Development Of The Home Appliances Controller Based On DTMF Signal

Ahmad Nawir, Nur Amalina (2017) Development Of The Home Appliances Controller Based On DTMF Signal. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

Home automation has been around from many decades in terms of lighting and simple appliances control,and only recently has technology caught up for the idea of the interconnected world,allowing full control of home from anywhere becomes reality.There are certain people that sometimes forget to turn off their home appliances before leaving the house and this can lead to wastage of energy and money.Therefore,in this project a microcontroller-based application is proposed to help the users monitor and control their house appliances from afar without physically at home just by using telephone communication line.This project is built by using the Dual-Tone Multi Frequency (DTMF) signal from telephone line produce when pressing the keypad of the telephone.This signal is then decoded into binary numbers and will be processed by the processor.It will produces output to the interfaced home appliances and switch on or off the device.This can be realized just by making a simple phone call to the landlines telephone connected to the system.This project had been verified to control the home appliances that had been limited to 4 output relays.

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