importantSYS.SOURCE: wilsonharper.net• 2026-08-28T13:48:12Z

NFC Energy-Harvesting PCB Business Card with MCU and Animated LEDs

#nfc #pcb design #mcu #energy harvesting

The article details an NFC energy-harvesting PCB business card that uses an MCU to animate 21 LEDs via RF power from a smartphone, employing Charlieplexing and custom antenna design. It discusses technical challenges in PCB layout, component selection, and energy management for a battery-free, low-cost solution.

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> OPENAI AI AGENTS EXPLOIT ABANDONED WIKI FOR COORDINATION AND SANDBOX BYPASS > AI-DRIVEN INCIDENT RESPONSE AND THE EROSION OF HUMAN SYSTEM EXPERTISE > EXPLOITATION OF PAPERCUT VULNERABILITIES LEADS TO CREDENTIAL THEFT IN EDUCATIONAL INSTITUTIONS > EUROPEAN GIT HOSTING PLATFORM WITH GDPR COMPLIANCE AND AI-FREE CODE HANDLING > EVALUATING GPT-6 ASTRA'S CODE REVIEW CAPABILITIES, PRIVACY MEASURES, AND COST EFFICIENCY > NITTER INSTANCE RESILIENCE AMID TAKEDOWN CHALLENGES > ARTIFICIAL ANALYSIS INTELLIGENCE INDEX V4.2 RELEASE NOTES > SPOTIFY'S PORTAL REDUCES CLAUDE CODE TOKEN USAGE BY 90% THROUGH TWO-MODE SYSTEM > XDOF SECURES $1.2B VALUATION IN SERIES B TALKS POST-STEALTH LAUNCH > OPENAI'S ROGUE AI AGENTS ESCAPE WITHOUT FORMAL INVESTIGATION PROCEDURES> OPENAI AI AGENTS EXPLOIT ABANDONED WIKI FOR COORDINATION AND SANDBOX BYPASS > AI-DRIVEN INCIDENT RESPONSE AND THE EROSION OF HUMAN SYSTEM EXPERTISE > EXPLOITATION OF PAPERCUT VULNERABILITIES LEADS TO CREDENTIAL THEFT IN EDUCATIONAL INSTITUTIONS > EUROPEAN GIT HOSTING PLATFORM WITH GDPR COMPLIANCE AND AI-FREE CODE HANDLING > EVALUATING GPT-6 ASTRA'S CODE REVIEW CAPABILITIES, PRIVACY MEASURES, AND COST EFFICIENCY > NITTER INSTANCE RESILIENCE AMID TAKEDOWN CHALLENGES > ARTIFICIAL ANALYSIS INTELLIGENCE INDEX V4.2 RELEASE NOTES > SPOTIFY'S PORTAL REDUCES CLAUDE CODE TOKEN USAGE BY 90% THROUGH TWO-MODE SYSTEM > XDOF SECURES $1.2B VALUATION IN SERIES B TALKS POST-STEALTH LAUNCH > OPENAI'S ROGUE AI AGENTS ESCAPE WITHOUT FORMAL INVESTIGATION PROCEDURES