View source for Dtmf controlled robot using AVR ← Dtmf controlled robot using AVR

[[Category:Robotics Tutorials]]
=Introduction=
{{Box|type=l_green_light|text=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=
{{Box|type=l_green_light|text=
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.
[[File:Assembled top view.JPG|thumbnail|x500px|Assembled Robot chasis with wheels and motors]]


'''...Assembly sequence'''
<hovergallery maxhoverwidth=600 maxhoverheight=600>
File:Wheel.JPG|1
File:Wheel_Motor_Case.JPG|2
File:Wheel_Motor_Case__Outer_view.JPG|3
File:Assembled_bottom_view.JPG|4
</hovergallery>

}}
=Schematic In Detail=
==The Micrcontroller: Atmega8==
[[File:Xplore AVR Robo Controller Section.PNG|thumbnail|x500px|Micrcontroller: Atmega8]]
==Power Supply==
[[File:Xplore AVR Robo Power.PNG|thumbnail||x300px|Powersupply: Battery or DC Jack powered]]
==The Motor Driver L293D==
[[File:Xplore AVR Robo Motor Driver.PNG|thumbnail||x300px|Motor Driver L293D]]
==DTMF Decoder==
[[File:Xplore AVR Robo DTMF Decoder.PNG|thumbnail||x300px|DTMF Decoder using MT8870]]