Viewing 9 posts - 1 through 9 (of 9 total)
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  • alexeymohr
    Participant
    Post count: 3

    Hey all,

    so I’m trying to put together a RetroPie to play NES games, and I’ve got an original NES controller. I wanted to hook it up directly to the GPIO pins without having to fuss with any adapters, so I cut off its plug and connected up some crimp pins:

    NES_Crimp_Pins

    I’ve tried to follow various different connection instructions that I’ve found online, but I haven’t yet had any luck getting the emulation station startup to see the controller.

    NES_Pie

    It comes up saying “no joystick detected” and the button presses aren’t read. Can anyone offer some guidance for getting this to work? It would be most appreciated!

    roquen
    Participant
    Post count: 69

    Will you need a firmware driver for this connection or will it see it as an input device automatically?
    Im including images that may or may not be helpful :)


    NES pinout

    RPi pinout

    alexeymohr
    Participant
    Post count: 3

    Thanks for those schematics, they confirm how I thought the controller was wired. The ones I’ve followed for connecting it to the Pi GPIO pins are:

    And:

    I haven’t had any luck getting the controller to communicate following either. I’m using the latest RetroPie image, and I assumed that it auto-loaded the gamecon_gpio_rpi driver at startup? Do I have to activate it somehow?

    roquen
    Participant
    Post count: 69

    Im not able to confirm this until late tonight, but I believe you need to run the RetroPie-Setup script to enable the driver. I don’t think its loaded by default.

    I don’t know where it is off the top of my head in the SD image (probably ~/RetroPie-Setup/somewhere)

    but RetroPie-Setup/master/scriptmodules/setup.shinc has an installation script for the driver.

    I am probably not helping, sorry, :P

    alexeymohr
    Participant
    Post count: 3

    So I loaded the driver via the RetroPie script (thanks for that!), and then discovered that since I’m on a rev2 Raspberry Pi I had to load it with this command:

    sudo modprobe gamecon_gpio_rpi map=0,0,0,0,2,0

    At that point I still had no love running jstest. So then I tried using the 5v pin instead of the 3.3v pin, and there it was!

    So now I’m working on figuring out the protection circuit that’s recommended so that the 5V doesn’t blow up the controller or the Pi. I think I get the idea using a 500 ohm resistor and a standard diode. We’ll see what happens next…

    bgianpetro
    Participant
    Post count: 4

    Hmm, so does this mean the original NES controller requires 5V to work instead of 3.3? Because I’m getting ready to solder my original NES controller ports to my petrock-purchased GPIO adpater, which I believe only provides 3.3V, correct?

    nesman
    Participant
    Post count: 1

    Did anyone get the NES controler to work yet. I just got my RetroPie Adapter the other day and ready to solder it into my box.

    bgianpetro
    Participant
    Post count: 4

    Yup, I got mine working. What type of enclosure are you using? I am using the original NES, so what I did was solder the original port cables to 1″ square board that has a 2×5 header. That way I can connect it directly to the GPIO adapter using a standard 10-pin ribbon cable. Also, the 3.3v was no problem for me using the GPIO adapter.

    hivvu
    Participant
    Post count: 3

    [quote=3955]sudo modprobe gamecon_gpio_rpi map=0,0,0,0,2,0[/quote]

    What pinout did you use?
    I’m having trouble to get this to work :/

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