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DTMF based Mobile/Cellphone Controlled Robot with ATmega16
Conventionally, Wireless-controlled robots use RF circuits, which have the drawbacks of limited working range, limited frequency range and the limited control. Use of a mobile phone for robotic control can overcome these limitations. It provides the advantage of robust control, working range as large as the coverage area of the service provider, no interference with other controllers.
In this project, we will learn How to design a DTMF based mobile/cellphone controlled robot with AVR ATmega16 microcontroller. Here, we will use mobile keypad as the input device to drive the robot in different direction. In this project, we will use two mobiles, one will be connected with the DTMF circuit and another will be used to call the mobile attached with DTMF circuit. The Mobile attached with DTMF circuit will be kept in auto-answering mode. The robot can be controlled from mobile attached to the DTMF circuit by pressing its keys and from any other mobile by calling to the mobile attached with DTMF circuit and pressing keys from the calling mobile keypad. The ATmega16 microcontroller will read the 4-bit output signal of DTMF decoder and it will process it to know which key of the mobile keypad is pressed. After knowing which key of the mobile keypad is pressed, the ATmega16 microcontroller will send the required control signal to the DC motor driver (L293D) of the robot to drive the robot in the desired direction. The control keys for the robot are 2, 8, 4, 6 and 5 to drive the robot in forward, backward, left, right direction and to stop it respectively. Now, press different keys from both the mobile and drive your robot as you want.
|
Control Keys |
Robot Direction |
|
2 |
Forward |
|
4 |
Left |
|
6 |
Right |
|
8 |
Backward |
|
5 |
Stop |
Softwares Required
Hardwares Required
| Name | Quantity |
AVR Trainer Board-100 with ATmega16
|
1pc |
AVR USB Programmer
|
1pc |
12V, 1A DC SMPS Adaptor
|
1pc |
DC Motor Driver
|
1pc |
Robot V 4.1
|
1pc |
DTMF Decoder
|
1pc |
3.5mm Audio Jack with Connector
|
1pc |
1 to 1 Connector-Female to Female
|
1pc |
10 to 10 FRC Female to Female Connector
|
3pc |
Circuit Diagram
Video
Connection Guide
The step-by-step connection guide for DTMF based Mobile/Cellphone Controlled Robot with ATmega16 is as follows
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Steps - 1 ( 0f 11 )
Insert the DC Pin of 12V, 1A DC Adapter to the DC Socket of AVR Trainer Board-100.
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Steps - 2 ( 0f 11 )
Connect PortB header of AVR Trainer Board-100 with Input header of DC Motor Driver with a 10 to 10 FRC Female Connector.
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Steps - 3 ( 0f 11 )
Connect the 12V pin of PWM & Motor Voltage header of DC Motor Driver with the 12V header of AVR Trainer Board-100 with a 1 to 1 Connector.
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Steps - 4 ( 0f 11 )
Connect the Robot connector to the Output header of the DC Motor Driver.
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Steps - 5 ( 0f 11 )
Switch off the Mode Switch of DC Motor Driver.
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Steps - 6 ( 0f 11 )
Connect the PortD header of AVR Trainer Board-100 with the DTMF header of DTMF Decoder with a 10 to 10 FRC Female Connector.
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Steps - 7 ( 0f 11 )
Connect the ISP header of AVR Trainer Board-100 with AVR USB Programmer header of AVR USB Programmer with a 10 to 10 FRC Female Connector.
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Steps - 8 ( 0f 11 )
Connect the AVR USB Programmer to the PC/Laptop's USB Port directly or with the help of USB AM-AF Cable.
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Steps - 9 ( 0f 11 )
Switch on the power with the help of Power Switch of AVR Trainer Board-100.
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Steps - 10 ( 0f 11 )
Download DTMF based Mobile/Cellphone Controlled Robot with ATmega16 Hex file to AVR Trainer Board-100 with the help of SinaProg Hex downloader and AVR USB Programmer.
-
Steps - 11 ( 0f 11 )
Press different keys from the mobile and see the output.
Downloads
DTMF based Mobile/Cellphone Controlled Robot with ATmega16 Project File
- 8 downloads 0 Kb
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