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DTMF and BT136 Triac based Mobile/Cellphone Controlled Home Automation System with ATmega32-II

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In this project, we will learn How to design a DTMF and BT136 Triac based mobile/cellphone controlled home appliances system with AVR ATmega32 microcontroller Part-II. Here, we will use mobile keypad as the input device to control the appliances i.e. 2 bulbs and 2 fans.

In our project, we will use two mobiles, one will be connected with the DTMF circuit and another will be used to call the mobile attached to 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 to DTMF circuit and pressing keys from the calling mobile keypad.

The ATmega32 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 ATmega32 microcontroller will send the required control signal to the Quad Triac Driver to turn on and off appliances.

Here, we will use one key of the mobile keypad to control one appliance. Same key will be used to turn on and off the appliance. Each time we press the same key, the appliance changes its status. So, for four appliances, we will use 4 keys of the mobile keypad. Apart from these 4 keys, we will use 2 more keys to turn on and off all appliances at a time. Now, press different keys from both the mobile and control your appliances as you want.

Control Keys

Appliance Status Change

1

Appliance 1 On/Off

2

Appliance 2 On/Off

3

Appliance 3 On/Off

4

Appliance 4 On/Off

5

All Appliances On

6

All Appliances Off

Softwares Required

Hardwares Required

Name Quantity
AVR Trainer Board-100 with ATmega32 1pc
AVR USB Programmer 1pc
12V, 1A DC SMPS Adaptor 1pc
Quad Triac Driver 1pc
DTMF Decoder 1pc
Home Appliance Board 1pc
3.5mm Audio Jack with Connector 1pc
1 to 1 Connector-Female to Female 6pc
10 to 10 FRC Female to Female Connector 2pc

Circuit Diagram

Video

Connection Guide

The step-by-step connection guide for DTMF and BT136 Triac based Mobile/Cellphone Controlled Home Automation System with ATmega32-II is as follows

  • Steps - 1 ( 0f 12 )

    Insert the DC Pin of 12V, 1A DC Adapter to the DC Socket of AVR Trainer Board-100.

  • Steps - 2 ( 0f 12 )

    Connect the 5V and GND pins of Triac Control header of Quad Triac Driver with the 5V and GND pins of 5V and GND header of AVR Trainer Board-100 with 1 to 1 Connectors.

  • Steps - 3 ( 0f 12 )

    Connect the A1, A2, A3 and A4 pins of Triac Control header of Quad Triac Driver with PB0, PB1, PB2 and PB3 pins of PORTB header of AVR Trainer Board-100 respectively with 1 to 1 Connectors.

  • Steps - 4 ( 0f 12 )

    Connect the Neutral and Phase of AC Supply from Wall to N and PH of AC Input Terminal Blocks of Quad Triac Driver with wires.

  • Steps - 5 ( 0f 12 )

    Connect the Neutrals of 2 Bulbs and 2 Fans to the N pin of AC Output Terminal Blocks of Quad Triac Driver with wires.

  • Steps - 6 ( 0f 12 )

    Connect the Phases of 2 Bulbs and 2 Fans to the PH1, PH2, PH3 and PH4 pins of AC Output Terminal Blocks of Quad Triac Driver respectively with wires.

  • Steps - 7 ( 0f 12 )

    Connect the PortD header of AVR Trainer Board-100 with the DTMF header of DTMF Decoder with a 10 to 10 FRC Female Connector.

  • Steps - 8 ( 0f 12 )

    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.

  • Steps - 9 ( 0f 12 )

    Connect the AVR USB Programmer to the PC/Laptop's USB Port directly or with the help of USB AM-AF Cable.

  • Steps - 10 ( 0f 12 )

    Switch on the power with the help of Power Switch of AVR Trainer Board-100.

  • Steps - 11 ( 0f 12 )

    Download DTMF and BT136 Triac based Mobile/Cellphone Controlled Home Appliances System with ATmega32-II Hex file to AVR Trainer Board-100 with the help of SinaProg Hex downloader and AVR USB Programmer.

  • Steps - 12 ( 0f 12 )

    Press different keys from the mobile and see the output.

  • Insert the DC Pin of 12V, 1A DC Adapter to the DC Socket of AVR Trainer Board-100.

    Steps - 1 ( 0f 12 )

  • Connect the 5V and GND pins of Triac Control header of Quad Triac Driver with the 5V and GND pins of 5V and GND header of AVR Trainer Board-100 with 1 to 1 Connectors.

    Steps - 2 ( 0f 12 )

  • Connect the A1, A2, A3 and A4 pins of Triac Control header of Quad Triac Driver with PB0, PB1, PB2 and PB3 pins of PORTB header of AVR Trainer Board-100 respectively with 1 to 1 Connectors.

    Steps - 3 ( 0f 12 )

  • Connect the Neutral and Phase of AC Supply from Wall to N and PH of AC Input Terminal Blocks of Quad Triac Driver with wires.

    Steps - 4 ( 0f 12 )

  • Connect the Neutrals of 2 Bulbs and 2 Fans to the N pin of AC Output Terminal Blocks of Quad Triac Driver with wires.

    Steps - 5 ( 0f 12 )

  • Connect the Phases of 2 Bulbs and 2 Fans to the PH1, PH2, PH3 and PH4 pins of AC Output Terminal Blocks of Quad Triac Driver respectively with wires.

    Steps - 6 ( 0f 12 )

  • Connect the PortD header of AVR Trainer Board-100 with the DTMF header of DTMF Decoder with a 10 to 10 FRC Female Connector.

    Steps - 7 ( 0f 12 )

  • 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.

    Steps - 8 ( 0f 12 )

  • Connect the AVR USB Programmer to the PC/Laptop's USB Port directly or with the help of USB AM-AF Cable.

    Steps - 9 ( 0f 12 )

  • Switch on the power with the help of Power Switch of AVR Trainer Board-100.

    Steps - 10 ( 0f 12 )

  • Download DTMF and BT136 Triac based Mobile/Cellphone Controlled Home Appliances System with ATmega32-II Hex file to AVR Trainer Board-100 with the help of SinaProg Hex downloader and AVR USB Programmer.

    Steps - 11 ( 0f 12 )

  • Press different keys from the mobile and see the output.

    Steps - 12 ( 0f 12 )

Downloads

DTMF and BT136 Triac based Mobile/Cellphone Controlled Home Automation System with ATmega32-II
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