making of mobile phone operated robot
DESCRIPTION
mKINGTRANSCRIPT
MAKING OF MOBILE PHONE OPERATED ROBOTOPERATED ROBOT
P.Raghavendra PrasadFinal Yr, EEE
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MO
L ft
Input D i
TOR
LeftMotor
MicrocontrollerDeviceDRIV
RightMotorV
ER
Motor
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Input Devices
Autonomous RobotsIR S A l IR Sensors, Analog output
IR Sensors Digital outputIR Sensors, Digital output
Ultrasonic Sensors
Light Sensors (Photodiode, LDR etc..)
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Input Devices
Manually Operated RobotsR d F lRadio Frequency control
Infra Red controlInfra Red control
Mobile PhoneMobile Phone
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DTMF Tones
Dual Tone Multi Frequency (DTMF) tone is the signal to the networkq y ( ) gcenter that is generated when you press any key of your telephone
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Network center
AB
DTMF Tones
With DTMF, each key you press on your phone generates twotones of specific frequencies.
So a voice can't imitate the tones.So a voice can t imitate the tones.
one tone is generated from a high-frequency group of tonesd th th f l fand the other from a low frequency group.
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DTMF tone selection Table
Frequencies 1209 Hz 1336 Hz 1477 Hz 1633 Hz
697 Hz 1 2 3 A
770 Hz 4 5 6 B
852 Hz 7 8 9 C
941 H * 0 # D941 Hz * 0 # D
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How to use this DTMF tones ?
HT9170 series IC’s are DTMF tone receivers.
Th d h D l D dThey are integrated with Digital Decoder.
Detects and decode all the 16 DTMF tone pairs into 4 bit code.
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Pin DiagramgCircuit connections
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How to connect mobile phone with HT9170 .?
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Whole circuit on PCB
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Robo Race
Sumo wrestling robot
THANK YOU
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