Hi Vlad and Roman

Apologies as I know this has been asked before but please can we have analogue option back for elevator trim.  It works on a Bodnar Joystick board but as that is using the Xplane defaults, it does not work with the NHadrian mod of the C152.  He recommends your system so I rewired my sim to put my analogue trim pot onto your board but cannot get it to work despite trying all the work arounds in the tech tips etc..

I am using a 5 turn pot which is linked by a gear to the real trim wheel in my C152 fuselage.  The trim is 5 turns full down to full up so this works perfectly with the original wheel and mechanical indicator.  Using the joystick board it also works with the default c172 aircraft and the Justflight C152.

I tried using both Elevator_trim and Elevator_trim_Pos and although the board can see it and registers the input on the "analogue" input in the data table, once set, it then jumps around or worse slowly decays away to full nose down.  If I move the pot it jumps back to where I set it.

Voltages are stable to within 100th of a volt on the analoge input to the Arduino master board so its not that.

I have also tried grounding all the unused analogue inputs, use very short cables and tried an RC low pass filter to minimise any "noise"

I really want to use the nHadrian C152 but unless I can resolve the Elevator trim issue and use it with my 5 turn pot, I will have to abandon that and stay with the Other C 152 which works  but the flight model is far less accurate. I really do not want to change to an encoder as the mechanical indicator is then not going to function as intended.

Hope you can help and would be really grateful if you can resolve this one and give us the option for analogue trim again.

Thank you as always.

Jeff
1 week ago in Analog Inputs by

1 Answer

Jeff,
Is this plane has the special "custom" dataref for the trim?

And - have you made the analog input calibration in the plugin (you should use the "Elevator_trim_Pos")?
Vlad
1 day ago by
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