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ProgrammingDEV Community ·

Power, Grounding and Enclosure Rules for a 60 GHz Radar Module

Failed radar product tests are usually traced to the power supply, ground routing, or an enclosure placed too close to the antenna rather than the sensor itself. The 3.3 V figure on the pinout refers only to I/O logic levels, so modules must be powered from 4.5–5.5 V, with ripple held to 100 mV or less using an LDO after the switcher. Power budgets should account for current peaks, since the fall module can draw 300 mA and the sleep module needs 200 mA available. Load switching should sit in a separate power domain, joined to the module ground at a single point, and GPIO pins should drive transistor gates rather than relays or lamps directly. The housing over the antenna should be flat, non-metallic, and positioned 3–5 mm from the antenna face, with nothing metallic nearby.

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ProgrammingHacker News ·

http2shell: Newly Disclosed Vulnerability Enables Remote Code Execution in Node, Python and Other Frameworks

Aikido Security has reportedly disclosed a vulnerability dubbed http2shell that enables remote code execution. The flaw is said to affect applications built with Node, Python and other technologies. The information was shared through a social media post linked from a Hacker News discussion, which drew modest attention. Specific technical details, affected versions and mitigation steps were not available in the material provided.

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ProgrammingDEV Community ·

Free FMCSA census query surfaces newly registered trucking companies

A developer shared a method for pulling newly registered trucking companies from the FMCSA carrier census, which is published as open data on data.transportation.gov. The approach uses a SoQL query over plain HTTP, filtering active records by registration date and state, and requires no API key for light use. The author notes that the raw dataset lacks built-in deduplication, operating authority status, and normalized fields, which must be handled separately. To address these gaps, the author built a paid Apify actor that joins authority data, applies filters, avoids repeat deliveries, and exports results in JSON, CSV, or Excel. The article notes the author's bias, since they built the tool they promote.

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ProgrammingDEV Community ·

Expo Router navigation slows past 40 nested routes, with fixes for layout re-renders and focus

A team migrating a multi-tenant dashboard from React Navigation to Expo Router found a performance drop at around 42 nested routes, with animations falling from 60fps to 38fps and memory rising 140MB on Android mid-range devices. Benchmarks on a Pixel 5 and iPhone 12 using Expo SDK 52 and React Native 0.76 showed navigation time and frame drops rising sharply as route depth increased. The team attributed the problem to re-renders of the layout tree on navigation events, compounded by runtime TailwindCSS class recalculation in nested layouts. Replacing dynamic class props with static StyleSheet references cut navigation time at 50 routes from 187ms to 94ms and reduced frame drops per transition from 9 to 3. The team also found that modal routes overlaying tab navigators broke screen reader focus, which they addressed by wrapping the modal in a container with accessibilityViewIsModal.

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ProgrammingDEV Community ·

Plex Media Server flaw CVE-2026-96655 can be checked in logs for prior exploitation

Patching Plex Media Server to 1.43.3.10861 closes the SSRF in CVE-2026-96655, but it does not reveal whether the flaw was already abused. The bug allows an authenticated user to make the server fetch an attacker-chosen target via the universal transcoder endpoint. Investigators are advised to compare endpoint activity against a baseline of normal household use and to look for internal network connections from the Plex host that it would not normally make. Failed transcode sessions can serve as a weak triage signal but are not conclusive evidence. If compromise is suspected, logs and connection records should be preserved, the involved account disabled, and any exposed credentials rotated before patching.

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ProgrammingDEV Community ·

Video generation models still face a wide gap between demos and production use

Video models can produce impressive short clips in marketing demos, but production pipelines run into latency problems, weak frame-to-frame consistency, limited camera control, and mandatory brand-safety review. Treating video generation as simply a longer form of image generation tends to underestimate costs and iteration cycles. Teams that successfully ship multimodal features usually begin with narrower tasks such as understanding clips, captioning meetings, or extracting frames for search. Assisted editing, storyboards, and animatics are also more practical than generating final pixels for regulated brands. The article notes that legal and brand review often takes more time than GPU inference, and it recommends tools with controllable parameters and evaluation methods for temporal artifacts.

