Here’s an ESP8266 magnetometer that opens a driveway gate when it detects the car. Posted in Arduino Hacks , green hacks Tagged arduino nano , hall effect , hall effect sensor , magnetometer , oled ...

The build uses a HMC5883L magnetometer. ... The output of the device is read by an Arduino Nano, which is hooked up to a string of WS2812B LEDs and a small OLED display.

Well tech tinkerer Joe Desbonnet has whipped up what he dubs "poor man's NFC" using an Arduino, some magnet wire, and any compass-equipped Android smartphone (which is almost all of them).

Skyfront has released the Skyfront MagniPhy, a UAV magnetometer designed for surveying, mineral prospecting, locating orphaned wellheads, and detecting landmines and unexploded ordnance (UXO).The ...