TME has expanded its offering with Raytac Bluetooth Low Energy (BLE) modules based on Nordic Semiconductor SoCs with Arm Cortex-M4F or Cortex-M33 cores, 192 kB to 1.5 MB of program memory and up to 256 kB of RAM. The modules support BLE versions 4.0 to 6.2 with data rates up to 2 Mb/s, Long Range…
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…
In the previous article, we covered how the I2S protocol works, from its three wires (BCLK, WS, SD) to the clock arithmetic that ties them together. We also looked at the one-bit delay that trips everyone up and the controller/target and transmitter/receiver roles. That’s the foundation for everything that follows. In case you could use…
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…
In the previous tutorial, we followed sound from the microphone to a buffer of pulse-code modulation (PCM) samples in an ESP32’s RAM. We also looked at what audio codecs do along the way. This article picks up from that buffer of numbers and explains how a machine turns them into words. We’ll start by answering…
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…
