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EdgeTX / edgetx

EdgeTX is the cutting edge open source firmware for your R/C radio
https://edgetx.org
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Trainer Connection via MULTI Module unstable #5215

Closed ParkerEde closed 1 month ago

ParkerEde commented 2 months ago

Is there an existing issue for this problem?

What part of EdgeTX is the focus of this bug?

Transmitter firmware

Current Behavior

I have two Radiomaster TX16S with 4in1 MPM and an additional external iRange+ 4in1MPM. I would like to use the teacher/student function. The teacher radio uses the internal MPM for connection to the model with Frsky X2 EU/LBT and the external MPM as RX for the trainer signal. I have configured everything so far and it basically works. Unfortunately, the connection is extremely unstable and I keep getting continuously the message Student signal lost/reestablished. I have selected Frsky X2 EU/LBT for the trainer connection. Is this a problem with EdgeTX 2.10.1 or rather with the MPM with the current firmware 1.3.4.0?

Expected Behavior

MULTI Trainersignal should be stable

Steps To Reproduce

Trainer Radio:

  1. Use ext. 4in1 MPM as FrskyRX
  2. set Trainer Signal to MASTER/MULTI

Student Radio:

  1. Use int. 4in1MPM with Frsky X2 EU/LBT

I also used a Horus X10 Express as a student radio and the same problem occurs.

Version

2.10.1

Transmitter

RadioMaster TX16S / TX16SMK2

Operating System (OS)

No response

OS Version

No response

Anything else?

No response

3djc commented 2 months ago

If your plane is using frsky protocol, you should try something else, like spektrum, for the trainer/master connection. If that works, that would indicate more rf issues

ParkerEde commented 2 months ago

Thx @3djc, I have not been able to establish the connection with the Spektrum protocol. I don't know what I'm doing wrong, it just doesn't work. But I have now established the trainer connection via FlySky2A. That worked straight away. I now have to test it in practice. But at home on the workbench it's okay. However, I have already been able to reproduce the connection problems with the FrSkyX2 EU/LBT on the workbench at home. Does this really mean that if the int. MPM uses a Frsky X2 EU/LBT radio link, the ext. MPM cannot also use Frsky X2 EU/LBT?

3djc commented 2 months ago

There are known RF issues with certain protocols when trying to use the same in super close proximity. You may improve things with antenna positioning or similar, but using two protocols as different as possible is usually a better option

ParkerEde commented 2 months ago

okay. Thank you. I will check.

ParkerEde commented 1 month ago

with DSM for Trainer it's okay