Uploaded September 2022 | Updated September 2026, 3 weeks ago
🔗 MrD-RC.com 🔗 patreon.com/MrD_RC
In this video we look at how to set up the trainer, also known as a buddy box, on ETHOS and OpenTX. This should also be the same on EdgeTX. I show how to make each the slave and the master, so you have all combinations on all firmware. As a bonus, there's even connecting to a different system entirely via a cable. I'm demonstrating with Spektrum. But I don't see why this would not work with other systems too.
Also, there is a public service announcement from FrSky. Some pilots who have an early X20 or X20S may experience problems when their transmitter is set up as the master over a wireless connection. I show how you can fix this situation.
✈️ Contents ✈️
00:00 Introduction
00:32 Enabling Bluetooth on OpenTX
01:33 Enabling Bluetooth on ETHOS
02:07 Setting up ETHOS as master and OpenTX as slave
02:08 - ETHOS: The model setup
02:41 - ETHOS: Setting up the Bluetooth trainer
03:03 - OpenTX: Setting up the buddy slave model
04:43 - OpenTX: Configuring the Bluetooth settings for slave
05:09 - ETHOS: Binding the master transmitter to the slave transmitter
06:48 - Demo of the trainer working
07:48 Setting up OpenTX as the master and ETHOS as the slave
07:50 - The model on OpenTX
08:31 - The model on ETHOS
08:45 - OpenTX: Setting up the Bluetooth for trainer
09:11 - ETHOS: Configuring the trainer Bluetooth settings
09:34 - OpenTX: Binding the master transmitter to the slave transmitter
10:08 - OpenTX: Assigning the switch to enable the trainer function
11:03 Reversing channels on the slave radio
11:38 Setting up using a cable
13:10 Connecting to a different system (Spektrum) via a cable
16:34 Changing the trainer channel destination to accept the channel order of the slave radio on ETHOS
20:26 What lead to use
21:04 Information about early X20 transmitters which have issues operating as a trainer master
22:27 Conclusion
Thank you for watching this video. Time is precious, so I hope that you got some benefit from this video. If you have any questions, please leave a comment and I'll do my best to answer. Please try to keep questions relevant to the video in, as they may also help others who have the same question.
✈️ In this video ✈️
⚙️ FrSky TANDEM X20S Transmitter: bit.ly/MrD_3x6n6JL
⚙️ FrSky TANDEM X18 Transmitter: bit.ly/MrD_3LD7R1j
⚙️ FrSky Horus X10S Express Transmitter: bit.ly/MrD_3l7b8K5
⚙️ FrSky SR10 Pro Receiver: bit.ly/MrD_3DFQeKF
✈️ Help other RC pilots find this video ✈️
If you found the video useful, I'd appreciate a thumbs up. This will help YouTube share this video with other RC pilots who may find it helpful. If you would like to get more videos when they become available, please subscribe and click the notifications bell icon. If there are links above, they may be affiliate links. If you click them, it will help me and my channel at no additional cost to you.
✈️ Supporting me and other resources ✈️
🛩 There are more tutorials on my web site at https://www.MrD-RC.com.
🛩 You can also join like-minded people at the Fixed Wing RC Rebels group and INAV Fixed Wing Group on Facebook.
🛩 Join the channel's discord server at discord.gg/HMvrgZX6su
🛩 Liking the video, subscribing, and clicking the bell icon can help greatly. This shows YouTube that the video is helpful, so it will be shown to more people, who may have the problem dealt with here.
🛩 If you found my video useful, you can become a Patreon at patreon.com/MrD_RC
🛩 If you prefer, you could always buy me a Coffee at mrd-rc.com/go/ko-fi
🛩 I also have merch at mrd-rc.creator-spring.com This include branded items as well as general fixed wing RC apparel.
Thank you for your time, and don't forget to fly it like you stole it!
🔗 MrD-RC.com 🔗 patreon.com/MrD_RC
In this video we look at how to set up the trainer, also known as a buddy box, on ETHOS and OpenTX. This should also be the same on EdgeTX. I show how to make each the slave and the master, so you have all combinations on all firmware. As a bonus, there's even connecting to a different system entirely via a cable. I'm demonstrating with Spektrum. But I don't see why this would not work with other systems too.
Also, there is a public service announcement from FrSky. Some pilots who have an early X20 or X20S may experience problems when their transmitter is set up as the master over a wireless connection. I show how you can fix this situation.
✈️ Contents ✈️
00:00 Introduction
00:32 Enabling Bluetooth on OpenTX
01:33 Enabling Bluetooth on ETHOS
02:07 Setting up ETHOS as master and OpenTX as slave
02:08 - ETHOS: The model setup
02:41 - ETHOS: Setting up the Bluetooth trainer
03:03 - OpenTX: Setting up the buddy slave model
04:43 - OpenTX: Configuring the Bluetooth settings for slave
05:09 - ETHOS: Binding the master transmitter to the slave transmitter
06:48 - Demo of the trainer working
07:48 Setting up OpenTX as the master and ETHOS as the slave
07:50 - The model on OpenTX
08:31 - The model on ETHOS
08:45 - OpenTX: Setting up the Bluetooth for trainer
09:11 - ETHOS: Configuring the trainer Bluetooth settings
09:34 - OpenTX: Binding the master transmitter to the slave transmitter
10:08 - OpenTX: Assigning the switch to enable the trainer function
11:03 Reversing channels on the slave radio
11:38 Setting up using a cable
13:10 Connecting to a different system (Spektrum) via a cable
16:34 Changing the trainer channel destination to accept the channel order of the slave radio on ETHOS
20:26 What lead to use
21:04 Information about early X20 transmitters which have issues operating as a trainer master
22:27 Conclusion
Thank you for watching this video. Time is precious, so I hope that you got some benefit from this video. If you have any questions, please leave a comment and I'll do my best to answer. Please try to keep questions relevant to the video in, as they may also help others who have the same question.
✈️ In this video ✈️
⚙️ FrSky TANDEM X20S Transmitter: bit.ly/MrD_3x6n6JL
⚙️ FrSky TANDEM X18 Transmitter: bit.ly/MrD_3LD7R1j
⚙️ FrSky Horus X10S Express Transmitter: bit.ly/MrD_3l7b8K5
⚙️ FrSky SR10 Pro Receiver: bit.ly/MrD_3DFQeKF
✈️ Help other RC pilots find this video ✈️
If you found the video useful, I'd appreciate a thumbs up. This will help YouTube share this video with other RC pilots who may find it helpful. If you would like to get more videos when they become available, please subscribe and click the notifications bell icon. If there are links above, they may be affiliate links. If you click them, it will help me and my channel at no additional cost to you.
✈️ Supporting me and other resources ✈️
🛩 There are more tutorials on my web site at https://www.MrD-RC.com.
🛩 You can also join like-minded people at the Fixed Wing RC Rebels group and INAV Fixed Wing Group on Facebook.
🛩 Join the channel's discord server at discord.gg/HMvrgZX6su
🛩 Liking the video, subscribing, and clicking the bell icon can help greatly. This shows YouTube that the video is helpful, so it will be shown to more people, who may have the problem dealt with here.
🛩 If you found my video useful, you can become a Patreon at patreon.com/MrD_RC
🛩 If you prefer, you could always buy me a Coffee at mrd-rc.com/go/ko-fi
🛩 I also have merch at mrd-rc.creator-spring.com This include branded items as well as general fixed wing RC apparel.
Thank you for your time, and don't forget to fly it like you stole it!










