Building A Digital Compass With An Arduino. 8 Comments . by: Lewin Day. July 12, 2023. Title: Copy. ... which is hooked up to a string of WS2812B LEDs and a small OLED display.

With it, via I2C, I could add an Arduino Pro Mini, and an I2C Oled Display and make a watch capable of having all this information, plus a pedometer (by analysing accelerometer data).