Remote Worldwide Control through SMS using Nokia Mobile

Mobile phone can serve as powerful tool for worldwide communication for even roaming user. A system has been developed to extend the capability of mobile phone for remote monitoring and control of devices. Nokia Mobile Phone model 3315 was chosen for implementation because of its popularity and low cost. As this model does not support AT commands, F-Bus protocols were used to exchange information between mobile and PC through COM1 port. The system was designed to send SMS to specified mobile user if there is a change in the status of the input port. Moreover, system also scans for any incoming SMS Message. If any SMS with valid code is received, system responds by activating the appropriate output port bits. The various applications of the system are described and further modifications and possibilities are discussed.