RX8R pro firmware problem

[Steve C]

I've been trying to get 2 RX8R pro to connect with RB20. With the latest firmware 2.1.1, it only works if I leave one smart port unplugged. As soon as I plug both in, I only get a green light on rx1. I swapped in 2 X8R's just to see if the problem is with RB20 and it worked perfectly.

I'd like to be using the latest firmware, but this obviously has a problem. How difficult is it to get Frsky to check this out and generate new firmware?

 

[Steve C]

Well if anyone cares, I'm certain now that there's a problem with the RB20. I switched to 2 x8Rs and even used a different tx. All seemed ok, but after about a 10 minute flight, the servos started twitching. Was fortunate to get the plane on the ground ok. The servos spasms got pretty bad by the time I got inside to look at the status lights on the rxs. They were still green. Rebooting made everything normal again.

 

[HENNY]

I've been trying to get 2 RX8R pro to connect with RB20. With the latest firmware 2.1.1, it only works if I leave one smart port unplugged. As soon as I plug both in, I only get a green light on rx1. I swapped in 2 X8R's just to see if the problem is with RB20 and it worked perfectly.

I'd like to be using the latest firmware, but this obviously has a problem. How difficult is it to get Frsky to check this out and generate new firmware?

I don't have the RB20 but the RX8R antennas are very close to your servo cables which could cause the servo twitching. I would rotate the RX 90 deg and run the antenna wires as far away as possible from the RB20 , even extend the S-port cable to allow at least 6 to 8 inches away. RF from the antennas that close could be the servo interference issue. Lastly I don't see the un-screened antenna end, did you cut it off or is that black heat shrink over the end.

 

[Steve C]

..

 

[Steve C]

The antennas came with black shrink on them.

Thanks for the idea on proximity. It's interesting that it works perfectly fine for about 10-15 minutes before having an issue. Also strange it that all of the servo movement stops as soon as I cycle the power switches.

I'm going to put it together and see if I can get it to act up without flying.