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ProgrammingDEV Community ·

Explainer: How IaaS, PaaS and SaaS Differ in Cloud Computing

Cloud computing lets people use computing resources over the internet rather than owning and maintaining physical hardware themselves. The article explains three common cloud service models: IaaS, PaaS, and SaaS. IaaS provides virtual servers, storage, and networking, leaving users in charge of their operating systems and applications. PaaS offers a ready-made environment for building, testing, and deploying software, so developers can focus on code instead of server management. The piece uses everyday analogies, such as renting an empty apartment or a fully equipped kitchen, to clarify how control and responsibility vary across these models.

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ProgrammingDEV Community ·

STREAM-MATE: An In-Character AI Co-Host for Twitch and YouTube Streams

STREAM-MATE is an open-source, MIT-licensed tool that acts as an in-character AI co-host for live streams on Twitch and YouTube. It handles live chat, realtime voice, and an on-screen avatar, and it checks each reply before it goes to air. The interface is available in English and Russian. The article's author says the tool reads only the data it is pointed at and sends nothing to external services. The author also cautions that its rule-based checker can produce false positives and is best used to flag candidates for rewriting rather than to grade writing.

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ProgrammingDEV Community ·

Ameobius AI launches portfolio site collecting its MCP servers, browser pipelines and audio tools

The Ameobius AI project has published a portfolio website gathering its tools in one place, including MCP servers, browser and CDP pipelines, audio and music-AI wrappers, and quality-control utilities. The site is available in Russian, English and Chinese and is hosted on GitLab Pages, with a mirror on Vercel. The author's write-up focuses less on features and more on the tool's limitations and where it fails. The checker-style tools are described as prone to false positives, meant for finding rewrite candidates rather than grading writers. The project is MIT-licensed, built on the standard library, and sends no data anywhere.

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ProgrammingDEV Community ·

Polylane: AI on-call assistant aims to cut incident MTTR from 45 to under 15 minutes

Polylane is an LLM-based on-call assistant that helps teams respond to incidents on Cloudflare faster. According to the article, the SRE team at Acme Corp reported cutting mean time to resolution for critical incidents from about 45 minutes to under 15 minutes after deploying it. The tool ingests telemetry from sources such as Datadog, Prometheus and Cloudflare logs, then proposes actions validated in a sandbox before calling the Cloudflare API. Notifications and escalations can be routed to Slack, PagerDuty and GitHub Actions, with human approval required for sensitive steps. The guide walks readers through setup, configuration and playbook testing.

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ProgrammingDEV Community ·

Haven Rehab Coach for Post-Mastectomy Patients Wins Tiger Data Award

Haven is a home rehabilitation coach designed to guide patients through shoulder exercises after breast cancer surgery, using a laptop camera and a wearable armband. The system keeps patients within movement limits set by their physical therapist and gives clinicians a detailed view of recovery between visits. The author built the backend, a Node.js and TypeScript API running on Vercel, with a time-series data layer on Tiger Cloud, Gemini-generated reports, and Auth0 sign-in. Because the armband streams arm angle data many times per second, the database schema uses hypertables, columnstore compression, and continuous aggregates to keep dashboards fast as data grows. The team's guiding principle is that deterministic code handles all safety checks while the AI only generates the wording.

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ProgrammingDEV Community ·

Polylane Launches AI On-Call Assistant for Diagnosing Cloudflare Edge Failures

Polylane, a new AI-driven on-call platform, has launched on Product Hunt to help SRE and security teams respond to Cloudflare edge failures. It uses an LLM-based engine to parse Cloudflare logs, correlate third-party telemetry, and generate remediation steps within seconds. The article is a deployment guide covering API credentials, a sample playbook, Slack and PagerDuty integration, security practices, monitoring, and GitHub Actions automation. It cites rising search interest and community discussion as signs of demand, and frames the tool as a response to fatigue and alert noise exposed by the September 2024 Cloudflare outage.

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ProgrammingDEV Community ·

Developer Builds Muffle, an Android App That Auto-Silences Phones in Mosques and Meetings

A developer was inspired to create Muffle after repeatedly seeing ringtones interrupt quiet settings such as Friday prayers at a mosque. Rather than polling GPS, which drains batteries, the app uses Google Play Services' GeofencingClient so the operating system monitors location and wakes the app only on boundary transitions. The author notes a tradeoff: developers lose direct control over polling frequency, and triggers may arrive slightly late when signals are weak. Testing also revealed that geofence reliability varies across manufacturers, with some custom power-management systems killing background services or throttling broadcasts for apps that have not been opened recently.

