Published August 6, 2017

Home intercom

Home intercom from old phones and a few electronic components.

BeginnerWork in progress1 hour1,052

Things used in this project

24V AC Power supply

1N4007 – High Voltage, High Current Rated Diode

Capacitor 220 µF

Polyester capacitor 1M/100V

Resistor 680 ohm

Relay 24V

Resistor 10k ohm

Terminal Block Connector

RJ11 socket

Line telephones

Soldering iron (generic)

On the picture is the first prototype.

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