Make An Intercom From Two Corded Phones

You probably have an old set of corded phones sitting in a box on a shelf somewhere. This fun little project, which is great for doing with kids, turns a pair of those corded phones into a DIY intercom.

As DIY blog Make points out, all the circuitry for processing voice is already in the phones. To connect them, you just need a 9V battery and a resistor. Check out the video above, and then hit up the full build over at Make.

Simple Intercom From a Pair of Old Corded Phones [Make]


    Doesn't ring the phones... pretty useless as an intercom

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