Making SMS controller.

freeshiny · Post by **freeshiny** » Sat Jan 10, 2009 10:26 pm

Hi,

I'd like to make my own SMS controller however I don't have any spare controller boards left. One could make a NES controller using only a single 4021, and a bunch of resistors. Where could I find the scheme depicting SMS' controller? I'm pretty new to the Sega hacking.

Cheers!

misjah · Post by **misjah** » Sun Jan 11, 2009 7:59 pm

I had schematic for sega genesis but can`t find it anywhere,not even the bookmarked page....I know it uses 74hc157....
The good thing is that you don`t need any circuit for sms joypad since you need only two buttons, each wire represents a button and a ground is common...... check the pinouts here:
http://pinouts.ru/Game/sega_ms_joy_pinout.shtml

Kyo · Post by **Kyo** » Mon Jan 12, 2009 12:12 pm

that's right. the genesis did this too.

misjah · Post by **misjah** » Mon Jan 12, 2009 12:38 pm

I found auto-fire schematic if you want to improve your joypad....

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Rekarp · Post by **Rekarp** » Mon Jan 12, 2009 2:40 pm

The Sega Genesis does not have any internal logic if you want to make a 3 button. A 6 button on the other hand....

Here is a link

http://nfggames.com/forum2/index.php?topic=2266.0

misjah · Post by **misjah** » Mon Jan 12, 2009 4:50 pm

Found the 6 button schematic....

@Rekarp - but the real joypads does have circuitry inside....

Rekarp · Post by **Rekarp** » Mon Jan 12, 2009 5:14 pm

misjah wrote: @Rekarp - but the real joypads does have circuitry inside....

3 Button pads do not. Its just a pcb with carbon contacts.

misjah · Post by **misjah** » Tue Jan 13, 2009 11:28 am

My version of joypad has electronics, that`s why I was pointing this out....

Rekarp · Post by **Rekarp** » Tue Jan 13, 2009 12:33 pm

Wow thats allot different then some of the ones I have seen. Thanks for sharing. I could have sworn that the 3 Button had no logic in it.

/goes opening Genesis controls

Kyo · Post by **Kyo** » Tue Jan 13, 2009 1:01 pm

Huh... That's odd...

Well anyway, this thread isn't really about the genesis at all. Sorry for starting it.

freeshiny · Post by **freeshiny** » Tue Jan 13, 2009 1:38 pm

So it is like this, with one line per control?

Which resistance should I use?

misjah · Post by **misjah** » Wed Jan 14, 2009 10:21 am

you don`t need resistor, button is directly connected to ground, so for left button just put switch between pin3 and ground,for button right pin4 to ground and so on.... power (vcc) is used for models with IC

freeshiny · Post by **freeshiny** » Wed Jan 14, 2009 4:31 pm

Whoa, that was super-easy. Nice way to start making your own joypads. Couldn't find an easier first time project

Here are the pics, if anyone cares: http://picasaweb.google.com/ljubomir.simin/SMSJoypad#

Thanks for the help!

Rekarp · Post by **Rekarp** » Wed Jan 14, 2009 5:00 pm

Btw. Some 3 Buttons have internal logic. These controllers can be used as 6 button controllers by pressing start in some 6 button games. Start toggles which row the 3 buttons emulate.

Kyo · Post by **Kyo** » Thu Jan 15, 2009 8:18 am

so others don't have internal logic, and we were right

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Making SMS controller.

Making SMS controller.

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