"I ran into a similar problem trying to hook my arducopter build into a Feiyu Mini 3D 

You need to be running release 3.3 to get the extra support for channels 9-12.  That frees you up to use SBUS or any 12 channel rx.

If you don't have that, then…"

"Necro bump, but I figured I'd add my solution to the pile since this post is at the top of Google search for the same problem I was having.  These were v1 radios and this was with an APM 2.5 board.  Both radios showed up in 3dr radio configuration,…"

"Going back a few years now from when this happened but the firmware developer had released a patch that fixed this problem.  I've since moved on to a different flight controller though."

"I invested in RFExplorers when they initially came out and used them to troubleshoot a lot of EMI issues.  After spending a hundred hours scanning every piece of equipment in my fleet I narrowed it down to 2 particular components - MAX7456 chip on…"

"oh my gosh - I completely failed to credit you for donating that board....yes that was your board that was used to do the demonstration of both the minimosd firmware, and the kvteam firmware.

I have half a dozen of them in varying states of…"

"I think it might have been the jumper scenario - I forget which condition is bad for plugging in 2 power sources.

I did a little more research and it looks like I'm going to need to buy some extra gear - an AVR ISP MKII to interface with the Atmega…"

"Hey gang...

Just completed another round of noise chasing on the board.
If you're running MinimOSD with a UHF system...don't forget to tie off your tx/rx lines with a toroid.  I went a step further and soldered 330ohm ferrite beads inline on the tx…"

"My QAV400 went down in a field of hay - we sent up the Arducopter Tricoptex to go look for it...and...well see for yourself :)




Anyway - I get this PM on FPVlabs not long after - the guy goes - Hey man I'm know you're hurting about the QAV right…"

"Hey gang...still here!!!

I'm running JR's port on my CC3D 



There were  a lot of changes to this rig namely

OrangeLRS TX running OpenLRSNG 3.1
DTF UHF mini UHF receivers also running OpenLRSNG 3.1
Crius CN-06 with a DIY ground plane antenna…"

"Leaving this here for posterity since this is an issue that has plagued me and other MinimOSD owners for quite some time.

FIX

There are many derivatives of the original architecture for the hardware and they may not all be wired the same way, but…"

"Hey guys,

I don't know how big of an issue this is, but I wanted to report back that I figured out how to "unbrick" these minimosds when you get stuck with the failed to talk to bootloader issue.  I haven't nailed down the exact root cause, but I…"