[NovaSpirit] asserts that Freecad is simple, and provides a simple walkthrough to create a part in the video below. If this were riding a bike, this tutorial would be akin to watching someone ride ...

Luckily, [Paul] sent in a great tutorial on building a LiPo charger that works over USB. In the original design of [Paul]’s board, he chose a Maxim MAX1551 Lithium battery charger.

Is your car experiencing battery drain issues, or not starting after sitting for a few days? You may have an electrical short, and in this video, I’m going to show you the correct and simple way to ...

An improved circuit with an optocoupler type TLP621 is shown in Figure 2. Figure 2 A circuit with an optocoupler (TLP621) which generates higher (even) harmonics that can be added to the original ...

This simple water detector circuit uses alternative voltage in order to prevent the corrosion of the electrodes. It is easy to build and uses N1 as a trigger Schmitt gate which generate the AC. If ...

A simple electric circuit learns to classify data in a creative new design that could lead to more energy-efficient machine-learning hardware.