I'm a beginner to microcontrollers and electronics, albeit not really to computers and programming.
Starting out with the Arduino, I came to a point whereby I'm really interested in getting my prototype to talk to a mobile device or a computer to send and receive data (for example, send sensor data or receive commands).
Looking out, I've found out that there are different bluetooth modules with varying pricing points. Further research into differences did not reveal much to me as being a beginner, I am struggling to understand what to look out for or how to choose.
My question here is:
What are the fundemental differences of different Bluetooth modules for beginners, such as:
And what should one look for when buying a simple Bluetooth module for Arduino?