Nintendo N64
Here is a guide to modding the N64, covering how to open it up, remove unwanted ports, relocate the game cart port, video, powering the system, trimming the board and advice on other relevant matters about modding the system.
PLEASE NOTE – if you are interested in this section, please also see the N64 Video Guide Logs!
The section had to be broken into chunks as otherwise the .PDF’s don’t work.
WIRING GUIDE!
If you want to select between running system off mains power and batteries; here is a way to do it. If recharging, make sure the system is off first.
N64 board trimming
You can reduce the N64 motherboard along the bottom and sides with low risk, and only needing to relocate one component (the LED). All you are doing is missing the components and traces on the board and removing the grounding mostly, leaving just enough to maintain contact around the board areas. If you cut the board just under the LED contacts then obviously you don’t need to relocate that component.
There are more things you can trim off, although will need some wiring to tiny capacitors (eg the power pin area, a/v area.
You can also trim a tiny amount off the top (by the game cart) through the middle of the 12v line, only needing to connect a wire between ground on each side of the board; however, did the below to keep it simple to reduce the board a bit without making it hard. Click on images for full-size.
PDF guides
N64 modding guide – part 1
N64 modding guide – part 2
N64 modding guide – part 3
Old magazine articles of interest
moddedbybacteria.wordpress.com 
Where can I get the following parts;
Sega Genesis controller shell
Sega Genesis start button
3 N64 Start buttons
Gamecube joystick
3 Super Nintendo buttons; 1 for L, 1 for R, & 1 for Z???
I can get these on Etsy;
Waveshare GamePi20
Raspberry Pi Zero microcomputer
Li-Po Battery
Hey I am trying to make one of these about how much did it cost you to make
Hi i have no experince workng with stuff like this. will i be able to do this without any help?
Hey Bacteria, i have a problem. I have every thing i need, like i made the case, hooked up the controller(tested it And it works) ect. Only thing wrong now is the cart wiring. It isnt showing up on the tv. I rewired it twice. I think i need help on where to where every thing. The project is going great its just the cart spot thats stopping me. Can you help me plz.
Check out the guides on my forum, if that doesn’t help, join up there and post pics in a thread.
ele nĆ£o responde as perguntas
Hey Bacteria, i have a problem. I have every thing i need, like i made the case, hooked up the controller(tested it And it works) ect. Only thing wrong now is the cart wiring. It isnt showing up on the tv. I rewired it twice. I think i need help on where to where every thing. The project is going great its just the cart spot thats stopping me
Yo man you make good videos on how to make portable n64
I have 3 questions
1. I need to know can i make it so the n64 will charge while power is on????
2. Is it ok to put gameshark in it and whats the best way to do it
3. Can u send a mold over to me i live in australia how much will it cost???
Ps u are the worlds best modder ever i respect you a lot man
Have you ever thought about adding a little bit more than just your
articles? I mean, what you say is valuable and everything.
However just imagine if you added some great pictures
or video clips to give your posts more, “pop”! Your content is excellent but with images and video clips, this blog could certainly be one of the greatest in its field.
Excellent blog!
It has some; however the WordPress site was done before I made my forum, which is far more content rich, and superceeded the WordPress site.
Very good blog! Do you have any tips and hints for aspiring
writers? I’m planning to start my own site soon but I’m a little lost on everything.
Would you suggest starting with a free platform like WordPress or
go for a paid option? There are so many choices
out there that I’m completely overwhelmed .. Any ideas? Thanks!
Hello, first I want to tell you that I love your work, it’s really great. I just wanted to ask how you connected the joystick of the playstation card to the controller of the Nintendo 64. I try to redo your work for a project in my electronics course. Thank you very much and good luck for the future, continued to make us dream.
PĆ©try Alexandre, from Belgium
[…] tambĆ©m jĆ” desenvolveu diversos outros consoles modificados: vocĆŖ jĆ” viu por aĆ pelo menos um Nintendo 64 de bolso feito por ele) pode visitar o fĆ³rum oficial, onde ele estĆ” documentando todo o processo. Ć […]
Fã de jogos antigos está construindo a mãe de todos os consoles | Nota Zer0 Games said this on August 16, 2012 at 5:02 pm |
Hi Bacteria! I have a question regarding this can I use any type of charging jack to charge the batteries?
Hi, Bacteria I’m new to this and I decided to make a n64 portable following your guide but when I was removing the things where the metal plate was secured to the motherboard with screws I accidentally broke the thing that is below the X1 mark on the motherboard, what can I do?, exists something that can be used as a replacement?, or I have to buy a new n64?
Post on my forum with pics. http://www.made-by-bacteria.com
Hi Bacteria, now IĀ“m looking for a screen. Can I use the old Zenith Xbox screen. And what about the Gamecube screen.
