The HC-05 Bluetooth module is the most economical and easiest way to go wireless (via Bluetooth).
This module makes it easy for you to wirelessly extend your serial interface, so you can control any program running on your Laptop with serial port interface.
The 4 pins are:
- VCC (Power 3.3 – 6V);
Default pairing code: 1234
Default baudrate: 9600
Usually this Bluetooth module is used with the Arduino, but it can be used with others microcontrollers devices. Here it’s how it’s wired with an Arduino:
So if you’re looking for a good way to communicate to your Arduino trough bluetooth this is a good way. I’ve already made a tutorial using this particular one and I’ll be doing more and the internet is full of tutorials using this exact model.
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