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Possible 3 game Nintendo "MVS" bartop *2 questions*
push2reject:
http://benheck.com/Downloads/NES_Famicom_Pinouts.pdf
Benheck.com is a good resource for nes hacks. Some very cool stuff.
http://benheck.com/nes-on-a-chip-portable <= very cool
BurgerKingDiamond:
Thanks for the Ben Heck stuff. I've been following him for awhile, he is Amazing.
I don't think that my above question is really NES specific though, as it comes from my lack of basic electronics knowledge. In other words, I think that there r people here that could help me even if they don't know specifics about modding an NES.
I've come up with another question also, which could apply to any arcade setup... I want to try and have each direction of the joystick and each button light up a corresponding LED when pressed. My question is whether it is ok to have one micro switch connected to 2 things at once, the controller pcb, and +5V for the LED. I drew up a diagram of what I am thinking about, using the "UP" button as an example. By pressing the switch you would close both the "UP" loop on the controller PCB, sending an "UP" signal to the NES, and it would also close the +5V loop to the LED, causing it to light up.
I don't know if this is ok though. Will this send +5V to the controller PCB and mess something up?????? I have a feeling that it would, but I have no formal knowledge of electronics (I'm a mechanical engineer.... electricity is MAGIC).
BobA:
When you close the switch on a regular button the gnd is passed thru the switch to the controller board. You cannot pass a gnd and 5V at the same time so your switch would connect ground to your 5v and you will get an instant short circuit. As you have drawn it the LED would be on at all times because it is connected between 5v and gnd. If it is not a 5 V led it would also require a resister in series.
BurgerKingDiamond:
Damn, you're right, I looked at that diagram and the LED would be on the whole time.
kingchimp:
This may be of interest to you. They're lighting up buttons when you press them, but there's nothing stopping you from putting the LED somewhere else if you prefer.
http://shoryuken.com/f177/light-up-activation-button-mod-tutorial-149015/