"Swapped FCS to "normal" orientation with a known good board. No change."

"Dataflash log from recent flight. You can see when I ramp throttle, pitch and roll both diverge quickly. The RCOU on ch2 (the arm that is acting strangly) looks a little noisy but it is hard to tell since it is logged at a lower rate. Can anyone…"

"I gave up on the relay output, it just seems to be broken. Despite hacking around with the code something is locking it high and I could not figure out what. I disabled the copter LED's which seem to use those pins, but no dice.
I ended up changing…"

"Pulled 3.0.0rc2 source and the relay off commit is in there, so now I don't know why it wouldn't be working.
Looking at AP_Relay and AP_Camera it isn't clear to me why this wouldn't be working now. 2.9.1b vs 3.0.0rc2 have identical AP_Camera.*…"

"Updated to 3.0.0rc2. Relay output now turns on with CH7 input but won't turn off. I'm assuming the git patch which fixed this is not in 3.0.0rc2. Relay test mode still does not work though, the output now remains low all the time during the relay…"

"Sounds like for APM2.5 the relay output may not work properly? There was a commit about a month or two ago which eliminated this restriction, so the latest rc software should be working?"