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Metal-Organic Frameworks, Chemistry's New Miracle Materials
LeetCode in Your Terminal
The Anti-Mac User Interface (1996)
SQLite should have (Rust-style) editions
Concurrent JavaScript: It can work (2017)
Apple’s reportedly raising the price for AppleCare Plus on Macs and iPads
An AppleCare Plus subscription for a Mac or iPad will cost more soon, with prices going up by $0.50 per month or $5 per year for new sign-ups while remaining the same for existing subscribers, according to Bloomberg's Mark Gurman. Gurman says that under the new AppleCare Plus pricing, "a plan for a new 13-inch […]
Hundreds rally at Bethesda HQ to protest Xbox layoffs, and Ars was there
Union wants to halt a "perpetual cycle" of layoffs, get back to contract bargaining.
Agentty – A drop-in alternative to claude-code, written in C++26. 11.0 MB binary
Fuse – an open source MCP/CLI tool to speed up Claude Code on C# codebases
LLM Networking with MikroTik
P2P local file transfer based on WebRTC
Valve says iFixit will keep selling Steam Deck batteries after all
Valve has been incredibly friendly to customers who need repairs - which is why it was so surprising to hear that Valve was already discontinuing the battery for the Steam Deck LCD handheld. It would have meant you could no longer just buy a battery from iFixit and install it yourself. Why would Valve stop […]
Buzz Aldrin sells famous felt-tip pen that helped launch Apollo from the Moon
While an impressive sale, the pen and switch did not break records.
The FCC's Spam Call Proposal Is Just a Data Collection Scheme
Sokoban Speedrun for RL
Rzk: A Proof Assistant for Synthetic ∞-Categories
Fleet-Scale Robotics: Reliable USB Device Binding on NVIDIA Jetson Orin
If you have ever built an autonomous mobile robot, you have likely run into the dreaded "Shuffled USB Port" problem. You boot up your robot, fire up your ROS 2 launch files, and... crash. Your LiDAR driver is trying to parse data from your IMU, and your IMU node is screaming about invalid serial frames. Because Linux assigns virtual serial paths like /dev/ttyUSB0 and /dev/ttyUSB1 based purely on which device initialized milliseconds faster, relying on default OS paths is a recipe for system instability. When you are scaling up to dozens of Jetson Orin nodes —each equipped with an RPLIDAR C1 and a Yahboom 10-axis IMU —manually hardcoding paths or writing rigid scripts on every individual machine isn't viable. Here is how production-grade robotics fleets handle plug-and-play USB binding dynamically using configuration-driven udev rules. The Core Concept: Vendor ID vs. Physical Port vs. Serials Linux's udev (device manager) allows us to dynamically create stable symbolic links (symlinks) like /dev/rplidar and /dev/imu when hardware is plugged in. How we identify those devices determines our fleet's flexibility: USB Serials: Unique to each individual chip. Highly secure, but requires registering every single replacement sensor in your codebase. Physical USB Ports ( KERNELS ): Tied to a physical slot on the carrier board. Great if you have identical sensors, but forces technicians to plug cables into highly specific, undocumented ports. Vendor ID (VID) & Product ID (PID): Identifies the USB-to-serial converter chip on the sensor board. Because the RPLIDAR C1 uses a Silicon Labs CP210x chip ( 10c4:ea60 ) and the Yahboom IMU uses a QinHeng CH340 chip ( 1a86:7523 ), they use completely distinct silicon. This means we can map them dynamically and reliably using just their VID/PID —allowing field technicians to plug them into any USB port on the Jetson without breaking the system. Step 1: The Configuration-Driven File ( devices.conf ) Hardcoding vendor rules inside shell scri
Sheetz moves 838 stores off VMware: Broadcom created “too much uncertainty"
The conveneince store chain will use StorMagic instead.
Elon Musk bought a gas turbine company
It's likely to become a direct power source for SpaceXAI's data centers.