want to make a doorbell , after pressing 3 time or 5sec after without responce, another recorder circuit will work for record the visitor voice.... so how can i mix up the circuit, is the sensor needed???
I think you should only base this on time, not presses. Many people by default press a button more then once, as dumb as it is, it is just human behaviour.
Waiting 5 seconds is easy....just set up a 555 timer in one shot configuration (Google for the schematic).
Recording the voice is harder...easiest would be a tape recorder with a remote jack.
Need Help ~
Posted - Nov 01 2010 : 8:27:18 PM
