If you’ve got an Arduino, a few passive components, and a SSD1306 OLED, then [mircemk] might ... parts into an attractive and functional audio display. The project’s Hackaday.IO page explains ...

The circuit is extremely simple, comprising the sensor, an Arduino Nano, and an OLED display. This device is handy because its voltage output has a known relationship to the gauss level the sensor ...

It’s inexpensive, accurate and reliable and has a wide temperature range. This article shows how to use an Arduino Uno/Nano microcontroller with an OLED display module for reading a Type K ...