jithinnandan
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Dear all,
I'm working on a circuit to control the water pump based on DTMF code and cellphone.
But the DTMF section is not working properly.
While sending the DTMF code, pin # 11 to 14 is on high and no change in state and pin # 16 is at low state.
This is the case for all DTMF codes which we are sending.
Kindly see the circuit and somebody please help me.
I'm working on a circuit to control the water pump based on DTMF code and cellphone.
But the DTMF section is not working properly.
While sending the DTMF code, pin # 11 to 14 is on high and no change in state and pin # 16 is at low state.
This is the case for all DTMF codes which we are sending.
Kindly see the circuit and somebody please help me.
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