Hello! I'm very very new to Arduino and I need help for my final year project. I am currently working on a machine that needs to communicate to another machine via bluetooth.
The first machine already has a bluetooth module connected to an Arduino Mega as a slave to a mobile phone and after further research, I can't make the bluetooth module as a Master and a Slave concurrently. The idea I had in mind was to use two bluetooth modules in one machine so that it can become a slave to the mobile phone and the master to the second robot.
However, after much wiring, I realised that I can't put two bluetooth modules on the Arduino Mega as the bluetooth module that I'm currently using only uses 3.3V. I put a broadboard beside the Mega so that the 3.3V and the Ground has 'more ports' but when I try to connect to the bluetooth module, it does not work. I'm using the other ground and 5.5V connection for other Arduino modules.
I am thinking of getting another Arduino board so that the master Bluetooth module will be a standalone. Is it a good idea?
If not, does anyone else has other ideas? I can only use Bluetooth connection and using RF/WiFi is out of the window
Many thanks in advance!!
(pls help me I'm totally new to Arduino and I created an account just to ask this)