INS-ANI
Full Member level 3

I have a project where i need to transmit some command bits using wireless mode of communication. Considering its usage as a mobile surveillance unit, range should not be around 200 m or so.
I need advice what options do i have?
here's what i was planning.
Using a pair of GSM cells one at control end and other at mobile unit end.I plan to connect a call and then transfer data to uC using DTMF decoder.
I am also using RF module to transfer some surveillance data back to control.(Which is data from IR webcam)
Just for learning purpose my institute demands that i can not use same wireless medium for both the application.
now, i request you to please advice me on following points:
1) Ideally the system should have long range, what other options do i have.
2)I am concerned about the pricing of two GSM cells. Hence please advice me if it would be cheaper to use Cell phone or GSM modules?
3)any other advice you have for my problem and also for improving the project.
(If you require more information, please prompt me to add more details)
I need advice what options do i have?
here's what i was planning.
Using a pair of GSM cells one at control end and other at mobile unit end.I plan to connect a call and then transfer data to uC using DTMF decoder.
I am also using RF module to transfer some surveillance data back to control.(Which is data from IR webcam)
Just for learning purpose my institute demands that i can not use same wireless medium for both the application.
now, i request you to please advice me on following points:
1) Ideally the system should have long range, what other options do i have.
2)I am concerned about the pricing of two GSM cells. Hence please advice me if it would be cheaper to use Cell phone or GSM modules?
3)any other advice you have for my problem and also for improving the project.
(If you require more information, please prompt me to add more details)