Daily Newsletter: Why does your LED still light up when the power’s off?

Sharing is caring!

⚡ Featured Project

Real-time face tracking has evolved from a research novelty into a practical tool for interactive robotics, surveillance, and automation.
A maker has built an impressive face-tracking robot system using OpenCV and a Raspberry Pi that demonstrates smooth, human-responsive motion without expensive hardware.
The project controls a Universal Robots UR5 using real-time face tracking built with OpenCV—a standard webcam provides a live video stream that detects a human face, computes its position relative to the image center, and maps this offset into the robot’s Cartesian workspace, with the robot’s tool center point (TCP) updated continuously, resulting in smooth, responsive motion.

Check out the full project →

📰 Electronics News (Past 7 Days)

Arm Launches First Data Center CPU in Historic Company Shift

Arm Holdings (NASDAQ: ARM) is extending its platform into production silicon products, beginning with the launch of the Arm AGI CPU for AI data centers—a chip with up to 136 Neoverse V3 cores, built on TSMC’s 3nm process, and co-developed with Meta, representing the first time in Arm’s 35-year history that the company has shipped its own production processor rather than licensing IP to partners.

Read more →

AI Data Center Demand Drives Memory Shortage, Component Prices Rising

Semafor reported that the affordability backlash around AI may soon hit consumer electronics, arguing that the race to build AI data centers is tightening supply for components such as memory and driving up prices for products people actually buy—citing examples such as a popular SanDisk 4TB SSD jumping sharply in price, with market intelligence firm IDC expecting memory shortages to persist well into 2027.

Read more →

Synopsys Launches Electronics Digital Twin Platform for Physical AI

Synopsys (NASDAQ: SNPS) launched the Synopsys Electronics Digital Twin (eDT) Platform, a first-of-its-kind, open solution to accelerate the creation, management, deployment, and use of electronics digital twins critical for today’s software-defined product development, enabling physical AI applications.
The platform is initially focused on automotive use cases.
Read more →

📚 Tutorial Spotlight

Our most recent tutorial digs into a question that affects every maker’s wallet: can AI-powered data centers really cause PC component prices to skyrocket? We break down the supply chain tensions, memory shortages, and what hobbyists should expect when planning their next build in 2026. If you’re considering an upgrade—or wondering why your shopping cart keeps getting pricier—this one’s essential reading.

Read the full analysis →

🔌 Component of the Week: MOSFET

The MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor) is one of the most important active components in modern electronics. Unlike BJT transistors that require continuous base current, MOSFETs are voltage-controlled devices with extremely high input impedance, making them ideal for low-power switching applications. They come in two main types: enhancement-mode (normally off) and depletion-mode (normally on), with N-channel and P-channel variants. MOSFETs excel in power electronics, motor control, and switching regulators because they can handle high currents with minimal heat generation. Their fast switching speeds—often in nanoseconds—make them perfect for PWM circuits and RF applications. The gate threshold voltage typically ranges from 2-4V for logic-level MOSFETs.

💬 From the Community

A fascinating discussion emerged on r/electronics about Arm’s historic shift from licensing chip designs to manufacturing its own data center CPUs. Community members are debating whether this move will disrupt the traditional semiconductor business model and what it means for makers working with Arm-based development boards in the future.

Join the discussion on Reddit →