pSemi® has announced the PE423213, a HaRP™ technology-enhanced reflective SPDT RF switch that operates from 0.3 to 10.6 GHz for ISM, WLAN, Wi‑Fi, Bluetooth and UWB designs. Built on the UltraCMOS+™ SOI process, it uses a 6-lead 1.6 x 1.6 mm DFN package, draws a typical 95 nA supply current and is intended for space-constrained,…
In previous tutorials, we discussed the Inter-IC Sound (I2S) digital audio protocol and the I2S peripheral on ESP32 chips. Now, let’s apply these concepts in a hands-on project. This project turns an INMP441 I2S microphone and ESP32 into a live, browser-based audio visualizer. ESP32 captures sound through the microphone, analyzes each block of audio, and…
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. In this tutorial, you’ll use MicroPython and a NodeMCU (ESP8266) board to show text and live…
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
ITT Cannon MKJ4 Cordset Assemblies are engineered to deliver reliable performance between end-user devices and power/data hubs in demanding environments. Built with Nett Warrior and GOSSRA-approved connectors, these assemblies support dependable power and data connectivity across mission-critical systems. Available with straight or right-angle terminations and customizable cable lengths, the assemblies offer flexibility for a wide…
In the previous article, we looked at what ultra-high reliability means for IEEE 802.11bn, the standard behind Wi-Fi 8. Compared with Wi-Fi 7, it aims for 25% more throughput at a given signal level, 25% lower 95th-percentile latency, and 25% fewer lost packets, especially during roaming. Much of this work happens at the physical layer,…
Welcome to the Engineering Deep Dive: Highlights & Technical Questionnaire This collection outlines key engineering challenges on our Electro-tech-online forums across multiple domains—including power electronics, motor selection, PCB manufacturing rules, circuit simulation, and RF…
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…
