I saw this circuit seen on Facebook at https://www.facebook.com/share/r/1GAqZQWc7y/ In this circuit design the soil acts as a simple moisture sensor by changing electrical resistance with water content, forming a basic circuit with two probes (wires) connected to transistor and indicator LED. Water conducts electricity better than dry soil. When water fills the gaps between →
You know what I miss? Turning on something and having it just work. No registering on another device. No downloading an app. No clicking many accept popups (cookies tracking legal). Just plug it in and it does the thing it’s supposed to do. →
How to get your tablet or smart phone display graphics to show on your AV system? Year ago there were HDMI outputs built into several tablets, but nowadays you very rarely see HDMI port in tablet. ✔️ 1. Direct HDMI or micro-HDMI port Some Android tablets have a micro-HDMI or even a full-size HDMI port. →
The day is here! International Sound Check Day Check one two, one two, one two. It’s International Sound Check Day! First held on one two, one two, one two (12/12/12), International Sound Check Day is a play on the date it is held and celebrates the sound check. Five minute sound check https://youtu.be/LzI54x6nork?si=gku8iQppqkAUhVuH →
This posting is here to collect cyber security news in December 2025. I post links to security vulnerability news to comments of this article. You are also free to post related links to comments. →
To scientifically analyze the difference between audio interconnects (such as copper vs. silver, or different types of insulation or shielding), you need to approach it from both a measurements standpoint and a listening tests perspective. Here’s a structured approach you can take: 1 1. Objective Measurements: The first step is to use measurement equipment to →
If you need some funny technology shirt ideas. Here are some crazy, funny tech-themed shirt ideas that are still school-appropriate: “I speak fluent binary” “IT Department: We break things better than you fix them” “404 Error: Sanity Not Found” “I keep all my jokes in a .zip file” “I have a PhD in turning things →
What Is Braiding in Cables? Understanding Textile Braids, Shielding Braids, and Braided Conductors Cables come in many forms, and one of the most visually noticeable — and functionally important — design elements is braiding. But not all cable braiding serves the same purpose. Depending on the type, braiding can offer mechanical protection, electromagnetic shielding, or →
What Is Compression in Audio? Understanding the Two Types The word compression is often used in audio production, but it can mean different things depending on the context. Generally, compression refers to reducing something — either the dynamic range of an audio signal or the file size of an audio recording. While both processes are →
Last week there was two major technology events in Helsinki Finland inside the same building: Teknologia 2025 and and Cyber Security Nordic. I visited both of them. Teknologia 2025 event highlights included increased visitor and exhibitor numbers, with a strong focus on smart and sustainable industry, safety, AI, and the hydrogen economy. Cyber Security Nordic →