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USB volume knob as trim wheel in MSFS?

Featured Replies

Has anyone tried and had success with converting and using a simple USB volume knob as trim wheel in MSFS?

 

  • 1 month later...

Very clever. Can you change the rate at which the trim moves? Also, does it “reset” to the current position after the autopilot is disconnected? 

AMD 9950X3D | 64 GB RAM | RTX 5090

FMR: 747 FO, 757/767 CAPT, 737 Check Airman
Current 777 CAPT

 

You can do it with Lorby's Axis and Oh's. Assign Mouse_Wheel_Up to the ELEV_TRIM_DN event, and a similar action for Trim up.
A reset is not necessary because you are not using an axis.

Flightsim rig:
CPU: AMD 5900x  | Mobo: MSI X570 MEG Unify | RAM: 32GB G.Skill Trident Z Neo | GPU: Gigabyte RTX 3090 | Storage: M.2 (2 & 4 TB) | PSU: Corsair RM850x | Case: Fractal Define 7 XL
Display: Acer Predator x34 3440x1440 | Speakers: Logitech Z906 
Controllers: Fulcrum One Yoke | MFG Crosswind v2 pedals | Honeycomb Bravo Quadrant |Thrustmaster TCA Quadrant | Stream Deck XL & Plus | TrackIR 5 Tobii eye tracking

  • Author
20 hours ago, V1ROTA7E said:

Very clever. Can you change the rate at which the trim moves? Also, does it “reset” to the current position after the autopilot is disconnected? 

The knob I have has detents when I turn it. A signal is sent with each detent. I have remapped it to send Numpad + and - depending on the direction of rotation.

I think it should be possible to change the rate e.g. by asking the AHK script to send multiple keypresses per detent. I fly the A2A Comanche and it has a control in the tablet for trim rate.

Wrt. reset it is not relevant with this approach… the knob does not know ‘where’ it is. It rotates infinitely in each direction. As mentioned it is not an axis.

Edited by SuperKaro2014

I have a bonified Cessna Trim Wheel, but I don't use it for trim as I prefer two adjacent buttons on a TM Boeing TQ.  I like the fact you can do incremental adjustments or hold down either button for continuous adjustment.  I use the trim wheel for nose-wheel steering and recently also mapped it to rudder axis as I don't use pedals and works quite well in this scenario.

Noel

System:  9900X3D Noctua NH-D15 G2, MSI Pro 650-P WiFi, G.SKILL  64GB (2 x 32GB) 288-Pin PC RAM DDR5 6000, WD NVMe 2Tb x 1, Sabrent NVMe 2Tb x 1, RTX 4090 FE, Corsair RM1000W PSU, Win11 Home, LG Ultra Curved Gsync Ultimate 3440x1440, Phanteks Enthoo Pro Case, TCA Boeing Edition Yoke & TQ, Cessna Trim Wheel, RTSS Framerate Limiter w/ Front Edge Sync.

Aircraft used in MSFS 2024:  Fenix A320,  Aerosoft CRJ, FBW, WT 787X, I-Fly 737 MAX 8, Citation Longitude.

 

  • Author

Yes, the button solution also works well. That’s what I primarily used until I remapped the volume knob. Must admit that the smooth rotation and tactile feedback from the detents makes for a good feel.

My yoke also has a rocker switch set up for trim, and I use an old USB numpad as button box and it’s also easy with AHK to remap keys or run macros as needed.

Didn’t think about the rudder option, but I will experiment. I have no pedals either.

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