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Friday - 05 / 01 / 2026
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Energy

Wimshurst generator: how does it work?

The Wimshurst generator produces high voltage static electricity with the movement of a crank. This post explains how it's possible. Wimshurst generator operation It was invented...

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Electronics

LiDAR: what is it and how does it work?

LiDAR is a sensor that uses laser beams to calculate distances and speed of objects and create detailed 3D maps and models. Post about laser...

Telecommunications

Direct-to-Cell: cellphone communication through satellites

Direct-to-Cell is a technology which allows common smartphone to communicate directly with satellites. The explanation is on this post. How it works? 4G and 5G cellphones...

Robotics and Automation

Vacuum cleaner robot: how does it work?

This post outlines the technologies employed in the vacuum cleaner robot, which enables it to clean the ground and navigate autonomously. Motors and the cleaning...
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Projects

Non-invasive current sensor (2nd edition)

In this post, it's shown the operation of the noninvasive current sensor SCT-013 and how to use it with Arduino. How the current sensor SCT-013...

Environment

How is petroleum formed?

This post shows the origin of petroleum and its chemical, physical and biological processes that form this resource in our planet. Formation process stages of...

Travels

Electrical e-Library on Campus Party 2025

I was in Brasília, for the 17th edition of Campus Party Brazil, an annual event of science, technology and entrepreneurship. Campus Party 2025 This event started...