But before that, you need to connect the LCD pins with the Raspberry Pi as given below in the circuit diagram in next section. You can test the setup by running char_lcd.py example script. There are some example scripts inside the ‘examples’ folder which is present in the library folder (Adafruit_Python_CharLCD). Now the library for 16x2 LCD has been installed and you can use its functions by just importing this library in your python program using the below line: First command will clone the CharLCD repository (by Adafruit) on your Raspberry Pi, second command will take you inside that downloaded directory and finally we need to execute setup.py script, presented inside the Adafruit_Python_CharLCD directory, to install the library. To use the Adafruit Library, we first need to install it by using below commands. If you want to connect the LCD without using any external library then you can check our previous tutorials to interface the LCD in 8-bit Mode and to interface the LCD in 4-bit mode. However this Library is created by Adafruit but it can used for any LCD module which has HD44780 controller. Here in this Project we have used an external Adafruit Library for interfacing the 16x2 LCD with Raspberry Pi, using which you don’t need to write many lines of code to drive the LCD and you can directly print on LCD by just using one line of code. We already interfaced LCD with Raspberry Pi and wrote a tutorial on Bluetooth with Raspberry Pi, you can check them.īefore we proceed with Bluetooth setup, first we will interface 16x2 LCD with Raspberry Pi. So basically we need interface the 16x2 LCD with Raspberry Pi and setup the Bluetooth in Raspberry Pi to receive the data sent by Mobile phone. Here we will type the text on 16x2 LCD using wireless Bluetooth Medium and will use USB Bluetooth dongle with Raspberry Pi. In this project we will provide the input voice using Google Voice Keyboard via a Android App (BlueTerm) and print the text on 16x2 LCD using Raspberry Pi. Here we have used 16x2 LCD, but this setup can be installed at many places with a bigger display to broadcast any message, like at airports, malls, offices etc. So today we are implementing the same on 16x2 LCD Display, where the voice text will be displayed on LCD. Voice typing is very useful for handicapped person or for anybody who wants to type fast. 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.
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January 2023
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