If I built in 4 controller support can I sold the 3,3 V and the negative wires directli to one port for example on port 1? I wanĀ“t to use headjacks for connecting the ports to the console, and I think they donĀ“t have enough wires.
Hi, Bacteria. IĀ“m new into this, and IĀ“m writing from germany. I still donĀ“t understand your step down regulator. You use the capacitor and the resistor, did you calculate them or did you try combination till you get 3.3 Volt. And what is the rest on the step down board. Where can I get it or how can I built one. Maybe sounds stupid for you but I habe not really idea of electronics.
The regulator needed capacitor and resistor, some don’t, and detailed on my forum.
Hey bac i started this project but im wondering what type of gauge wire to use and what type of solder. I got 18 gauge solid and rosin core would that be ok?
For voltages, yes, 28 gauge for cart relocation is best.
hey bacman, this has been a really great guide. In the specifications on another page it says to use a combined rumble and memory pak. i have found one called a tremorpak http://www.amazon.com/TremorPak-Plus-Nintendo-64/dp/B000EOEYEA Do you think that this would be acceptable? thanks for everything
How many mAh do the batteries you use have?
hello, i am 12 and hoping to make this! my dad is going to help me sauder and i will follow your videos to make it! Thanks for the videos, they make it much easier than some others i have seen.
Hey Bacteria
I was wondering if it’s possible to add four controllers and change between the internal and external player one with the help of a switch. I would enjoy playing with friends on tv without having to hold the console in my hands…
thanks a lot for the awesome guide š
Yes, if you switch between data (white line) from internal to external controller.
Would it be possible to hook up a laptop monitor to the N64 via modding wiring? i rather go for the gold on this on. 64TOP; sounds catchy….
No, computer monitors work with H-Sync and V-Sync. You can with DreamCast and Xbox, not N64.
i am gonna use a laptop lcd screen you just have to get a controller board to run the screen. the board plugs into the lcd ribbon cable and gives you the red/white/yellow plugs.
Hello Bacteria. I just found amazing what you are doing, all the knowledge you have. I want to add some LEDs in the n64, so the light could came out from the logo and the vent holes. According to the wiring guide, do I connect each LED->wire-> from battery (positive) ? I know almost nothing in
electronics and cartboards, and you could be very helpful.
thanks and good luck wih Alpha omega project !
Frank
Connect each LED to a resistor suitable for the voltage being used and you can do what you’re after. Show pics on my forum of what you’re trying to do!
mmmmhh… I searched using ”led”and ”light” terms but didn’t find. also have overlooked. BTW, I’ve created a new thread if there’s no one :
http://moddedbybacteria.freeforums.org/post29535.html#p29535
Replied in the forum!
If I wanted to make the portable n64 with multiple controller outlets. How would I do this?
Remove the player 2, 3 & 4 ports and relocate them with wires.
Hi Bacteria I just wanted to know if I could get a Case for the portable and multi port adapter If I could get a price I would appriciate it .
I’ll make a small number of case halves in th next weeks for sale, subject to my moulds holding out.
Are there any of these cases still going about for sale? I’m away to embark on an N64p.
How do you suggest cutting holes into the case where buttons would go?
Drill bit to make the crude hole cut, then sanding drum to finish the circle smoothly.
ummmm……. hhey guys ummm……. you guys are asking him to do alot of things for you he has the guides what more do you want…….:|
I found some of the guides a little difficult to understand….
Hi I wanted to now if you could send me something that I can use to make one like an instruction book on what it takes to make one
You have the video guides, you have PDF guides on this site too; that’s sufficient.
dear Bacteria , I’m Carlos and I love what you do.
would very much appreciate you put the videos for download since I do not have much access to internet, use the litter school here and I do not have access to youtube.
thanks for your attention …
Note: I am Brazilian … sorry for bad english
if possible send me by email carlinhosamf(@)hotmail.com
Hey Carlos, if you want to save the videos that Bacteria has posted on youtube, copy the URL from the youtube page where the video is, and go to http://www.keepvid.com. Paste the URL in the box and press the download button, and it will give you several options of how to download the video. I usually choose MP4 version. Then you can have all the videos on your local machine. Good luck!
Good tip!
http://www.tconvert.com video download & converter for any video format online HD video 4K included.
dear Bacteria , I’m Carlos and I love what you do.
would very much appreciate you put the videos for download since I do not have much access to internet, use the litter school here and I do not have access to youtube.
thanks for your attention …
Note: I am Brazilian … sorry for bad english
if possible send me by email carlinhosamf@hotmail.com
If you have a friend with internet, they can save the YouTube videos for you and copy them to a disc.
I am writing to inform you that the pdf file for the third part of the guide is incomplete and stops at trimming the motherboard. I would greatly appreciate if you could fix this and/or send me the full file. Thank you.
