Hi everyone!

I have a problem with the OpenTX LUA script to configure Betaflight settings. I feel like I have everything right, but the LUA script doesn't work for me and it always freezes in initialization state.

I'm on OpenTX 2.3.13 in TX16S, Betaflight LUA 1.5.0, ExpressLRS HM EP1 receiver, Zeus F722 Mini FC and DJI Vista VTx. This configuration works great, including telemetry, I have flown with it for many hours.

And now how does the LUA script behave:
After turning on the transmitter and connecting the battery to the ESC, everything works as it should, in a moment I have all the telemetry data on the transmitter from the amount of current, through RQLY to GPS coordinates.
After activating the LUA script, nothing happens other than that Initializing ... appears on the display and this state freezes. In a few tens of seconds, the individual sensors are gradually lost until all telemetry is lost. Subsequently, the connection with Rx fails. In order to control the drone, I have to restart everything, including the transmitter.

Does anyone have a similar experience? I followed the instructions, but have no luck. Thanks for advice.
Momo

I don't have ELRS yet to give you any solid advice but have you read the following ELRS WIKI (MSP section): https://github-wiki-see.page/m/ExpressLR...ight-Setup

Quote:MSP
To configure betaflight from your transmitter it's possible to use the betaflight lua scripts. This requires the telemetry feature enabled for the RX+TX. If the telemetry page of OpenTx does not show regular updates for all sensors the LUA script will also not work.

Mavlink is not supported and currently not planed to be added.

To get a responsive UI configure ExpressLRS for fast data transfer so make sure to use something like 200Hz/250Hz with 1:2 tlm and a serial baud rate of 400000. The initial VTX tables download does take long - but is cached after that.

If you get a "retrying" message while saving changes it means that the lua script did not receive a response fast enough. But the change usually still goes through so try reloading the page to check if the change was saved. With the recommended settings this does not happen but with slower settings it could happen.

Well yeeeeee ...
Good point Kafie ... and thank you for pointing me out ...
With proper ERLS link settings it works now and this is clearly the problem of ERLS downlink setting.

For LR flights I am using this ERLS setting: 150 Hz (-112 dBm) packet rate and 1:64 (47 bps) ratio for downlink (telemetry ratio). It does not work with this setting in any case. Downlink has a very small packet rate with this setting and initialization will probably go into timeout. The smallest packet rate at which initialization takes place is a 1:16 ratio for 150 Hz, which corresponds to a data rate of 281 bps. Initialization takes place, but loading menu items is very slow with a delay of a few seconds, however it works. In order to work normally with an Betaflight LUA script without annoying delay, the bit rate must be much larger, at least 1:4 at 150 Hz, which is 1421 bps.

Thanks again
Cheers
Momo