Lichtknarre: Unmodified Wii remote as a sight accurate Lightgun using 2/4 LEDs

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Howard_Casto:
Well I figure that even if this doesn't pan out the way I want it I can always convert them to jaybee/gun4ir guns cheaply. I'm bound and determined to finally get a nice lightgun solution even if I have to code it myself. I'm making my harness tonight and yeah I can throw a resistor on there just for good measure.

ZTylerDurden717:
What's your step by step to calibrate offset? I feel like I'm going in a loop changing values and not understanding the precision movements. I just know the aim isn't perfect and I'm assuming offset fine tuning is the solution.

My bezels are all exactly the same size. Does that mean all offset values should theoretically be the same? I need some kind of method to follow.

RandyT:

--- Quote from: ZTylerDurden717 on January 28, 2023, 01:06:54 pm ---What's your step by step to calibrate offset? I feel like I'm going in a loop changing values and not understanding the precision movements. I just know the aim isn't perfect and I'm assuming offset fine tuning is the solution.

My bezels are all exactly the same size. Does that mean all offset values should theoretically be the same? I need some kind of method to follow.

--- End quote ---

Left and right are usually pretty close to the same, but top and bottom may vary a bit. The way I did it was to use the mouse plugin and cursor as a reference, get into the rough area where you will be using the gun and aim at the edges of the screen, one axis at a time. Then note the difference between your aim and the mouse cursor point. From there, it's just a matter of adjusting the IR offsets until all sides line up at the edges when you aim at them. You will likely need to "shift" your offsets one way or another to balance the differences. I.e. if the difference between each side is roughly the same and in the same direction, add or subtract the same amount from each side to get things centered and tweak some more after this if necessary.

It's a little fiddly in the beginning, but so long as nothing moves (LED, screen positions) you will only need to do it once. So it pays to get it as close as possible in the beginning, before you start to calibrate within individual games/apps. Consider the LED offsets to be the foundation upon which everything you do thereafter is built. Sadly, there will be some titles for which it seems impossible to get good linearity, and this is most likely due to the difference in resolution and/or aspect ratio. Currently, there is no automated way to deal with that situation, so to play those games well, it will require fiddling with the IR offsets, as this appears to define your linearity. So it's a good idea to write down the values before tweaking them for a specific title you want to play. For others, with little to no decent calibration routines built-in, you can use the plug-in offset sliders, These work well for vJoy and MAME, where the linearity is usually acceptable, but the cursor doesn't line up perfectly with your aim.

At some point, Fusselkroete will likely have some app sensing and automatic profile selection built-into the software to automate a lot of this.

Howard_Casto:
I mean I was working on this prior to my current job and the 4:3/16:9 issue should be solvable with simple math. If you have a 16:9 screen and have calibrated it then a 4:3 game would be the same bounds with a shorter x axis. If you have a 4:3 monitor and want to play 16:9 (I guess it could happen.) it'd be the same deal only with a shorter y axis instead of x. I had planned to have the 4:3/16:9 modes switchable via the d-pad.

ZTylerDurden717:

--- Quote from: RandyT on January 28, 2023, 03:42:59 pm ---
Left and right are usually pretty close to the same, but top and bottom may vary a bit. The way I did it was to use the mouse plugin and cursor as a reference, get into the rough area where you will be using the gun and aim at the edges of the screen, one axis at a time. Then note the difference between your aim and the mouse cursor point. From there, it's just a matter of adjusting the IR offsets until all sides line up at the edges when you aim at them. You will likely need to "shift" your offsets one way or another to balance the differences. I.e. if the difference between each side is roughly the same and in the same direction, add or subtract the same amount from each side to get things centered and tweak some more after this if necessary.

--- End quote ---

Thanks! So let's say I'm aiming at the top of my monitor edge and my mouse is incorrectly appearing under my sights. Am I adjusting the "top" offset in lichtknarre to -2 or 2 (assuming 2/-2 is the magic number).

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