DTMF Monitor and controller
How to monitor the start time, end time, call duration etc using a DTMF decoder and PIC as well as activating an external electrical device using the PIC and decoded DTMF signal?...There are circuits all over the net dooing them seoerately with the PIC16FXX and other microcontrollers but not both at the same time. Could anyone come up with a circuit to do both because i run out of ports when using the PIC16FXX...Tried using the PIC18FXX but still couldn't put together everything...