Scott has published a new build: This is the general idea behind how this frequency counter works. It’s so simple! It’s entirely digital, and needs very few passive components. sn74lv8154 is configured in 32-bit mode (by chaining together its two 16-bit counters, see the...

nick @ novemberfive.co tears-down the Withings GO activity tracker. First, we removed the battery. This is easy: you can simply open the back of the casing with the included tool or with a regular coin. The included battery turned out to be a Panasonic 3V CR2032 with a capacity of...

With a controller and a seven segment display, showing the time is not a so special feature, but when this clock can listen to the user and do what they want, that’s what worth highlighting a “Time Machine”. Analysing human voice and take action based on that is not so simple....

It has been about one year since the announcement of ESP32 SoC and the beginning of its beta testing for some developers. Last Month we covered the release of ESP-WROOM-32 module datasheet,  which promised that “New SDK features, tutorials and example applications will be...

Jian Li, Yingyi Yan and Marvin Macairan have published a Design Note based on LTM4675 dual DC/DC regulator. The LTM4675 is a dual 9A or single 18A step-down μModule (micromodule) DC/DC regulator featuring remote configurability and telemetry monitoring of power system management...

This particular PCB viewer takes your Gerber and drill files and gives you individual layer renders as well as very fancy renders of what your completed boards are going to look like. The tracespace viewer accomplishes all this locally (nothing gets sent to any server!) by...

Cezar Chirila @ allaboutcircuits.com shows how to build a Class-D amplifier which has amazing efficiency. What is a Class-D audio power amplifier? The answer could be just a sentence long: It is a switching amplifier. But in order to fully understand how one works, I need to teach...

Welcome to the first post of the “Exploring Eagle CAD ULPs” series. Every week we will publish a new post about one useful ULPs in Eagle CAD. "ULP" User Language Program is a plain text file which is written in a C­-like syntax and can be used to access the EAGLE data structures...