Trigger Remote WIth Arduino

Discussion in 'The Projects Forum' started by paintlax, May 20, 2014.

  1. paintlax

    Thread Starter New Member

    Jan 10, 2013
    13
    0
    I have a car key fob with buttons for locking/unlocking the car. I was wondering what the best way to simulate the momentary switches being pressed using an arduino. I have a couple of NPN and PNP resistors but I am not sure how to wire everything up. I have a wire soldered to the trace (red) that is connected to the IC pin and another soldered to the ground (blue). When I touch the wires together it works. I tried connecting the red to the collector of the transistor and the blue to the emitter and then sending a HIGH signal from a pin on the arduino to the base but that doesn't work.
     
  2. absf

    Senior Member

    Dec 29, 2010
    1,492
    372
    The easiest way is to use a reed relay or a miniature 5V relay driven by a transistor.

    Allen
     
  3. enggricha

    Member

    May 17, 2014
    62
    1
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