You might find some helpful ideas for wireless devices here too: #-Link-Snipped-#

Controlling a relay from the PC's parallel printer port. A solid state relay controlled by one of the parallel port data lines (D0-D7) using a 300 ohm resistor and 5...

Radio-frequency identification (RFID) is the use of an object (typically referred to as an RFID tag) applied to or incorporated into a product, animal, or person for the purpose of...

Hello All, this is dumes, I am new here 😀