In this video I'm building an Arduino Heart Rate Monitor that is housed in a toy handle in the style of the Star Trek Tricoder. The device uses the PulseSensor with an Arduino Pro Mini and an OLED ...

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 ...

Ultrasonics refers to signals that are above the human hearing span (>20 kHz), and usually in the 40- to 70-kHz range. These signals are used like radar—they’re radiated toward a target and reflected ...

Have a major deliverable coming up that involves lots of people and tasks? The top project management apps we've tested can help you keep your team on track. I'm an expert in software and work-related ...

I’m a freelance home improvement writer covering tools, DIY projects, and home products for Popular Mechanics and other publications. I’m a former residential and commercial carpenter, and an ...

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A respected resource for decades, the Guide for the Care and Use of Laboratory Animals has been updated by a committee of experts, taking into consideration input from the scientific and laboratory ...

For more than 160 years, the National Academies have provided nonpartisan, evidence-based advice on decisions that affect our nation. Browse the listing of projects and activities to see examples of ...