Just have some basic questions regarding bluetooth modules for Arduino as I haven’t got any prior experience with bluetooth.
I’m looking to get a bluetooth module to be used with my Arduino Mega 2560. I see there are two options recommended on this website:
Adafruit Bluefruit LE SPI Friend
Adafruit Bluefruit LE UART Friend
If I go with the Bluefruit LE SPI module, does it mean the module can “talk” to other devices only in SPI mode (i.e. cannot support UART/serial communication at all)? Or, is there something that can be done on the code/software side to emulate UART?
Does the same apply in reverse (i.e. whether UART module can be used for SPI)?
The above modules seem to support Bluetooth 4.0. Any other recommended modules that can do Bluetooth 5.0 SPI?