When I get around to it i’ll have to install the old wordprocessor onto my Windows laptop so can view and convert the files and see if there is anything missing from the PDF content or not.
Thank you, I appreciate it. Please inform me when this change is made.
The N64 video guides BTW are far better than the PDF guides anyway, and were designed to replace the PDF’s.
The guide is complete, it is made into sections rather than step-by-step as in the N64 video guide section here. I’ve also checked the documents load fine, and they do.
can you give me the naration in the third video in writing please
Can i use a 50 pin IDE cable for the cart slot relocation and where can i get the voltage regulator thing
Yes, IDE cable is ok for up to 6″ max. Step-down regulators for N64 – ebay do some, you need output at between 3.1v and 3.4v (3.3v ideal) and 1.5 amps or more.
Sorry for the sudden bombardment of questions, however I assure you THIS is the last one.
Would hot gluing the wire ends after soldering ensure protection? I heard that somewhere.
Yes, it is a good idea to hot glue wiring after soldering it to a board, it reduces the chance of catching the wire and tugging if off the board causing damage. Hot glue is easy to remove too if you need to.
OK, Bacteria: you ARE a genius. I love you’re videos. But 2 quick questions:
1. Can I use a regular gamecube joystick on my N64 portable?
2. One of my many fears of making a portable, cutting the main board– should I or shouldn’t I?
Also, is a fan really necisary in a project like this?
Yes, otherwise the board gets hot and can cut out. Some say you only need heatsinks and holes in the casing to remove hot air and not a fan; however i’ve tried this twice and on both occasions the N64 board got hot and reset itself when the chips protection kicked in – so yes, you need a small fan!
Thanks for the compliment!
You can use a regular GameCube joystick on an N64 controller as long as the N64 controller doesn’t use the official Nintendo style joystick (eg their official controllers). You can cut the main board along the paths in my guide; the safe part is the silver strips on both sides, as long as you can still see part of the silver on both sides of the board, you are fine; you can cut more off the board, but you need to know what you’re doing.
OK, awesome! Now for one more question. Am I allowed to skip over the expansion/rumble chip part?
You don’t need a memory pack or rumble pack or both, however some games like Doom 64 need a memory card, many don’t, as to if you use rumble, its personal choice.
so could i leve all my controller ports on and wire it all the same and it will still work.. or not??
Yes. The purpose of relocating parts is to make the board smaller and flatter, or to reposition something elsewhere on the board more appropriate, eg out of the way.
Wow you have inspired me to make a GamecubeP i would like to know ho yo wired the controller to were some buttons are on one side and some are on the other… do you split the controller board in half? or do you wire… im not sure
You relocate the button contacts by mounting them in your case and wiring the button contacts back to the controller. I think I documented it in the videos; please join my forum if you haven’t already (link in sidebar) and we can help and offer advice to you on your project!
Where, and how much, do you usually buy your ps1 screens?
Ebay.
I’m curious, before I begin to even think about attempting this, can it do mulitplayer?
My system is single player only, although if you make your own, you can have up to 4 players (the N64 takes up to 4 controllers).
is it possible you could enlarge the wiring diagram part for the step down regulator
In the “Batteries and voltages” section there is a PDF file with large pictures of them…
So for the cartridge slot relocation, when you say it is corresponding, do you mean that the pins on the left side of the cartridge slot pins go into the right side of the pins on the n64 board? but the same amount of pins from the middle? I hope you understand what im trying to tell you.
No, you wire each pin on the cart slot as there were originally connected on the N64 board, ie the top right pin connects to the top right cart slot pin. If you rotate the cart slot, you alter your wiring accordingly so the same pin connects to the same cart slot pin.
For the memory pack wiring, how do you know where on the controller pack to wire the wires to? On the controller it is pretty easy to see where to solder the wire to, but where on the memory pack?
Insert memory pack, and use a multimeter to check what pin goes to where, if you can’t see them. I will be covering this on my Video Guide in due course.
ok awesome, a video would be nice. But are you going to show which pin goes where?
Yes.
This project is taking a log time as i’m having to try and plan everything to make it as easy for someone to follow as possible.
There are separate memory cards and rumble packs for the N64, however there are dual function packs that contain both features, I will use one of these in my project, although will cover the wiring etc of the separate units.
Great guide- best one I’ve found. I am building a portable N64 myself, and I am wondering how you positioned the PCB for the controller (buttons A, B, and the C pad) inside the case. It seems to me that the they will be too far away from the front of the case if I put the PSone screen in first, then the controller board next. I’m thinking of making my own PCB for correct positioning with the case and just wiring some squishy tacts back to the original controller board.
Thanks for the compliment, appreciated.