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ProgrammingDEV Community ·

Team Wins Grok Bot Hackathon Without Writing Code, Leads AI Round

A team entered a hackathon in which an AI agent, Grok Bot, did all the coding and documentation, with no human writing a single line. Grok Bot judged submissions in an initial AI round based on a README the team had it generate, scoring the team's Menu of the Future project 13 out of 15 and placing it first on the provisional leaderboard. The team submitted its form five minutes before the deadline, with Grok Bot filling out most fields and a team member completing the final click. During the human-judge pitch, the team's demo failed when its laptop and tablet would not display over the venue's HDMI, forcing a slides-only presentation without the live Grok Bot demo.

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ProgrammingHacker News ·

German court rules Google aerial imagery amounts to spying

A German court has characterized Google's aerial imagery as spying. The ruling addresses the company's use of photographs taken from above to map and display locations. The available source material is limited to a headline and link, so the specific details of the case, including the plaintiffs, the court's reasoning, and the timing of the decision, cannot be confirmed here. Readers seeking the full legal arguments and implications should consult the original Courthouse News report.

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ProgrammingHacker News ·

Google to Pay Households to Cut Electricity Use, Freeing Power for Its Data Centers

Google has announced a program that will pay people to reduce their electricity consumption. The stated goal is to free up grid capacity so the company's data centers can draw more power. The initiative reflects growing strain on power supplies as demand from AI and cloud computing expands. The source article, published by Computerworld, provides the details of the arrangement. The full terms and participating regions are described in that article.

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ProgrammingDEV Community ·

poolprobe: a stdlib-only doctor that health-checks OpenAI-compatible model pools

A new open-source tool called poolprobe checks every model in an OpenAI-compatible pool and labels each failure as ALIVE, TRANSIENT, CREDENTIAL, or PERMANENT. Its design prevents removal of working models, since a model is only declared dead after five independent checks agree. The project is built on the Python standard library alone and is installable via pip under the MIT license. According to the author, the tool only reads the data it is pointed at and sends nothing externally. The author also cautions that its rules can yield false positives, so it is meant to flag candidates for review rather than serve as a definitive judgment.

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ProgrammingDEV Community ·

OpenAI Replaces Live Web Access in Frontier Model Training After Security Incident

OpenAI has changed how it trains and evaluates its frontier models by removing live internet access and substituting an offline environment built from indexed and cached web content. The shift follows a September 20, 2026 incident in which an internal research model reached the live internet in a limited way because of a DNS resolver misconfiguration. The company paused frontier training and evaluations, strengthened its environment, expanded red-teaming, and resumed frontier reinforcement learning and internal inference on October 1. OpenAI says the offline setup still lets models browse, search, and use web applications without affecting external systems. It also states that the infrastructure is not fully air-gapped, instead relying on tightly controlled outbound traffic and layered containment.

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ProgrammingDEV Community ·

cfg-guard: a file lock and content-hash check for shared config files

The cfg-guard tool is presented as a guard for configuration files that many people edit. It combines flock with a content-hash compare-and-swap so that a write is refused if the underlying bytes have changed since they were read. It also uses inotify and /proc to identify which process writes to a file while bypassing the lock. The project is written in Python using only the standard library, is MIT licensed, and is installable via pip. The author notes that its rules can yield false positives, so it is intended for finding rewrite candidates rather than judging writers.

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ProgrammingDEV Community ·

Deterministic Host Leases for FastAPI Live Polls Prevent Split-Brain Reassignment

The article describes a split-brain problem in live polls where two browser clients may both believe they are the host after a disconnect. It proposes a server-side host lease with a monotonically increasing epoch so that only the current epoch can issue authority-changing commands. Host candidates are chosen from an ordered, eligibility-checked set, and reassignments are committed atomically so every worker contends on one authoritative record. Clients treat broadcasts as views of committed state rather than grants, and reconnects restore sessions without restoring authority from local state. The approach is designed to keep reassignment deterministic even when WebRTC messages arrive late, duplicated, or out of order.

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