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| Newbie asking about circuit boards. (NES related) |
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| Chris2:
Whoops. Sorry to make that unclear. I mean to figure out how one would wire a stick and some buttons to an NES PCB, much like an I-PAC would with a MAME setup. I know that the NES used an NO setup from what I've been reading about the controller, but I can't really tell the difference between the wiring for buttons and wires for common. Anyone got an idea on this? |
| SavannahLion:
--- Quote from: Chris2 on May 11, 2007, 07:08:29 pm ---Whoops. Sorry to make that unclear. I mean to figure out how one would wire a stick and some buttons to an NES PCB, much like an I-PAC would with a MAME setup. I know that the NES used an NO setup from what I've been reading about the controller, but I can't really tell the difference between the wiring for buttons and wires for common. Anyone got an idea on this? --- End quote --- I'm still confused. You're saying you're going to wire some buttons and joystick to a PCB. Then you start talking about wires for buttons and wires for common. Do you mean the traces on the PCB? The only wires that I can recall on the controller are those leading to/from the console itself. The schematic for the NES controller is really simple. There's a small chip with the numbers 4021 on it. Here's a schematic showing both the NES and SNES controller Be sure to make note of pin 15 which is A on the NES. The traces that lead away from the chip to the button pad is the anode or positive line. Then it would stand to reason the trace on the other side of the pad would be the cathode, or in this case, the common. I seem to recall someone else on here tried to do the same thing as you by daisy chaining the buttons with a commone cathode and ran into some problems. I think he resolved it by giving each button a dedicated pair of wires back to their respective solder pad on the PCB. |
| Chris2:
So, in other words, solder the NC connector on the cherry switch to the positive anode and the common connector on the cherry switch to the cathode that sits opposite of the positive anode? |
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