Magical - Weather Reactive Egg

Halloween is all about surprises, creativity, and a touch of magic. This year, I wanted to create something different something that combines technology, art, and a spooky vibe. That’s how the Magic Egg was born.

The Magic Egg is a DIY weather reactive light hidden inside an eggshell. It changes color based on the current weather conditions outside. Imagine an egg that glows an eerie blue during a storm, a fiery orange on a sunny day, or a mysterious purple when the skies turn cloudy. it will be look like a normal egg if there is no power. It’s simple, smart, and absolutely mesmerizing.

It’s the perfect Halloween decoration for tech lovers, spooky, and fun to build!

1. A real eggshell (cleaned and dried)

1. 1 × ESP8266 (NodeMCU or Wemos D1 Mini)

1. 3 × WS2812B / NeoPixel LED

1. Jumper wires and soldering tools

1. Power source (USB or battery)

1. Formboard

The ESP8266 connects to your Wi-Fi and fetches live weather data using the OpenWeatherMap API. The temperature and weather conditions are then translated into colors using the NeoPixel LED inside the egg.

For example:

1. Rainy → Blue
2. Sunny → Yellow
3. Hot → Red

The LED is placed inside a real eggshell for a unique and minimal design.

Carefully crack the egg from the top and remove the contents. Rinse and dry the shell completely. Make a small hole at the bottom for the wires to pass through. You can paint the shell or keep it natural for a minimal look.

Connect the NeoPixel LED to the ESP8266 as follows:

Data → D4 (GPIO2)

VCC → 5V

GND → GND

Go go Openwheather and sign in.

Click on profile and click My Api Keys

Enter an api name inside create key. Here my api name is weather.

Copy the api key.

Use paid features, for more accurate and real-time weather data.

Install:

1. ESP8266 Board Package (via Board Manager)
2. Adafruit NeoPixel Library
3. ArduinoJSON Library

Download and open this code on Arduino IDE.

Update the Credentials with yours and upload the code.

Using a 2mm form board, i made box for the base part and covered it using wooden style papers.

Place the NeoPixel inside the eggshell and pass the wires through the bottom hole. Mount the egg on a small holder, connect the ESP8266 to power, and watch the colors change automatically based on the weather outside.

And that’s it! Your Magic Egg is ready to light up and change colors based on the weather. A small DIY project, but full of magic and fun. Even if you don't integrate with api , just put some neo pixel inside an eggshell and decorate it. Happy making!