A magnetometer drives a 144-LED NeoPixel array via an ArduinoMicro board.
The sensor is an AAL004-10E, the world’s smallest high-performance magnetometer IC. We use a one-meter long, 144-LED array to show the output.
The ATmega32U4 processors in Arduino Micro-type boards are ideal for these sensors because they have integrated differential amplifiers.
Live video at: https://www.nve.com/Videos/video-page.php?video=AAL004-NeoPixel&title=A%20Magnetometer%20Driving%20a%20Huge%20LED%20Array