Is it possible to connect a speaker to the sim800l module instead of a microphone and a speaker at the same time?

Question

Arduino

The module itself has microphone and speaker outputs. Is it possible to somehow connect a speaker to both listen through it and speak? Maybe there is some kind of circuit or you can just connect directly.

Answer 1

The sound output to the speaker will go to the microphone input in this case. Unless by the type of walkie-talkie - you press the button - you speak, let go - you listen.

Answer 2

Essentially you want to short the input to the output.
You can do it, but why?

Answer 3

IMHO nonsense because the speaker will also hear himself, i.e. you dial me, I say something to you and I hear not only you but also myself, and this is without taking into account the mixing of incoming / outgoing sound. signal.

Answer 4

Can:

• so-called. "opposite scheme" (see search engines);
  
• or the "reception-transmission" switch, as 15432 writes .
  

Directly - no.