A simple, low cost, and precision frequency meter uses only two pins of a pc parallel port (Figure 1). The TTL-level periodic input signal with frequency f IN connects to the ACK pin of LPT1. This ...

Learn how to master every series and parallel circuit question and solve problems with 100% confidence. This guide breaks ...

Iron-on patches can repair clothing or add personal flair to backpacks and hats. And now they could power wearable tech, too. Researchers reporting in ACS Applied Materials & Interfaces have combined ...

This ironed-on circuit creates a “VT” pattern that lights up LEDs, even when bent into different shapes (as shown in the middle and right images). Iron-on patches can repair clothing or add personal ...

Build festive decorations using Arduino and Raspberry Pi with these five creative holiday projects and video tutorials ...

With this circuit, you can flash some LEDs for your rc airplanes or any other uav just like the real strobe navigation lights ...

A precision voltage divider produces a specific fraction of its input voltage using carefully matched resistive components.

Plotters aren’t as common as they once were. Today, many printers can get high enough resolution with dots that drawing ...

One part wants 3.3V logic. Another wants 5V. What do you do? Over on the [Playduino] YouTube channel, there’s a recent video running us through a not-so-recent concern: various approaches to ...

Genetic circuit engineering is the synthesis of unnatural DNA segments encoding protein or RNA molecules that control each other’s levels. Genetic circuit engineering is the bottom-up, local approach ...

If you plan on getting involved in day trading, then having access to reliable and feature-rich charting platforms can be an essential tool. With numerous day trading chart providers available in the ...