# binding reciever to external 900mhz module

Source: https://forum.modalai.com/topic/2494/binding-reciever-to-external-900mhz-module
Category: Development Drones (https://forum.modalai.com/category/44/development-drones)
Tags: starling
Posted: 2023-07-27 02:48:59 UTC by cantfaxglitter
Replies: 2 · Views: 1252

## cantfaxglitter · 2023-07-27 02:48:59 UTC

Using taranis x9d+ 2019 with betafpv micro 900mhz external module.
1. Updated OpenTX to 2.3.14, set external module to crsf https://oscarliang.com/setup-expresslrs-2-4ghz/#Download-ExpressLRS-Configurator
2. Followed instructions, reciever went into bind mode https://www.google.com/url?q=https://www.youtube.com/watch%3Fv%3D7OwGS-kcFVg&sa=U&ved=2ahUKEwjyjZO5762AAxWRElkFHV8BCtAQtwJ6BAgGEAE&usg=AOvVaw1VeFRqtAwILSbUS2Pxcvnk
3. When running elrs lua script on taranis no bond, just cycles through attempt and stops
4. I tried matching the elrs settings I could see in video but its possible I missed something.

Looking to see if anyone has run into this and has any ideas.

## Reply by Jacob Camarillo (ModalAI staff) · 2023-07-27 17:27:41 UTC

@cantfaxglitter Hi, what version of ELRS is currently on your transmitter? Also, what version of ELRS is currently loaded on your betafpv receiver? You can run the command voxl-elrs --version and it will give you the firmware version for the receiver. This sounds like it could be mismatched versions of ELRS between the transmitter and the receiver, they both need to be on version 3+

## Reply by cantfaxglitter · 2023-07-28 00:39:35 UTC (in reply to Jacob Camarillo)

@Jacob-Camarillo it was the transmitter FW version, shouldn't troubleshoot late at night...... up and running