Nowadays, with increasingly sophisticated technology, many creators of tools use technology to create something useful and easy for its users. One of them is Bluetooth, even now many are developing into modules. To be able to communicate with Arduino, there are already types of Bluetooth modules on the market, namely HC-05 and HC-06. Please select a Bluetooth modules for Arduino type. Most of what we know about Bluetooth, of course, is the ability to send files, as well as a tool to exchange files wirelessly. However, this module can be used to replace wired serial communication with wireless. This module can easily replace the existing serial communication modules in the system. In this case, you do not need additional hardware at all
There are various kinds of Bluetooth modules that you can choose from, but of course, each module has different contents. For those of you who intend to make a purchase, there is your backyard to read in more detail.