auto answering circuit using 8051
Discussion in "8051 Discussion Forum" started by har Oct 22, 2007.
Mon Oct 22 2007, 05:14 pm
i have replied you in the other topic.. and i don't think we really need 8051 for just switching on the answering machine 
if you really want then.. its simple.. like one wire connected to 8051 via optocoupler can detect if ring is there.. and after say 3 rings.. you need to unhook the phone and activate the answering machine
that can be done with the help of a relay circuit which is controlled by 8051.. 
hope i am not wrong.. i just gave u a rough idea.. so it will give u a head start
if you really want then.. its simple.. like one wire connected to 8051 via optocoupler can detect if ring is there.. and after say 3 rings.. you need to unhook the phone and activate the answering machine
that can be done with the help of a relay circuit which is controlled by 8051.. hope i am not wrong.. i just gave u a rough idea.. so it will give u a head start
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