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Raspberry Pi with various USB gamepads (set up question)

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smass:

--- Quote from: mahuti on December 30, 2016, 12:56:28 am ---You don't have to reboot to change USB devices. I do it all the time. I do a lot of changing game pads around and I'm not kind of gentle about it at all

As for lag... does your keyboard lag too? Or just one pad? Have you tried overclocking?

--- End quote ---

Now that you mention it - there is some lag with my bluetooth keyboard as well.  I will test it a bit more tonight.  Am I to assume then that input lag should not be as noticeable if things are working right?  I guess that's good news as maybe overclocking will help.  I guess it could also be the sd card I am using? 

bleck:

--- Quote from: smass on December 29, 2016, 11:29:18 am ---Related question - I notice some input lag with my usb controller on my pi 3.  Is there any general advice on things to do to minimize the input lag?  Its not game breaking - but definitely noticeable.  I am using the standard retropie/emulation station setup...

--- End quote ---

Input lag in libretro-based emulators has been studied quite a bit. Here's a post in their forums about recommended settings for reducing input lag.

https://libretro.com/forums/showthread.php?t=5428&page=36&p=49145&viewfull=1#post49145

Here's a link to the first post, where he's linked to the posts describing his methodology and results

https://libretro.com/forums/showthread.php?t=5428

Titchgamer:
Just put something to ponder in here.

Depending on what screen you are hooked up to that can lag.

I get pretty large lag with a Pi connected to my tv unless I change the video mode to "game" in standard it lags like crazy!

jimmyfloyd:
This is the exact thread I was hoping to find. I also have 2 RPi3's and an assortment of USB controllers (2x NES, 4x SNES, 2x N64) that I would like to setup so they can be used with their respective systems.

I am having 2 issues so far. The first being what do I program the 4 yellow C buttons in the upper right of the N64 controller too. The second is can the downstream games also have the ability to use a newer controller? For example, can I use the SNES for NES, or the N64 for either NES or SNES.

mahuti:
You can use any of the controllers on any game... as long as they have enough buttons to do the job. For testing purposes sometimes I have an NES usb controller and I use it on games with a lot more buttons (poorly of course) but it works. And I use a playstation usb controller for just about anything.

As for the buttons on the n64 take a look at this:
https://github.com/RetroPie/RetroPie-Setup/wiki/Nintendo-64#lr-mupen64plus-lr-glupen64

You can find a lot of good information there about mapping specific controllers.

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