·    AIM:- Our object is to make DTMF Decoder  that can control by a mobile.

·    PRINCIPLE:- The robot  work on  five decimal number’s such as: 0,5,6,9,8. Then decimal number   convert to binary number.

Ex. We can convert decimal number 5 to binary number 0101. That show 0=0volt supply and 1=5v supply.

Ø     MOTION OF DTMF DECODER:-   

Ø     when we press ‘5’ it decode into binary number 0101 and both the motor of robot will activate and due to both motor rotated in clock wise direction and robot moves ahead.

Ø     when we press ‘10’ it decode into binary number 1010 and both the motor of robot will activate and due to both motor rotated in anticlockwise direction and robot moves backward.

Ø     when we press ‘6’ it decode into binary number 0110 and the motor of robot will activate on left side and right side motor will stop working. So the robot turn on right side.

Ø     when we press ‘9’ it decode into binary number 1001 and the motor of robot will activate on right side and left side motor will stop working. So the robot turn on left side.

Ø     when we press ‘8’ it decode into binary number 1000 and the both  motor of robot will De-activate. So the robot is stop working.


OUR DTMF DECODER:-

Working to show click this link:

https://www.youtube.com/watch?v=7-I1vwLH0Og&hd=1