Dtmf controlled robot using AVR Revision as of 11:52, 2 September 2014 by Sandeep (Talk | contribs) (diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)

Introduction

In this tutorial we will see about building a simple dtmf controlled robot. Whenever we make a call, and press keys, dtmf tones are generated and transmitted. The tones can be easily decoded using a IC like MT8870. This enables a lot of possibilities for wireless control over mobile and telephone. A mobile phone is connected to the robot shield and it can be controlled as shown in the table below

Assembling the Robot Cart

For this we will be using Xplore Robot Chasis as shown. The basic components would be

• Xplore Robo Chasis
• Xplore AVR Robo development board with Integrated DTMF
• Battery Operated [BO] Motors for driving wheels
• Castor as a free wheel.

You could make your own hardware setup as per the schematics discussed in the tutorial. The setup is shown in the pictures below.

Assembled Robot chasis with wheels and motors

...Assembly sequence <hovergallery maxhoverwidth=600 maxhoverheight=600> File:Wheel.JPG

Schematic In Detail

The Micrcontroller: Atmega8

Micrcontroller: Atmega8

Power Supply

Powersupply: Battery or DC Jack powered

The Motor Driver L293D

Motor Driver L293D

DTMF Decoder

DTMF Decoder using MT8870