Posts: 35 Threads: 6 Likes Received: 0 in 0 posts Likes Given: 3 Joined: Jan 2021 Reputation: 0 hi, i am new to this world of fpv and i am building my first drone. by mistake I bought a R9mm-fc-ota receiver instead of the normal R9mm-ota. I should connect it to a mambaF722 app, not seeing the normal s-bus port I ended up here and I saw that a person already had a similar problem, someone how can I do since I have an f7? fc: https://i.imgur.com/iVrntBCl.jpg r9mm-fc-ota: https://i.imgur.com/4lQeLFRl.jpg if anyone knows it would really help me, if it's something simple where I don't have to risk too much even for the other components, I do it otherwise I'll buy a new one thanks ![[-]](https://intofpv.com/images/collapse.png) • Posts: 12,099 Threads: 125 Likes Received: 3,739 in 2,836 posts Likes Given: 99 Joined: Feb 2017 Reputation: 388 (18-Jan-2021, 06:40 PM)gianlucafava Wrote: hi,
i am new to this world of fpv and i am building my first drone. by mistake I bought a R9mm-fc-ota receiver instead of the normal R9mm-ota.
I should connect it to a mambaF722 app, not seeing the normal s-bus port I ended up here and I saw that a person already had a similar problem, someone how can I do since I have an f7?
fc: https://i.imgur.com/iVrntBCl.jpg
r9mm-fc-ota: https://i.imgur.com/4lQeLFRl.jpg
if anyone knows it would really help me, if it's something simple where I don't have to risk too much even for the other components, I do it otherwise I'll buy a new one
thanks With the R9MM FC, you will use F. Port wiring. You want to use the Inv S. Port wire to a free UART TX on the Mamba. Then tell me what UART you wired to, and post a dump file. I will help you with the betaflight setup. • Posts: 35 Threads: 6 Likes Received: 0 in 0 posts Likes Given: 3 Joined: Jan 2021 Reputation: 0 (18-Jan-2021, 07:13 PM)voodoo614 Wrote: With the R9MM FC, you will use F. Port wiring. You want to use the Inv S. Port wire to a free UART TX on the Mamba. Then tell me what UART you wired to, and post a dump file. I will help you with the betaflight setup. hi, thank you so much for your help. I still have to connect the R9mm-fc to the mamba, that's my current problem; I have attached photos of what the current mamba slots look like, so you can see which ones are used. ![[Image: 69ybblTl.jpg]](https://i.imgur.com/69ybblTl.jpg) • Posts: 12,099 Threads: 125 Likes Received: 3,739 in 2,836 posts Likes Given: 99 Joined: Feb 2017 Reputation: 388 So technically you can wire to TX1, TX2 , TX3 , TX4 or TX5. Whichever one you have free. T2 is the same as TX2, this goes for the other numbers too. • Posts: 35 Threads: 6 Likes Received: 0 in 0 posts Likes Given: 3 Joined: Jan 2021 Reputation: 0 (20-Jan-2021, 02:47 AM)voodoo614 Wrote: So technically you can wire to TX1, TX2 , TX3 , TX4 or TX5. Whichever one you have free. T2 is the same as TX2, this goes for the other numbers too. I created this diagram for the connections, you think it will be fine, is that correct?  • Posts: 12,099 Threads: 125 Likes Received: 3,739 in 2,836 posts Likes Given: 99 Joined: Feb 2017 Reputation: 388 20-Jan-2021, 05:10 PM (This post was last modified: 20-Jan-2021, 05:11 PM by voodoo614.) Yes, you can wire it that way. Use these lines if you do.
serial 0 64 115200 57600 0 115200
set serialrx_provider = FPORT
set serialrx_halfduplex = ON
set serialrx_inverted = ON
Save
If you want to use the harness and the Inv S. Port then run these lines instead.
serial 0 64 115200 57600 0 115200
set serialrx_provider = FPORT
set serialrx_halfduplex = ON
set serialrx_inverted = OFF
Save
Remember to turn the serial rx off on the other UART. • Posts: 35 Threads: 6 Likes Received: 0 in 0 posts Likes Given: 3 Joined: Jan 2021 Reputation: 0 (20-Jan-2021, 05:10 PM)voodoo614 Wrote: Yes, you can wire it that way. Use these lines if you do.
serial 0 64 115200 57600 0 115200
set serialrx_provider = FPORT
set serialrx_halfduplex = ON
set serialrx_inverted = ON
Save
If you want to use the harness and the Inv S. Port then run these lines instead.
serial 0 64 115200 57600 0 115200
set serialrx_provider = FPORT
set serialrx_halfduplex = ON
set serialrx_inverted = OFF
Save
Remember to turn the serial rx off on the other UART. what do you mean by "Remember to disable serial reception on the other UART"? these lines exactly where I have to insert them on betaflight? sorry for the ignorance but it's the first time for me. • Posts: 21,258 Threads: 587 Likes Received: 8,966 in 6,634 posts Likes Given: 1,425 Joined: Jun 2018 Reputation: 788 (20-Jan-2021, 10:03 PM)gianlucafava Wrote: what do you mean by "Remember to disable serial reception on the other UART"?
these lines exactly where I have to insert them on betaflight? You need to go into the Ports tab in Betaflight Configurator and make sure that the "Serial RX" switch is at the OFF position for all UARTs except UART1. Just copy/paste the complete block of commands that Voodoo specified (including the "save" command) and paste them into the CLI text box. Then press the <ENTER> key. • |
