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Voice Recognition System Using Arduino

we are going to demonstrate you Voice Recognition System using Arduino. Here we are using one smartphone App to recognize the voice.

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Introduction to Our Project:

In this project we are using Arduino, Bluetooth Module(HC-05) and Smart phone. Here we are going to recognize our voice through one smartphone App and for that purpose we have connected one led to pin number 13 of arduino. So first we have to connect our app to Arduino through HC-05 bluetooth module. So we have to enable our bluetooth in smartphone and then we have to connect to Arduino through HC-05. After getting the successful connection when we'll open that app and we will say 'switch on the light' (as we have written in our code) so our led will turn on and if we say 'switch off the light' so our led will turn off. So you can say anything as you have to modify your code for that and also you can control anything even any electrical appliances as well. Here we have chosen one led for that

Component Used:


1)LED with 1k resistor

2) Arduino UNO

3) HC-05 Serial Bluetooth Module

4) Jumper Cables

1) Arduino UNO: Arduino/Genuino Uno is a microcontroller board based on the ATmega328P (datasheet). It has 14 digital input/output pins (of which 6 can be used as PWM outputs), 6 analog inputs, a 16 MHz quartz crystal, a USB connection, a power jack, an ICSP header and a reset button.

2) HC-05 Bluetooth Module: HC‐05 module is an easy to use Bluetooth SPP (Serial Port Protocol) module,designed for transparent wireless serial connection setup.The HC-05 Bluetooth Module can be used in a Master or Slave configuration, making it a great solution for wireless communication.This serial port bluetooth module is fully qualified Bluetooth V2.0+EDR (Enhanced Data Rate) 3Mbps Modulation with complete 2.4GHz radio transceiver and baseband. It uses CSR Bluecore 04‐External single chip Rluetooth system with CMOS technology and with AFH (Adaptive Frequency Hopping Feature).

  • 1 × Arduino Uno
  • 1 × HC-05 Serial Bluetooth Module

  • Here are the Steps

    Deligence Technologies09/19/2017 at 07:39 0 comments

    Software Used:

    Installation of Arduino IDE: You can download the latest version of Arduino IDE from the below link-

    https://www.arduino.cc/en/Main/Software



    we are using one smartphone app named AMR_Voice. Here below is the link to download

    https://play.google.com/store/apps/details?id=robo...

    Circuit Diagram:

    Here you can see how hc-05 and one single led is connected to Arduino uno. You have to make sure one thing that Tx of HC-05 should be connected to Rx of Arduino and Rx of Hc-05 is connected to Tx of Arduino.

    VCC(HC-05)--------------------5V of Arduino(3.3V of Arduino),

    GND(HC-05)--------------------GND of Arduino

    Rx(HC-05)-----------------------Tx of Arduino

    Tx(HC-05)------------------------Rx of Arduino


    Code and Video:

    Here you can go through the video of this project.

    And you can get the code in our github repository here

    If have any doubt regarding this project feel free to comment us below or you can mail us on info@deligence.com And if you want to learn more about these type of project then feel free to visit our youtube channel

    Thanks & Regards,

    Deligence Technologies


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