profile mechanical keyboards, appreciating the Bayleaf's approach. One commenter highlights the importance of key travel in a comfortable typing experience, suggesting that low-profile keyboards often sacrifice this crucial aspect. They mention their preference for a particular low-profile keyboard with slightly more key travel than the Bayleaf appears to offer.
A thread discusses the use of Choc switches, which the Bayleaf employs. One commenter questions the longevity of these switches, expressing skepticism about their durability compared to traditional Cherry MX switches. Another commenter counters this, sharing their positive experience with Choc switches in a different keyboard, claiming they've held up well over extended use. This discussion highlights the ongoing debate around the reliability and feel of different switch types in the mechanical keyboard community.
Another commenter focuses on the aesthetics of the Bayleaf, appreciating its minimalist design and the choice of materials. They compare it favorably to other split keyboards on the market, praising the clean lines and understated look.
The wireless functionality of the Bayleaf is also a topic of conversation. One commenter raises concerns about potential latency, a common issue with wireless keyboards. They inquire about the specific technology used and the developer's experience with lag. While the developer doesn't directly address the latency question in the comments, they do engage in conversation about other design choices, explaining the reasoning behind certain decisions.
A few comments touch on the split keyboard layout and its ergonomic benefits. One user asks about the adjustability of the two halves, inquiring about the options for spacing and angling. This reflects the importance of customization for users seeking an ergonomic typing experience.
While there's no overwhelming consensus on the Bayleaf, the comments demonstrate a general interest in the project. The most compelling discussions revolve around the practicality and longevity of Choc switches, the importance of key travel in low-profile keyboards, and the balance between aesthetics and functionality in keyboard design. The comments offer a valuable glimpse into the considerations and priorities of mechanical keyboard enthusiasts.