Hi, heres my situation, im going to be having my work van kept outside my house soon, but its full of expensive tools etc. I am looking into the idea of making a mobile phone alarm. so that when a door is opened it triggers the phone to dial a preset number and alert me. the phone will be a nokia 3310. i was planning to connect wiring to the circuit board under the buttons. the way i have been planning it would work is: a remote operated alarm unit to control the on/off. not sure what output it has yet though. the way the phone works it will need to have one button pressed for .5 second ( the cancel button) to clear the screen. then a 1 second pause and another button, ( the hot key) pressed and held for 3 seconds. relays should be fine to close the circuits on the buttons i think. i just need to get my head around the timing side of it. the circuit could also repeat every 30 seconds or so to make sure the message is recieved. any help would be much appreciated thanks
also i am sorry, but i posted this in basic electrics section by mistake, but i cant remove it, sorry, ive only just joined.