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Circuit: Universal Warning Alarm
A handful of CMOS logic chips is all it takes to build this versatile warning alarm. Discover a classic 1980 Elektor design that monitors sensors and delivers fully adjustable audible alerts.
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Can a handful of transistors outperform a microcontroller? This acoustic sensor delivers reliable, fail-safe sound detection and shows how e...
Learn how to build AI powered mobile apps and IoT projects with MIT App Inventor, Raspberry Pi, Arduino, and ESP32 using visual programming.
Most remote measurement sites have no mains power and patchy coverage. A new class of industrial sensor node — certified, battery-powered, a...
