Two-Wire Remote Control
This time we’ll look at a kit for a remote control that allows you to send ten digital control signals over a distance of more than 50 metres. How? Using infrared? No, with just two wires!When using a microcontroller or PC to control various pieces of equipment it is vital that the digital control signals can be sent reliably over larger distances, and in such a way that we do not need lots of cables. This circuit, which has been developed by Velleman, allows us to send ten digital signals through two wires. It can be used to cover distances up to 50 m.