Turn an ESP32 development board into a Matter device using the Matter library already built into the ESP32 software. This guide walks you through creating an on/off light that can join major smart home platforms.

This project builds a contactless vital signs monitor around a DFRobot C1001 60GHz mmWave radar, an ESP32 and a small SSD1306 OLED display. The same hardware runs three applications: live position tracking, sleep monitoring, and heart-rate and breathing-rate monitoring.

Atmosis builds an environmental monitor around the Arduino UNO Q that measures nine parameters, including IAQ, TVOC, HCHO, CO and PM2.5. Edge Impulse classifies the sensor patterns, then Gemini turns them into readable recommendations shown on a local dashboard or sent through Telegram.

Add thermal intruder detection to Home Assistant using an ESP32 camera that keeps all footage off the cloud. It highlights warm regions in a browser, lets you set detection areas, and publishes alerts through MQTT.

Explore traditional 8051 architecture and embedded system fundamentals with a small, expandable control system. The design centres on the AT89S8253-24AU, which combines 12 KB of Flash program memory, 2 KB of EEPROM data memory and 256 bytes of internal RAM.

This project builds a rotating inspection station from an Arduino UNO Q, a webcam and a servo motor, with six slots that move each board into the camera's view. A multi-stage AI pipeline first classifies each slot as empty, bare PCB or assembled PCBA, then inspects accordingly.

Turn a USB BLE dongle and a few lines of Python into a bridge from sensor broadcasts to a cloud database. This tutorial shows how to decode the readings and pass them through a Cloudflare Worker into D1.

This guide introduces I2S, the bus that moves digital audio from one chip to another. It starts with what digital audio is, builds up the protocol one wire at a time, and finishes with the roles devices play on the bus.

An Arduino UNO can generate motor control signals, but its I/O pins cannot supply the current most motors require, so a driver must sit between the board and the motor. The L293D Motor Driver Shield fills that role, shown here with an SG90 micro servo.

This guide connects DHT11 and DHT22 temperature and humidity sensors to an Arduino Uno, covering their working principle, pinout and wiring. Both sensors combine the two measurements in a compact package and communicate with the microcontroller through a single digital data line.

STMicroelectronics has packed AI capabilities and enhanced cybersecurity features into its STM32H7 microcontrollers, alongside embedded Flash. The result is a family intended for sophisticated industrial and consumer applications.

This project connects a rain drop sensor to a NodeMCU ESP8266, which reads the sensor value and sends it over its built-in Wi-Fi to a KiwisIoT dashboard. You can monitor the readings remotely and watch them change as water lands on the sensing surface.

The TTP223 module detects a finger by sensing changes in capacitance, the same principle used in smartphone screens, and works through plastic, glass and wood. This guide covers its hardware, operation and wiring for Arduino-type projects as an alternative to mechanical push-buttons.

This beginner guide shows how to use BJTs (NPN and PNP) and MOSFETs as electronic switches for loads such as lamps, DC motors and buzzers. It covers the theory, the required components and step-by-step wiring for the most common transistor types.

This open-source project turns a low-cost ESP32-C3 into a DNS-based ad and tracker blocker. It checks each request against a blocklist of more than 140,000 domains, returning 0.0.0.0 for blocked ones and passing allowed requests to an upstream DNS server.

The Tux board was created by a PCB design enthusiast who wanted an ESP32 board with 5 GHz support. This board combines the ESP32-C5 with an onboard RGB LED and TP4056 battery charging. Six of its 16 GPIO pins offer ADC functions.