USB to UART Converter is a very useful tool for Embedded Systems. If you haven’t one, please try to buy it. It will definitely boost development speed of projects which uses UART modules like interfacing GSM, GPS, Bluetooth, Wi-Fi … By using it we can easily study these modules by sending data directly from your PC and analyzing the received data in your computer display without programming a microcontroller. Here we will use PL2303, one of the most popular USB to UART Converter manufactured by Prolific Technology Inc.
Before starting using UART, you need to install driver for PL2303. You can install driver in two ways. If your system is connected to internet, you can install driver using windows update otherwise you need to download the driver setup file and install it. First we will see, installing driver using windows update.
If your system has no internet connection, you can follow this method. But you still need to download driver setup files form some other computer which has internet connection.
After completing the installation in any of the above methods, verify that the device is working fine and note the COM port number using the Device Manager.