Lora RA-02 modules not receiving anything

[CristyRO9]

Hello! I have2 Ra-02 modules, one configured as a receiver and one as a transmitter, they are each connected to an Arduino Mini Pro 3.3v board, programmed using and usb to ttl converter, they have 433mhz antennas, they are powered by a 3.3v regulator that claims to output around 2A. The problem is that I do not receive anything on the serial monitor of the receiver board, it just prints "LoRa Receiver", at the beginning I could receive some garbage data, but NOW I can't receive anything.... I soldered all the GND together, tried to change them between one and another, programming the TX as an RX and the RX as and TX but the problem still persists, they are configurated at the 433000000 frequency. The sender/transmitter starts correctly and sends messages. What can I do?

[sercero]

Hello, I have a very similar setup and noticed that the Arduino and the RA-02 module should have a common GND connection.

Try to start by powering the RA-02 module with the Arduino VCC to see if at least you can initialize the module.

Check out this site for a proper setup: https://docs.ai-thinker.com/en/lora/man