Ultrahuman’s absurdly expensive Home monitor doesn’t do much

Smart wearables company Ultrahuman has launched a new device that monitors changes in home environments that could impact your health. Ultrahuman says its $549 Home gadget tracks air quality, temperature, noise, light, and humidity, helping users optimize the climate within their homes to improve breathing and sleeping habits. The Ultrahuman Home resembles a Mac Mini … Read more

Edge AI is Getting Smarter: NTT’s Chip Powers 4K Video in Drones and Cars

NTT unveiled the world’s first low-power AI inference chip capable of processing 4K video in real time for autonomous vehicles and surveillance drones. Surveillance systems and autonomous vehicles are hitting a wall, literally and figuratively. This is especially true regarding real-time decision-making in power- and bandwidth-constrained environments. Today’s autonomous AI solutions are largely reliant on … Read more

Tesla just lost the head of its robotics division

The humanoid Optimus robots are supposed to be ready for mass production this year. The head of engineering for Optimus, Tesla’s humanoid robot division, left the company on Friday. Milan Kovac announced his departure on X, insisting that it “will not change a thing” about the company’s plans, which, as of March, meant building thousands … Read more

5 Open-Source Tools for Translation You can Use for Free—and Support via Kivach

Translation helps people understand each other across languages, making content, software, and knowledge more accessible worldwide. As more open-source projects grow globally, having reliable, cost-free translation tools is essential. These tools help volunteers, professionals, and everyday users contribute to and benefit from multilingual content—without needing expensive software. Whether you’re translating software strings, documents, or websites, … Read more

How We Cut Chat UI Frame Time by 8% with One Jetpack Compose Optimization

Introduction Smooth scrolling is critical for chat apps – lag or stutter can severely impact user satisfaction and retention. Chat interfaces face unique challenges due to dynamic, high-density content like text bubbles, images, emojis, and timestamps. Our team recently encountered a subtle but challenging requirement while working on our chat implementation: dynamically positioning timestamps inline … Read more

Misusing HTTP Status Codes Wrecks Your API Monitoring and Client Logic

When your API says “Everything is fine!” but returns errors TL;DR: Returning a successful HTTP status when the actual result contains an error confuses the API consumers. Problems 😔 Status code confusion Debugging difficulty Client error handling API contract violation Human text parsing instead of code checking Inconsistent behavior The Least surprise principle violation Solutions … Read more

Machine Learning for the Birds: Building Your Own Bird Vocalization Classifier

Introduction Scientists use automated systems to study large ecosystems. In the case of forest and jungle areas, autonomous recording units (ARUs) are used to record audio which can be used to help identify different species of animals and insects. This information can be used to develop a better understanding of the distribution of species within … Read more

This Open Source Tool Could Save Your Data Team Hundreds of Hours

CocoIndex supports Qdrant natively – the integration features a high performance Rust stack with incremental processing end to end for scale and data freshness. 🎉 We just rolled out our latest change that handles automatic target schema setup with Qdrant from CocoIndex indexing flow. That means, developers don’t need to do any schema setup – including … Read more

Building a Scalable Architecture with MERN Stack

Table of Contents Introduction → Why Scalability Matters in Modern Applications Understanding the MERN Stack → A Quick Breakdown of MongoDB, Express, React, Node.js Core Principles of Scalable Architecture → Keep it Simple → Make it Modular → Plan for Growth, Not Perfection Designing the Backend for Scale → Structuring Your Node.js + Express API … Read more

A Conversation with Naman Ajmera, the Quiet Architect of Property-Integrated EV Sharing

Envoy Mobility’s senior product manager explains why spreadsheets still matter, how he migrated identity checks in a single frantic week, and what comes next for “EV-as-an-amenity.” Setting the Stage Before the pandemic, Naman Ajmera was hired at Envoy Mobility to comb through usage logs and figure out why some electric cars sat idle while others … Read more

The TechBeat: How Scientists Turned the World’s Problems into Games with Reinforcement Learning (6/9/2025)

How are you, hacker? 🪐Want to know what’s trending right now?: The Techbeat by HackerNoon has got you covered with fresh content from our trending stories of the day! Set email preference here. ## The Difference Between Early-Stage Theater and Traction By @drewchapin [ 2 Min read ] A former founder reflects on how fake … Read more