Controller Setup for MSFS 2020 and X-plane
This first step is optional but recommended.
You need to go to the Windows Control Panel. To get there right mouse click on the start menu on your desktop (typically lower left), click on search, type in Control Panel in the search field, click on Control Panel.
Once that window opens up click on Hardware and Sound, then click on Devices and Printers. At the top under Devices find BU0836 Interface or FlightSimStuff Controller, right mouse click on that and click on Game controller settings. A new box will open up, in the box double click on BU0836 Interface or FlightSimStuff Controller.
Another new window will pop up where you can move the controls on the controller and see them move on screen, but you want the settings tab at top left of this window. Once on the settings tab click on Calibrate and follow the directions. You can ignore the instructions to center the Axis. It will then have you move an Axis, move each control until you find the one it is asking for, the bar will move back and forth when you are moving the correct control, move that control in and out fully multiple times. Once you do that click next and do the next Axis and so on. There may be one or more Axis that do not respond when moving any of the controls on the controller, those Axis are not used and can be ignored. The important steps are where you move each control fully in and out from end to end for throttle, prop, mixture and the trim wheel. That will set the ends points for each control from 0 to 100 percent. Move each control all the way in and out multiple times, rotate the trim wheel from one end to the other multiple times to be sure it registers the entire range.
If you skip Calibration you may find in MSFS 2020 that the throttle for instance will go from 2 percent to 98 percent or something like that, this procedure will fix that. X-Plane has its own calibration option in game. You can still do the Control Panel calibration, but you would want to calibrate in game as well.
Microsoft Flight Simulator 2020 Instructions
In Microsoft Flight Simulator 2020 click on Options, then click on Controls. In the Controls screen you will see a device along the top called BU0836 Interface or FlightSimStuff Controller. Click that, on the left there is a search by name box. Search for throttle. Results will show up in the middle section. Find Throttle Axis, you may need to scroll down a little to find it. Click the box that is to the right of Throttle Axis. A screen will pop up, first click on Clear Current Input. Then click in the Start Scanning box and move the throttle on the controller in and out. It should auto fill in the control, then click on validate. That will bind your throttle.
-- If you find the throttle when in the plane is not working until it is about half way in then please try binding the throttle to Throttle 1 Axis instead. Also make sure you do not have any other controller with throttle bound as having two controllers with throttle will not work correctly. --
Repeat the same steps for Mixture and Propeller, search for Mixture and then search for Propeller, you are looking for Mixture Axis and Propeller 1 Axis.
Search for Flaps. Find Decrease Flaps in the list, click in the box to the right of that, clear current input then click start scanning and push the flaps lever up, it will fill in the control, click validate.
You will see Increase Flaps in the list. Click the box to the right, clear input, start scanning and push flaps lever down, click validate.
Then in the search by name box search for Trim. Find Elevator Trim Axis (-100 to 100%). Clear current input, click start scanning and move the trim wheel on the controller, you may need to rotate the trim wheel several turns for it to auto detect, then click validate. In the game options please turn off 'Auto Trim' in the Assistance menu as well.
When finished click Save and Apply on the bottom and should be good to go! You may find a control is reversed (example, the throttle is backwards when pulling/pushing), if that is the case all you have to do is go to Options, Controls, click on BU0836 Interface or FlightSimStuff Controller and all the controls you previously bound will be in the list in the center of the screen. There will be a reverse axis check box next to each control, check it to reverse it.
X-Plane Setup Instructions
Once in X-plane go into the Settings menu. Once in settings click on the Joystick tab. On the Device drop down box select BUO836 Interface or FlightSimStuff Controller. Then click on Calibrate and follow the instructions. You need to move each throttle, mixture and prop controls fully in and out. Then rotate the trim wheel from one end to the other. When calibrating there may be 1 or more Axis that are not used, click ignore on the calibration screen next to those axis that are unused.
Once you are completed with calibration move the throttle in and out and you will see it move on the screen under one of the Axis. Once you see which Axis the throttle is select where it says none (black box with down arrow) and select Throttle from the list, it should be towards the top of the menu.
Now move the Prop control in and out and locate which Axis and then select Prop from the menu, should be towards the top of the menu.
Move the Mixture in and out on the controller to locate it in game and select Mixture from the menu, again should be up towards the top.
Click the Flaps switch down and locate which button number that is highlighted on the right hand side of the screen, once you locate the correct button number hit edit and in the search field type in flaps and then select Flaps down a notch. Then move the Flaps switch up to locate the correct number in game and click edit, search for flaps and select Flaps up a notch.
Now rotate the trim wheel to find the Axis for that and click to bring up the menu and select Elevator trim option from the menu. Should be down a little bit from the top.
Then click done and now the controller should ready to go to!
Let me know if you have any questions.