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DTMF Home Automation System This project is about controlling of home appliances using DTMF (Dual Tone Multi...

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Electrical Engineering

DTMF Home Automation System

This project is about controlling of home appliances using DTMF(Dual Tone Multi Frequency) technology. These appliances includeslights, fans, central heating, etc. A control unit will be requiredto encode the 4bit binary code from the DTMF decoder to link with16 appliances or operations. However anyone can control yourappliances if they know the cell number of the phone connected tothe module. Furthermore, the number of appliances is limited to 16,which is the number of DTMF tones. These problems can be solved byusing a controller at both transmit and receive end, and introducea digital code. Now it will be possible to use more than one toneper command. For example, using 2 tones will give 16x16 =256commands. A duplex operation can now be possible.

I need help Designing the DTMF Home Automation System using anArduino.

I need the source code and circuit

Answer & Explanation Solved by verified expert
3.6 Ratings (286 Votes)
Platform assemblyNow you need to tight Arduino board relay board DTMF board tothe appropriate place with the boltsMake connection as shown inthe above figureThe source code will be for the 4 home appliancesSource codeconst int Q1 8 Defining Digital Input Pins from DTMF Moduleconst int Q2 9const int Q3 10const int Q4 11const int D1 4 Defining Digital output Pins for Relay Boardconst int D2 5const int D3 6const int D4 7int SoQ1 0 Defining variable to store the statusHIGHLOW of above inputsint SoQ2 0int SoQ3    See Answer
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