TDK Corporation has expanded its NTC temperature sensor portfolio with the M704 and M705 series for temperature measurement in high-voltage systems. The M704 supports voltage ratings up to 4,000 V AC and temperatures from −40°C to +125°C while the M705 supports up to 2,500 V AC, temperatures up to +180°C and a thermal time constant…
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…
TDK Corporation has expanded its NTC temperature sensor portfolio with the M704 and M705 series for temperature measurement in high-voltage systems. The M704 supports voltage ratings up to 4,000 V AC and temperatures from −40°C to +125°C while the M705 supports up to 2,500 V AC, temperatures up to +180°C and a thermal time constant…
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
The central test is whether a robot’s safeguards still protect people when the information they rely on is manipulated. Safety and security teams can begin by tracing the inputs behind each protective decision, challenging them, and revisiting the evidence as the robot changes. They can start with these five questions: What does each protective function…
If you’ve ever said “Hey Google” to a phone sitting across the room, you’ve used embedded AI. However, the phone didn’t stream every second of audio from your location to a data center while it waited for the wake word, the phrase that activates the assistant. Instead, a tiny neural network running on a low-power…
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…
