Telephone operated remote control using PIC16F84A microcontroller
I successfully completed this project under my COP course this semester.
The project deals with the programming of PIC 16F84A so that it could be used in the circuit to control relays using telephone. Also the hardware implementation is done to make it a proper working circuit.
This design controls up to 8 devices using a PIC microcontroller (PIC16F84A) connected to the phone line. The unique feature here is that unlike other telephone line based remote control, this device does not need the call to be answered at the remote end so the call will not be charged. This device depends on number of rings given on the telephone line to activate/deactivate devices.
Once the PIC is programmed and is connected to the circuit, we can actually control the appliances by just giving certain number of rings on telephone to which it is attached. Its like a universal remoter control, and you can control appliances or any other circuit from anywhere in the world !
Note : It required 16F84A microcontroller, MCT2E optocoupler, NE555 timer, 7805C regulator IC, some resistors, capacitors, transistors, crystal (4MH0z), DIP Switch, relays and diodes.
What a geeky-max post. I didn't get 90% of it. But whatever shit that is, sounds real cool.
ReplyDeleteOne question though bro. Does it really work? And how much does something like that cost?
@amrit : ya it does, i spent arnd 200 bucks, but if you order the IC in bulk, it gets very cheap.
ReplyDeleteyou may get the IC for free, if you fill some forms in some sites..
you deserve the success...
ReplyDeletei know how hard you have worked on this project :P