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intercom

  1. X

    Remotely open door by using same Intercom switch using remote Switch

    Hi, I don't have much knowledge about electronics but I have bought a remote switch using which one can remotely (100 meter distance) turn on/off a light or any other appliance. There is a two buttons "bpt" intercom in my unit. I want to use this remote switch with that intercom such that...
  2. J

    Replacing mini electret mic with a headset

    Hi, I've been building an intercom circuit based on the design by colin55 found in this thread: http://www.electro-tech-online.com/threads/lm386n-1-elecret-mic-amp.121819/#post-1004570 I was wondering how it would be possible to replace the miniature microphone with a 3.5mm microphone jack...

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