In manual it’s possible, i’ve set RC_OPTIONS bit 10
https://ardupilot.org/copter/docs/common-multiple-rx.html
But i’m still getting error: PreArm: Multiple SERIAL ports configured for RC in
Which Flight Controller do you have?
Holybro Pixhawk 6C
20 chars…
So you have one receiver connected to the standard RCIN port and the 2nd connected to a serial port and only that serial port protocol is set to 23?
i want to have 2 RCIN ports to be set to 23, is that possible?
No. That’s not how it works. The primary Rx is on the IOMCU (RCIN port) and the 2nd one is on a serial port. You can only have one serial port selected for protocol 23. And why would you want to do that anyway?
I have same problem, pix2.4.8 detects both RCin SBUS and serial2-23 , RC_OPT. bit10 set, can’t ARM because of " PreArm: Multiple SERIAL ports configured for RC in"
When I configure that on the bench with a Pixhawk I don’t see that error message.
RC_OPTIONS is a bitmask, so you must add 1024 to whatever is already there to properly set bit 10.
It’s a common misconception that you simply make the parameter value “10,” which is patently wrong.
So, to enable default arming behavior plus multiple receiver support, you’d set RC_OPTIONS=1056.
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23/01/2024 9:26:51 : Frame: HELI
23/01/2024 9:26:51 : IMU0: fast sampling enabled 8.0kHz/1.0kHz
23/01/2024 9:26:51 : RCOut: PWM:1-14
23/01/2024 9:26:51 : mRoX21 001B002F 30375105 36383839
23/01/2024 9:26:51 : ChibiOS: 17a50e3a
23/01/2024 9:26:51 : ArduCopter V4.4.4 (db53a28f)
23/01/2024 9:26:49 : PreArm: Multiple SERIAL ports configured for RC in just tried again
You said it was a Pixhawk 2.4.8. Which Pixhawk 2.4.8 is it? Those use either fmuv3 or Pixhawk1 unless it’s a Radiolink FC, then throw it in the trash. And it’s Heli and you posted in Copter.
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Today tried two RC links (SBUS+CRSF) on CubeOrange - works without warning with settings copied from older PixHawk