Re: School Project
i do have a better option as this is an advance project rather not a school project.do less but complete and understand ur project.
you stated you project as security system right.as a school project you can just use NE 555 timer ic at monostable configuration,pass No. 3 pin output to the ir led.arrange the value of resistor and capacitor such that u can have ur own frequency modulation.
on receiver part you can play with anything,a motor,or leds or buzzer to enhance your security.
i can help u on this if you r confused.understanding bluetooth protocols and comunicating it with microcontroller is not so easy.TRY TO UNDERSTAND YOUR PROJECT.it will help u.
shashir