Need some help with Bluetooth Spy device!

I am trying to build a spy communication device consisting mainly of a Bluetooth transmitter and a tiny pushbutton, all hidden inside a Marker Pen. The button will be placed so it can be pressed without anyone taking notice, letting me send secret messages without anyone knowing! :twisted:

The transmitter will supposedly tell the Android Mobile in my pocket whether the button is currently pushed or not and nothing more (As simple as it gets, right?). Since I am a total noob when it comes to electronics and had a really hard time passing the electronic classes during my Computer Since degree , my question is: How can this be achieved?

I am thinking of using the “BlueSMIRF Gold” component since it will fit inside the Pen. An Aurdino board normally used with the BlueSMIRF will not fit however so I have no clue how to create the interface between the press button and the BlueSMIRF.

Can someone please provide instructions as this would make me really :lol: happy! What If I just connect the pushbutton along with correct Voltage (I think 5v?) the to Rx and TX inputs; will it work?

get your design ironed out and working before you go for miniaturization. only use components that are available in a satisfactorily small footprint and prototype it with dev boards then spin a custom board for your final build - or get creative and solder components directly together being sure to avoid shorting anything to a metal pen body…

For a uC you should look at something like the ATTiny. http://www.sparkfun.com/commerce/produc … cts_id=211