I've been creating some 3D printed accessories for joysticks lately, and I find measuring them to be an agonizing process. So, thinking that maybe someone else might want to create similar things, here are the measurements I've made.
Most of them have proven accurate, some of them might be off by a couple of tenths of a millimetre, but work fine.
Seimitsu-01-PCB-2.jpg Gate-DentedSquare.jpg
First up, solder point holes for Seimitsu's 40mm PCB. Omron in this case, but I believe the Panasonic version is the same. I used these measurements to create an octogate for an LS-22, but it works just as well on any of their 40mm sticks (LS-55, LS-56, SELS-70X, etc).
Seimitsu-01-PCB-Spacing-1.png Seimitsu-01-PCB-Spacing-2.png
In order to clear the five solder points for the connector, this worked well for me. Note that this box only opened the space to the bottom of the plate (the blue thing, above). You may extend it to 6, or 6.5mm if your plate is larger than this one.
Seimitsu-01-PCB-Spacing-5.png
Here are the four offset screw holes which are used both to mount the PCB to the joystick base, but also attach the gate. These are not exactly aligned, but since they worked fine I didn't bother to refine them. If you feel like getting closer to perfect, I'd start by bringing them towards the centre on both axes by ~0.4mm and see how it goes.
Seimitsu-01-PCB-Spacing-4.png Seimitsu-01-PCB-Spacing-3.png