An optocoupler tester is a small device that helps verify whether an optocoupler is functioning properly or has failed. In labs and repair work, optocouplers often fail without clear signs. They may ...

I had this idea of building my own bicycle lighting system totally personalized, the lights would have the exact lighting pattern I wanted and the shape I decide. That's why I started to build this ...

In this video, I'm exploring the use of Mini PIR Sensors with ESP32 with both Arduino-based projects as well as making a movement sensor for Home Assistant by using ESPHome. The sensor is quite ...

When building a radio transmitter, unless it’s a very small one indeed, there’s a need for an amplifier before the antenna.

Update: Based on wording in yesterday's Direct and press materials released since, it looks like Project Triangle Strategy's official, finalized name is.....Triangle Strategy, following in the ...

Last year, we brought you a story about the BhangmeterV2, an internet-of-things nuclear war monitor. With a cold-war-era ...

Check out the latest stories, videos, and podcasts from the week of Mar. 9, 2026. Andy’s back from the 2026 Analog Aficionados meetup, held at DesignCon this year, and pieces together some history of ...

The glitz and glam of Hollywood captures the attention of Americans starting from an early age. Beyond celebrities' Instagram Stories and red carpet poses, there are actors out there paying their dues ...