HC12 - feedback

Hi all, I am playing with 2 HC12 modules like this - https://howtomechatronics.com/tutorials/arduino/arduino-and-hc-12-long-range-wireless-communication-module/

I am able to change the channel, I am able to transmit and receive data but I am concerned on how to get some feedback from them. I would like to know if they are connected for example or if they got disconnected ... Any ideea? thank you

What do you mean by 'connected' ?

That the local HC12 is physically connected to your Arduino ?

or

The remote HC12 is receiving data ?

My question is related to the connection of the 2 hc12 modules. So I want to know that the 2 modules are seeing each other.

So I want to know that the 2 modules are seeing each other.

You look to see if data is coming out of the serial port on the receiver when you send data into the serial port of the transmitter.

The best way is with an Arduino but you can use an oscilloscope.

lucian_v: My question is related to the connection of the 2 hc12 modules. So I want to know that the 2 modules are seeing each other.

To do this remotly, you need the 'receiver' to send an acknowledgement back to the 'transmitter'

HC12s dont have integral error correction, so there is no concept of being connected to each other. You would need to provide some kind of ARQ (error correction) system in software to provide this kind of information.

Thank you all. I will think on something like on which string sent to wait get back something as acknowledge ...