urzalight
New Member
Could anybody help me bout my project...its an on/off controller of appliances by using the phone...it uses a dtmf!! i got this circuit but im not sure it would work! :cry: could anyone please assess my diagram! i dnt knw also how could i be able to monitor when the relays are on or off...my professor required this feature together with an input security code before u could access the device!! :? im not sure if the device will lift the phone up when there is a call!!! The main part...which is the DTMF to BCD Decoder (KT3170) is also not available in our country (Philippines)...where could i get this IC!???? PLEASE HELP!!! :cry: thank you!!!!
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