How to make DTMF controlled robot using Arduino?

The received tone is processed by the Arduino microcontroller with the help of DTMF decoder MT8870 IC the decoder decodes the DTMF tone is to its equivalent binary digit and this binary number is send to the microcontroller, the microcontroller is pre-programmed to take decision for any give input and output its …

What is DTMF controlled robot?

In DTMF based mobile/cellphone controlled robot the AVR ATmega16 microcontroller is used with keypad as the input device to drive robot in various directions. In this project two mobiles are used, one will be connected with the DTMF circuit and another will be used for calling the mobile attached with DTMF circuit.

How to connect DTMF with Arduino?

Connection Diagram Power supply pins of the module to the Arduino. Decoder output pins to any of the four digital pins of the microcontroller. Connect the StD pin to any digital pin of the Arduino. Connect the mobile dial keypad to the DTMF using an auxiliary cable.

How does Arduino work with DTMF decoder?

Arduino reads commands sent by DTMF Decoder and compare with define code or pattern. If commands are match arduino sends respective command to driver section. Driver section: driver section consists motor driver and two DC motors. Motor driver is used for driving motors because arduino does not supply enough voltage and current to motor.

How is a robot controlled using DTMF technology?

In this paper, we can control the Robot using Dual Tone Multi Frequency (DTMF) technology. DTMF technology is most useful technique at present days. It is worked on to methods digital signal processing (DSP). Wireless-control of robots uses RF circuit that has the drawbacks of limited working range and limited control.

How is Arduino used to control a robot?

Control Section: Arduino UNO is used for controlling whole the process of robot. Arduino reads commands sent by DTMF Decoder and compare with define code or pattern. If commands are match arduino sends respective command to driver section. Driver section: driver section consists motor driver and two DC motors.

What kind of circuit is used in DTMF?

Using this binary sequence, the robot is controlled. DTMF based robotic vehicle circuit consists of DTMF Decoder IC, Motor Driver IC (L293D or L298N), motors and a simple robot chassis to hold all these components. DTMF decoder IC used is HT9170B (actually a variant called CM8870 is used but the functionality is the same). It has 18 pins.