It’s something [mircemk] demonstrates, with an Arduino-powered magnetic field strength meter that uses a UGN 3503U Hall effect device. The circuit is extremely simple, comprising the sensor, an ...

[mircemk] shows how to create a simple non-contact proximity sensor using little more than an Arduino Nano board, and a convenient software library intended to measure the value of capacitors. The … ...

Arduino digital tape measure “The brains of the DMW is an common Arduino Pro-Mini, which monitors the buttons, rotary sensor, and battery, while recording and displaying measurements on the DMW ...