Model ID in ETHOS

[gregg]

I registered and bound 3 Archer rxs on my Tandem X20 in one session, and the rxs all work as expected. However in this process I inadvertently left the model ID on its default value of 0. All 3 rxs had mode ID of 0. I edited the model ID so the rxs had ID 1,2 and 3 respectively, however changing the model ID causes the rxs to fail to connect to the tx. When I changed the model ID back to 0, all 3 rxs again worked.

Does the fact that all 3 rxs have model ID of 0 matter? I would appreciate suggestions on how should I proceed.

 

[2MUCH2DO]

Rebind them after you change the id I believe

 

[HENNY]

Yes simply changing the ID number on the TX has not changed the receiver number it knows about. So re binding will also update the receiver ID number. In the Spektrum world having the same ID number was called model match. Its risky because two models will react to your transmitter at the same time. We had one person at our field who forgot to remove a battery from a model and when he went to fly a second model the first model also tried to take off in the pitts.

 

[gregg]

thanks for this.
Like Henny said, after installing my rxs in 2 models, if I turn both models on, then the throttle will start both motors simultaneously. I have rebound two of the rxs, and will soon do the third.

re "re binding will also update the receiver ID number". Agreed, I believe the receiver ID no. is the number the model ID no. is set to when registration/binding is done. Setting the model ID does not happen automatically, you need to enter a unique number for model ID before you register/bind. Then this is the receiver no.

The 8 page manual that comes with the Tandem x20 is a little unclear on this point "the system will assign the receiver a number automatically when you create a new model". This must be a preliminary receiver number, that will be changed to the final receiver number that is created when you bind.

 

[gregg]

As noted above, I had 3 archer rxs with model id of 0. (I believe the model id is also the receiver id.)
Each rx was assigned to its plane. For plane 1 and plane 3, the rx was easily removed, and I did a re-registration and re-bind, with the model id set correctly. No problem. For plane 2, the rx was buried in the plane, so I tried re-binding the rx without removing it from the model to re-register it. First I simply tried a re-bind without a re-register and without changing the model id which was on 0. That worked, so I then repeated the re-bind with model id set to 2. It worked! So I finally can see some benefit from the upgraded ETHOS registration and binding system.