Bourns has announced the Bourns® Model CDDFN2‑T3V3SC and CDDFN2‑T5V0SC surface‑mount transient voltage suppressor (TVS) diodes for ESD, EFT and surge protection in DFN‑2 (0402) footprints. The bidirectional devices support IEC 61000‑4‑2, ‑4‑4 and ‑4‑5 protection requirements with working peak reverse voltages of 3.3 V and 5.0 V, peak pulse current ratings of 42 A and…
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 tutorial series covers embedded system design using MicroPython and the NodeMCU development board. Throughout the series, 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. In the previous tutorial, we learned how to interface analog sensors with NodeMCU, including potentiometers,…
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 the previous article, we discussed artificial intelligence (AI) domains and walked through ten areas you can specialize in: machine learning, natural language processing, computer vision, robotics and physical AI, agentic AI, reasoning models, generative AI, multimodal AI, scientific AI, and edge AI. Each of these areas can become part of a learning path or career…
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…
