gsm switch

Discussion in 'Wireless & RF Design' started by djstar, Aug 8, 2010.

  1. djstar

    Thread Starter Active Member

    Jan 26, 2008
    hi, im quite new to electronics and have a project i would like to undertake. i have a friend that parks her car in a private car park, she uses a radio key fob with a open button and close button, the thing is, when friends come to vist she has to be there and go out side to press the button. what i was thinking of was to controll the switch by phoning a phone. the idea i had was to have a mobile phone and have the external head phone cable conected to a transistor which would swicth on a monstable for 10 seconds which inturn will turn a relay on which is connectto the keythob switch. does this sound plausable? if so any ideas about how i go around doing it? another thing that isent overall important is the key thob has to be with in a certain distance of the gate, is there a way of amplifying the signal from the key fob.

    any help would be greatly appreciated. liam