Inside the thermometer scarf is an Adafruit Flora Arduino board, an Adafruit NeoPixel RGB LED strip, plus humidity and temperature sensor modules that actually read the weather conditions.

Now to the hardware setup that consists of an Arduino Uno and a 128 × 64 I 2 C OLED display. The OLED display used is a 5-V tolerant type with just four pins: VCC, GND, SDA, and SCL. You can, of ...