[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.

[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.

Data encoded on magnetic stripe or proximity cards is reader by the MRC310 and passed onto a controller. The controller then makes the decision and signals back to the reader to either capture or ...