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Relay based 4X4 Keypad Controlled Home Automation System with ATmega16-II
In this project, we will learn How to design a relay based 4X4 keypad controlled Home Automation system with AVR ATmega16 microcontroller Part-II. Here, we will use the 4X4 keypad as the input device to control the appliances i.e 2 bulbs and 2 fans.
The ATmega16 microcontroller will read the 4X4 keypad output. After reading the 4X4 keypad output, the ATmega16 microcontroller will process the keypad output value to find pressed key value. According to the pressed key value, the ATmega16 microcontroller will send the required control signal to the Quad Relay Driver to turn on and off appliances.
Here, we will use one key of the 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 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 of the 4X4 keypad and control your appliances.
|
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 ATmega16
|
1pc |
AVR USB Programmer
|
1pc |
12V, 1A DC SMPS Adaptor
|
1pc |
Quad Relay Driver
|
1pc |
4X4 Keypad
|
1pc |
Home Appliance Board
|
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 Relay based 4X4 Keypad Controlled Home Automation System with ATmega16-II is as follows
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Steps - 1 ( 0f 12 )
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 12 )
Connect the 12V and GND pins of Relay Control header of Quad Relay Driver with the 12V and GND pins of 12V and GND header of AVR Trainer Board-100 with 1 to 1 Connectors.
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Steps - 3 ( 0f 12 )
Connect the A1, A2, A3 and A4 pins of Relay Control header of Quad Relay Driver with PB0, PB1, PB2 and PB3 pins of PORTB header of AVR Trainer Board-100 respectively with 1 to 1 Connectors.
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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 Relay Driver with wires.
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Steps - 5 ( 0f 12 )
Connect the Neutrals of 2 Bulbs and 2 Fans to the N pin of AC Output Terminal Blocks of Quad Relay Driver with wires.
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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 Relay Driver respectively with wires.
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Steps - 7 ( 0f 12 )
Connect PortC header of AVR Trainer Board-100 with Keypad header of 4X4 Keypad with a 10 to 10 FRC Female Connector.
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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.
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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.
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Steps - 10 ( 0f 12 )
Switch on the power with the help of Power Switch of AVR Trainer Board-100.
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Steps - 11 ( 0f 12 )
Download Relay based 4X4 Keypad Controlled Home Automation System with ATmega16-II Hex file to AVR Trainer Board-100 with the help of SinaProg Hex downloader and AVR USB Programmer.
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Steps - 12 ( 0f 12 )
Press different keys of the 4X4 keypad and see the output.
Downloads
Relay based 4X4 Keypad Controlled Home Automation System with ATmega16-II Project File
- 1 downloads 0 Kb
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