Smart Home Guides
Step-by-step smart home projects with wiring diagrams, component lists, and ready-to-deploy code.
How to Build an ESP32 Desk Presence Busy Light
Build an ESP32 desk presence light that shows whether your workspace is free, recently active, or manually set to busy. Includes PIR wiring, OLED status text, LED ring feedback, and complete Arduino code.
How to Build a CO2 Room Monitor with ESP32
Build an ESP32 CO2 monitor with an Adafruit SCD41 sensor, SSD1306 OLED, shared I2C wiring, warning thresholds, and live temperature and humidity readings.
How to Build a Tiny ESP DeskBuddy with ESP32-C6
Build a small ESP32-C6 touch LCD DeskBuddy with a monochrome animated face, swipeable dashboard pages, Wi-Fi data cards, and printed enclosure.
How to Build a Morning Thermal Printer with ESP32
Wire an ESP32 to a CSN-A2 thermal printer on UART2 (GPIO 4/5) with a dedicated 5 V charger for VH, fetch weather and calendar over Wi-Fi, and print a daily briefing.
How to Build an ESP32 Air Quality Monitor with BME280
Build an ESP32 air quality monitor using a BME280 sensor and SSD1306 OLED display. Shows indoor temperature, humidity, pressure, and a simple comfort status. Complete guide with wiring, code, and assembly.
How to Build a Scrolling LED Matrix Message Board with ESP32
Step-by-step guide to building an ESP32 scrolling LED message board using a MAX7219 8x32 dot matrix module. Includes SPI wiring, MD_Parola code, and assembly instructions.
How to Build an ESP32 Weather Station with Clothing Advice
Build an ESP32 weather station that fetches Amsterdam forecast data over Wi-Fi and shows simple clothing advice on a Waveshare 1.83-inch LCD. Includes complete code and wiring guide.
How to Build a Gesture-Controlled Mood Lamp with ESP32
Step-by-step guide to building an ESP32 gesture-controlled mood lamp using an APDS-9960 sensor and WS2812B LED strip. Includes wiring diagram, Arduino code, and assembly instructions.
How to Build a Rocket Launch Alarm Clock with ESP32
Create an ESP32 rocket-launch alarm clock with DS3231 RTC, WS2812 LEDs, and buzzer. Alarm triggers a 10-second countdown with liftoff sequence.