Hi, I wanted to know if the Arduino opta can communicate with another Arduino opta wirelessly and without the Internet via radio frequency or Bluetooth. and also if you have already implemented the modules to do so or if I have to install, for example, an external RF antenna
Hello @antoniopallotta2001 ,
The Communication section of the Arduino Opta user manual presents the different options that can be considered: https://docs.arduino.cc/tutorials/opta/user-manual/#communication.
If you plan to use Bluetooth Low Energy®, no external antenna is required.
Best,
No , maybe I expressed myself wrongly . For example to make two Arduino one R3 communicate by radio I need a module with an external antenna , like this one in the picture .
Arduino opta already has integrated this module for radio communication or not, because looking at the datasheets and information in the forum I couldn't figure it out