Arduino Projects

DTMF Based Robot Car Using GSM Module

DTMF Based Robot Car Control

Introduction

In present days almost all people are familiar with robots. Robots will play a vital role in human life. Robots are Fast And they reduce human efforts on heavy work in industry, building etc. and make easy life. DTMF controlled Robot runs over the mobile DTMF technology that will exist on Dial tone. DTMF is defined as Dual Tone Multiple Frequency. Some frequencies will be used to create a tone.

In simple words adding, and mixing two or more frequencies generates a DTMF tone. DTMF is a Tone Multiple Frequency decoder module with an MT8870 DTMF decoder IC that will decode a DTMF tone signal to a digital signal that is acceptable for an Arduino digitally.

This type of wireless communication gives a remote handling operation of the Robot using the DTMF. A robot is an electro-mechanical machine which has been guided by a computer, Mobile phone or programming, and can do tasks on its own.

Bill Of Materials

S.N

Components

Quantity

Link To BUY

1

Arduino uno

1

2

GSM (Sim 800l)

1

3

Motor Driver (l293)

1

4

Bo-Motor

2

5

Li-Ion Battery

3

Component Overview

Arduino Uno

Arduino UNO
Arduino UNO

GSM (sim800l) Module

Sim800l
GSM Sim800l

Motor Driver

L293 Motor Driver
L293 Motor Driver Module

Bo Motor 

Bo Motor
Bo Motor

Bo Motor Wheels

Bo Motor Wheels
Bo Motor Wheels

Li-Ion Battery

Li-Ion Battery
Li-Ion Battery

Working Overview

DTMF technology works by having the handset generate tones at a specific frequency and playing them over a phone line when a button is pressed on the keypad. Equipment at another end of the phone line listens to specific sounds and decodes them into commands. These commands are typically used to dial a phone number to call but can also be used to signal phone control commands or control remote equipment since the control tones are played in the same channel as the voice signal Itani’s an in-band signalling system this is different than out of band systems.

DTMF specifies eight different tones. They are divided into a high frequency and a low frequency. Each key press corresponds to two tones hence name a dual tone one from a high frequency and one from a low frequency. This allows for sixteen total keys. The Keypad keys are specified as 0 To 9, And *, # through. The All keys letter is not generally used and they are omitted from the vast majority of consumer telephones. 

DTMF developed by the Bell System was introduced for public use on Nov. 18, 1963. It was known by the trademark Touch Tone and was quickly accepted.DTMF was been initially developed by using analogue electronics. The original systems use tuned coils with taps at appropriate locations to generate the correct tone. Modern telephones use Only single-chip integrated circuits to generate tones And You Also Change The Feedback Voice Of DTMF.

Press "1"

Reverse

Press "2"

Left

Press "3"

Right

Press "4"

Forward

Press "5"

Stop

Circuit Diagram & Connection

Arduino DTMF Based robot Car Using GSM Module
Arduino DTMF Based robot Car Using GSM Module

Source Code & Program

Demo Of Project

Now When You Call The GSM number The GSM Module Receives the call and DTMF will Be On

When You Press the “4” the Robot Will Be Going in a Reverse Direction

DTMF
DTMF

Ok, When you realise the “4” Button The Robot Will Stop And When You Press “1” The Robot Will. Going To Reverse Direction.

DTMF
DTMF

If You Press 2 And 3 The Robot Will Move in the LEFT And Right Direction

DTMF
DTMF
DTMF
DTMF

Suppose if you Want To Stop The Robot You Just Press The Button Number “5” and The robot Will STOP.

20220527 095550 scaled e1671340454211

20220527 003232

20220527 003229

Video Tutorial & Guide

Conclusion

The controlling of the robot can overcome the drawback of RF communication which has a limited range where this car can be controlled from anywhere just using the DTMF technology. It will provide Very Smooth control over a wide area Network of the service provider. The program used in the project gives very good control over the movement of the robot.

Prateek

Hi, Prateek Here I’m interested in Electronics That's why I Make Soo Many Projects, I’m currently Pursuing M Tech.. if you Relay Like To My Blog Plz Comment Below...Thanks To All Electronics Lover...❤️

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