How to work with real cables? Important rules for cable branches

What if you need to extend a USB 2.0 interface over a long distance? How do you connect a webcam, speakerphone, or other equipment remotely?

Applications, details, and features.

Both device types have HDMI in/out and USB ports on the housing. But the functionality, purpose, and price of these devices are different. Let's take a look at these differences.

An electronic clock without a microcontroller is a circuitry masterpiece that can be looked at forever! Today we continue to explore the practical possibilities of pure logic.

When servicing metal cable lines, measuring bridges are most commonly used. They are accurate in a wide range of measured values, with compensation of extraneous influences, and inexpensive.

Nowadays, homemade electronic products on microcontrollers are trendy. I am even more interested in assembling different devices with simple logic circuits. Their operating principle is more visual, which gives me aesthetic pleasure. Today we are going to show you four simple devices. Three of them are based on flip-flops, and the fourth one, which we will start with, could use a flip-flop.

The ARC (Audio Return Channel) function in HDMI has helped to remove unnecessary communication between TV and AV receiver, soundbar, or home theater. What does the ARC feature mean for twisted-pair HDMI extenders, and how can you use it?

What is the difference between an ideal symmetrical (balanced) cable and an actual cable? What is asymmetry (imbalance) in a symmetrical (balanced) cable? Asymmetry (unbalanced) and its parameters.

I found dangerous light pulsations with the Shelly RGBW2 LED controller and the Shelly Duo RGBW GU10 bulbs. I studied this feature and compared my experimental results with current requirements and recommendations.

What do you need an HDMI switch and a multiswitch for? What are the differences between them? What disadvantages do low-cost devices have?

Teardown/test of a power supply from a well-known manufacturer. Manufacturing quality, circuitry, output voltage quality, waveforms.

We will study how the pairs in one multi-pair cable and different cables close together affect each other. We will learn the basic characteristics of this influence - the fundamental parameters NEXT and FEXT.

Many guitarists consider the DS-1 to be the worst-sounding guitar pedal. Could this 1978 Roland design be a failure and is now hopelessly outdated? We can get a good sound out of this classic pedal, too. For that, we'll put it, listen to it, and start by studying the circuitry.

What's the difference between a regular twisted-pair HDMI extender and an over-IP. HDMI over-IP extender image compression and video transmission delay. Lenkeng LKV383PRO vs Lenkeng LKV373.

‍Carrier signal feed relative to the ground. How to choose the right grounding point for the transmitter? Tracing pipelines and cable channels made of conductive and non-conductive materials. Identification of pairs in multipair cables.

A teardown / review of a well-known power supply with wireless control. Manufacturing quality, circuitry, output voltage quality, waveforms.

How is the generator connected? How to choose the right type of receiver probe? How to provide a probing current in the line being traced? What affects the range of the locator?

DIY voltage-boosting LED driver How is it assembled? How do you convert an existing one to suit your needs?

Twisted-pair extenders can be split into two types: 1. only work over "straight" twisted pair 2. work as a "straight" twisted pair, so in a LAN network