i was just wondering that like that laser alarm system can a cell phone be attached with a photo cell

i was just wondering that like that laser alarm system can a cell phone be attached with a photo cell and when some 1 cross the laser the cell phone send a SMS or some thing like this and plz keep it in ur knowledge that this stuff should be able to built at home thanks !?

slappyslack7 years ago
your best bet is to use a speed dial instead of sms. i made my self a similar system to what you want but instead of a laser i used a trip wire attached to a bit of card in between a magnet and a screw that were attached to a number. when the card pulls out the screw and magnet join, the 1 button activates  the speed dial.

this way if the wire is tripped i will either be able to answer and hear what is going on or my voice mail will pick it up. (might catch burglar saying names or summit)

if you really wanted a sms you would have to attach the photo sensor to the ok or send button so that when the beam is broken it activates send, but then this way you would have to get the message ready so that you only have to press send for it to be sent.

although one problem i can see is that, as far as i know, a sensor activates when there is light not when there isnt, so it probably wouldnt be straight forward. (im not 100% on photo/light sensors.)

hope any of that helped
orksecurity8 years ago
Setting up the alarm is trivial. The hard part is making the cell phone send the message automatically. If I was trying to do this, I think I'd instead set up a small computer hooked to the internet, and write a program which sends mail to an email-to-SMS bridge.