DTMF Based Robot

DOWNLOAD ABSTRACT

AIM:

Design and Development of DTMF based Robot.

PURPOSE:

Most robots controlled by RF communication. RF is for small distance less than 1000 meters. If we want to control from far distance then it is very difficult. Here we have solution with DTMF. DTMF is cheap and high reliable. Just need mobile and it can work as like remote. Here we design DTMF based robot.

DESCRIPTION:

This project includes DTMF module (CM8870), which is connected to Arduino digital pins. Two robot motors controlled by l293d which is connected to Arduino digital pins.

WORKING:

Here DTMF works like remote. DTMF is nothing but dual tone multi frequency. Mobile phone generates DTMF tone when we pressed keys in dial pad. Here mobile connected to DTMF module through audio cable. We can call to mobile from another mobile. After answering call we can control robot from remote mobile. By pressing keys in mobile phone robot will move in different directions. Here 2 is for front direction,  8 for back, 4 for left, 6 for right and 5 for Stop. Robot directions status will display on 16×2 LCD display.