Voice Typing using Raspberry Pi and Android App

You must have familiar with Voice typing, which is very commonly used in Computers and mobiles phone, where you can type any word by speaking it. Voice typing is very useful for handicapped person or for anybody who wants to type fast. So today we are implementing the same on 16×2 LCD Display, where the voice text will be displayed on LCD. Here we have used 16×2 LCD, but this setup can be installed at many places with a bigger display to broadcast any message, like at airports, malls, offices etc.

In this project we will provide the input voice using Google Voice Keyboard via a Android App (BlueTerm) and print the text on 16×2 LCD using Raspberry Pi. Here we will type the text on 16×2 LCD using wireless Bluetooth Medium and will use USB Bluetooth dongle with Raspberry Pi. So basically we need interface the 16×2 LCD with Raspberry Pi and setup the Bluetooth in Raspberry Pi to receive the data sent by Mobile phone. Read More

Controlling Raspberry Pi GPIO using Android App

Raspberry Pi is very popular for IoT projects because of its seamless ability of wireless communication over internet. Raspberry Pi 3 has inbuilt Wi-Fi and Bluetooth, and Bluetooth is a very popular wireless communication Protocol. So today we are going to Control Raspberry Pi GPIO Pin through an Android app using Bluetooth.

Here we are using Raspberry 2 Pi Model B which don’t have inbuilt Bluetooth, so we are using a simple USB Bluetooth dongle. Apart from that we only need a resistor (220R) and a LED to demonstrate the GPIO controlling. Here we are using RFCOMM Bluetooth protocol for wireless communication.

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