Alpha and Omega Semiconductor Limited has introduced the AOPL66801 AmpStack™ MOSFET, an 80 V half-bridge device in a DFN6x5 package that integrates high-side and low-side MOSFETs for higher power density in power conversion designs. The device is specified at 2.2 mΩ max RDS(ON), supports 304 A on the high side and 215 A on the…
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…
This series covers embedded system design using MicroPython and the NodeMCU development board. Throughout each tutorial, you’ll learn embedded programming with MicroPython, along with how to interface different I/O devices, sensors, actuators, and other components with the NodeMCU board. Interfacing a potentiometer with NodeMCU In the previous tutorial, we learned how to interface different actuators…
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
Kingston DataTraveler® Duo USB Flash Drives combine dual-interface connectivity with USB Type-A and USB Type-C® connectors, enabling seamless file transfers across laptops, desktops, smartphones, and tablets. This versatile design supports both legacy systems and modern USB-C devices, helping streamline workflows in mixed-technology environments without the need for adapters or multiple drives. Key features include: Dual…
In May 2026, 97 of the world’s 100 hottest cities were Indian cities. That number isn’t a statistical anomaly. It’s a warning. India has endured punishing summers before, but 2026 is different. El Niño and accelerating climate change have pushed this year’s heat into conditions that go beyond discomfort or inconvenience. The risk is not…
AVR Programming, PIC Development, Serial Communications, and Industrial Interfaces Tags: #EmbeddedSystems #Microcontrollers #AVR #PIC #USBASP #RS485 #ModbusRTU #SerialCommunication #Firmware #Debugging #Electronics #Engineering Introduction: Technical forums remain one of the best places to learn practical engineering. Recent discussions in the Electro-Tech-Online Microcontrollers section covered AVR programming issues, PIC development tools, industrial communication standards, signal…
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…
