Waveguides come to mind, but so do active elements like filters made from nothing but PCB traces, which is the subject of this interesting video by [FesZ]. Of course, it’s not quite that simple.

Download the codes here Arduino simple shield potentiometer code: Arduino shield rc car: Arduino nano module L298P code: ...

Simple products are often less exciting than complex, high-tech ones, but provide an opportunity to learn about smart and efficient design. Robotwist is an example of a product that understands ...

These are the best free PCB (Printed Circuit Boards) Design Software for Windows 11/10 PC users to create, analyze, and study circuits.

The PCB holder uses 3D-printed parts, M5 hardware, a length of 2020 aluminum extrusion, and one spring to create a handy and adjustable design that accommodates a variety of PCB sizes and shapes.

This high-resolution audio amplifier delivers exceptional sound quality with a simple yet efficient circuit design. Engineered for powerful performance, it enhances audio output with clarity and ...

The simple circuit design in lets you measure all components of a current flowing in a dc servo motor. The rectified output of the circuit uses ground as a reference, so you can measure the output by ...

This design shows how a piezoelectric transducer's acoustic output can be increased while minimizing the parts count and cost.

An RC circuit in series with the coil allows full-current turn-on for reliable relay operation, then reduces the current to save power. Fellow engineer Sanjay R. Chendvankar of Mumbai, India ...

After more than 20 years since its first appearance, author W. Stephen Woodward presents an updated version of his classic Idea for Design article on thermoelectric coolers, including ...