making of mobile phone operated robot

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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