OVERVIEW:
The DIY KIT works on the concept of DTMF (dual tone multi frequency) tone command so received from any phone to remotely and control robot movement.
A cell phone is interfaced to a DTMF decoder in the system from its audio output socket for receiving tone commands. The receiving cell phone codes are converted into digital commands by using a DTMF Decoder which will identify the frequency of the key and convert that frequency to its equivalent digital code which is then fed to a microcontroller.
As per the commands sent from the sender’s mobile, the microcontroller will send signals the movement of the robot.
WORKING:
From the above block diagram,
Robot is controlled by a
mobile phone which makes a call to the mobile phone attached to the robot. In
the course of a call if any button is pressed a tone corresponding to the
button presses is heard at the other end of the call. This tone is called DTMF
tone. The robot receives this DTMF tone with help of a phone attached in robot.
The processing of the tone is done by microcontroller with help of DTMF decoder.
The decoder decodes the DTMF tone in to its corresponding binary digits and
binary number is sent to the microcontroller. The microcontroller is programmed
to take appropriate movement action for a given input. These decisions will be
used to driver the motors forward, backward, left and right via l298 motor
driver.
COMPONENTS REQUIRED:
- DTMF DECODER.
- BOT.
- Jumper wires.
- 12 DC power supply
