AD2 Override Fail

[Wax Savage]

I have a new AD2 purchased from Nautilus Drydocks. The AD2 is mounted to the aft equipment tray of my R&R WTC and lays alongside the ballast pump.

Upon powering up my WTC, the AD2 initially seems to function properly. The aft planes move smoothly to counter rise and fall of the back of the sub. The aft dive planes override feature works okay. Upon activating the ballast pump, the aft dive planes exhibit moderate jitters. Operating the twin brushless motors causes more pronounced dive plane jitters. I understand that this is normal for the AD2. It is said that the AD2 is sensitive to motor vibration.

The problem is that after running the brushless motors (sub is in the water), the aft dive planes override feature no longer works. Disconnecting the subs battery and re-connecting brings back the rear planes override, only to have it stop working again after I run the drive motors. Not good as I cannot program a working FAILSAFE command to cause the rear planes to rise in an emergency. Anyone with experience, hopefully a cure?

BTW, I’ll be at Subfest with this boat.

See you in September :-)

[RCSubGuy]

That is super-weird. Does it do the same thing if you use a different channel on the receiver? Jitters can also be reduced by lowering the sensitivity on the unit (long press the button and shoot for 1 or 2 flashes max)

[Wax Savage]

That is super-weird. Does it do the same thing if you use a different channel on the receiver? Jitters can also be reduced by lowering the sensitivity on the unit (long press the button and shoot for 1 or 2 flashes max)

Thanks for the response. I have not tried swapping RX channels but, will test it out tomorrow. AD2 sensitivity is on number 2.

It crossed my mind to move the AD2 to the front in an attempt to further isolate the AD2 from the motors. Easily done but then, I sm concerned the AD2 would be reacting to input from the front dive planes. Have you had success placing the AD2 in the forward equipment tray?

Of course, this may not address/cure the inoperative rear planes override. That is a serious gremlin.

On 4/02/2024 Dave Meriman posted to biggsgolf no working override issue ( https://forum.rc-sub.com/forum/caswell-models/179202-ad2-pitch-controller) stating that some AD2's had been miss-programmed. Dave was not sure of the batch/lot numbers were affected. My AD2 has a handwritten lot number AD2h . As I said, my AD2 override works great,.. right up to when I power the brushless motors. Then no joy.