Spectacular Butter
New Member
At the transmitter end, i have inputs with tone generators attached to it to generate modulating signals with different freq to modulate with the carrier frequency. When the input is pressed, the relevant freq will be generated for transmission.
Just wondering at the receiver end, is it possible that i :
1) feed the signal directly into the PIC ( meaning can the PIC be programmed to recognise different frequencies? )
2) or do i use a decoder to decode the signal based on its frequency and feed the outputs parallelly into the PIC's I/O ports. So if the PIC detect a signal from one of the I/O ports, it will act accordingly.
3) oh yeah, if the answer is 2, i will be more than welcomed if anybody can suggest some good decoder ICs. Was thinking about using HT12D (Holtek) or LM567.
Just wondering at the receiver end, is it possible that i :
1) feed the signal directly into the PIC ( meaning can the PIC be programmed to recognise different frequencies? )
2) or do i use a decoder to decode the signal based on its frequency and feed the outputs parallelly into the PIC's I/O ports. So if the PIC detect a signal from one of the I/O ports, it will act accordingly.
3) oh yeah, if the answer is 2, i will be more than welcomed if anybody can suggest some good decoder ICs. Was thinking about using HT12D (Holtek) or LM567.