The first video below lays the basic groundwork, with a bunch of experiments with 3-axis Hall effect sensors, specifically the Texas Instruments TMAG5273 and TMAG5170. They’re essentially the ...

He built this set of no-contact limit switches using a hall effect sensor. The small black package sticking out past the end of the protoboard is the sensor. It is used to detect a magnetic field.

Magnetic switches and Hall effect sensors in the Lemokey P1 HE offer advantages ... even though the magnetic switches were a joy to type on. This ultimately led me back to the Lemokey P1 Pro ...

developed a new type of quantum standard of resistance based on the Quantum Anomalous Hall Effect. Accurate electrical resistance measurement is essential in electronics and industrial production ...