Voice Controlled Arduino Smart Home - Without Wire

Just say the needed temperature, control your home with voice or Android! Two units on synched Bluetooth link, RFID functions...

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A full home automation Arduino project with voice control - without wires. I designed, built and programmed it in my style, following only my own fantasy. Every each parts are handmade.


The system controls the heater gas boiler, the lights in the flat, the airing fan and my media player.

There are two autonomous Arduino-based units communicating on a synchronized Bluetooth link. They connecting and synchronizing each other automatically, so there is no outdated or missing information on the screens.

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  • 1 × Arduino Mega 2560 & Genuino Mega 2560
  • 1 × Arduino Nano R3
  • 1 × RFID IC, 13.56 MHz
  • 1 × HC-05 Bluetooth Module
  • 1 × Temperature Sensor

View all 7 components

View project log

  • 1
    Step 1

    The whole system can be locked with RFID card – I designed a fully functional RFID card handler for it.

    And yes, the Central Unit talks! Says a greeting message when I connect, what’s more it laughs at me if I try to unblock it with an unlisted RFID card for instance.

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Technical RC Sharma wrote 07/09/2020 at 05:09 point

Authenticating an Android user

After connecting, the user has to send „hi” first, as "Two-factor authentication" - with the Bluetooth PIN code. Otherwise the user will not receive any information and unable to send commands.

If the user sends anything else instead of 'hi', will be disconnected immediately.

If we send „bye”, the system will also disconnect us, but a voice command „System - Disconnect” will do the same.

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