eye mouse
Post on 30-Dec-2015
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Eye mouse
Ruba &OlaAgendaWhat is PHA ?ComponentsCircuit descriptionResults
PHAPHA :Phone-Home AutomationControlled automatically.Controlled remotely.provided a telephone line.
Basic componentsCMD 8870
ISD 25120
Microcontroller
CMD 8870DTMF (Double Tune Multi Frequency).
ISD 25120single chip, multiple message voice recorder/playback device.on-chip oscillator.microphone preamplifier.automatic gain control.antialiasing filter.smoothing filter. speaker amplifier.non-volatile memory cells.
ISD(modes)
Operational Mode:The ISD2500 series is designed with several build-in operational Mode that provide maximum functionality with external component.Address Mode:
ISD(timing diagrams)
Record
ISD(timing diagrams)
Play
Block diagramInputRing DetectionOpen linevoice sectionInterfaceOutputDecoding section
Output
Call the home phone number
The line is opened First message :
12345*
Check the password:Correct passwordWrong password(After 3 trying the line is closed)
1If the password is correct:Choose the device
If the device number is correct :The device will turn on or turn off
What is the digital lock?? Keyless door Open the door using phoneDTMF principleamplification DecodingoutputBlock Diagram
correct
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Digital lock (components)CMD8870MicrophoneLCDSolenoidmicrocontrollerOutput
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