Hello all,
Im trying to make a remote control system using mobile phones where I will send a didgital control signal from the control station to destination using two mobile phones one fro sending data and the second to recieve the data. I used the pobile mic to send my digital signal and used the speaker in the receiving phone to get back the signal. Because I will useing a digital data, I used a sequre wave as the input in the sending hpone but in the receving phone I got almost sine wave (may be due to the internal filters of the mobiles) which is not digital data as I sent. My idea is this: I need to send and recive a control signal (digital or analog) using mobile phone, so please whoever has anyidea or research or hint let me know as this progect is my graduate project and I have only small idea about mobile programming and control.
any help is greatly appriciated.
Im trying to make a remote control system using mobile phones where I will send a didgital control signal from the control station to destination using two mobile phones one fro sending data and the second to recieve the data. I used the pobile mic to send my digital signal and used the speaker in the receiving phone to get back the signal. Because I will useing a digital data, I used a sequre wave as the input in the sending hpone but in the receving phone I got almost sine wave (may be due to the internal filters of the mobiles) which is not digital data as I sent. My idea is this: I need to send and recive a control signal (digital or analog) using mobile phone, so please whoever has anyidea or research or hint let me know as this progect is my graduate project and I have only small idea about mobile programming and control.
any help is greatly appriciated.