Würth Elektronik has added the WE-NCC series of nanocrystalline cable cores for broadband suppression of conducted electromagnetic interference in cable assemblies. The series supports cable diameters from 3.7 to 21.1 mm and offers initial permeability from 30,000 to 90,000, magnetic flux density up to 1.2 T and a Curie temperature above 540°C for stable performance…
In this project, we’ll build a “smart” restroom door system using PNP and NPN transistors, where simple switching logic replaces software. The design avoids apps and Wi-Fi and instead relies on solid engineering fundamentals. The aim is to design a low-cost, fail-safe solution that detects occupancy, controls indicators, and automates utilities with minimal components. Let’s…
In the previous tutorials, we learned how to create setups for various devices, such as ESP32, Raspberry Pi, and computers on AWS IoT Core, create and attach AWS IoT policies, and communicate data in the form of MQTT messages between Internet-of-Things (IoT) devices and the AWS IoT platform. In IoT applications, devices must exchange data…
Star Wars melody from "How to play musical notes and melody tunes on Arduino."
SMART SECURITY SYSTEM USING RPI
Automatic Wash Basin Tap Controller
Solar
Ping Pong Game
Power smarter, more reliable HVAC systems with TE Connectivity’s Climate Solutions, engineered to meet the evolving demands of heating, ventilation, air conditioning, and refrigeration applications. From residential comfort to commercial and industrial efficiency, TE delivers the components you need to design systems that perform consistently, efficiently, and safely. TE Connectivity combines deep application expertise with…
In the previous tutorial, we discussed Internet of Things (IoT) platforms. As IoT solutions scale in size and complexity, these tools become essential for managing devices, data, and overall system performance. However, not all platforms serve the same function. Generally speaking, they fall into categories such as device management, connectivity management, application enablement, cloud integration,…
Engineering Deep Dive-Monthly Forum Highlights · April Edition Welcome to the April edition of Engineering Deep Dive — a curated selection of the most engaging technical threads from the Electro-Tech-Online community’s Electronic Projects Design/Ideas/Reviews category. Questions are selected based on view counts, reply depth, and educational value. Each entry below has been expanded with context,…
UM 3561 is an excellent Siren generator IC widely used in Toy applications and Surveillance systems to generate different tones. It a ROM (Read Only Memory) IC which can be operated in 2 pen cells and it functions normally down to 2.4 volts. Using only a few components, it is very easy to construct a…
