That is, unless you’ve got one of these nifty magnetic field visualizers developed by [Dr.Stone]. Using an XMC1100 microcontroller development board and a TLV49 3D magnetic sensor, the device is ...

Many people will remember experiments in school with iron filings and bar magnets to unveil their magnetic field. It's not quite so easy to capture the magnetic field of the Milky Way though. The ...

[Long Haired Hacker] has undertaken a high-resolution 3D printer ... magnetic rotary sensor. The chip, which runs from $6.50-$11, can detect and report the rotation of a magnetic field with ...