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ChipMusic.org / Forums / Posts by NeX
HOLY FUCK.
hey do you still need that broken GBA SP? i havent received it yet..
i'll take any spares that are going 
the SMD cartridge slots on the SP are really useful
this is very nicely made indeed...great work!
You showed again how much can fit in a gameboy...
thanks have you seen my midi enabled SP yet? 
Well actually, given that he's just using the flash logic from a USB flash cartridge it's not quite as genius as you think, just stupidly hard to wire up. As NeX has admitted. Now if he coded the logic himself I'd eat my hat.
true, but then the firmware wasn't written by jose either
the real pain was working out the pinouts of the chip, its not standard so there are no pinouts for it
This is super cool! I'd love to see a Nanovoice or other type program that would convert images into sounds real time. Like a fancy shitwave or something... I'm super impressed! Good work. Would you be willing to build these? I'd be super interested.
wow thats an interesting idea, i wonder if that is possible... hmmm
sorry i don't ever want to make this again, it was stupidly complex and hard, but i would still do it for the right money, it would just be a LOT of money lol
might be possible to do a simple version with just the USB part in so that the saves would be easy to get at...maybe
wait until you see what i have planned for my future project, should beat this one pretty bad
thanks guys, its now my number 1 USB cart, it works really well!
thanks! i wish i still owned it, i think i am going to have to make another one
the credit for this idea has to go to Nitro2k01, his genius idea helped me test program my usb gameboy camera before i had fitted the USB part. i don't have a programmer so this was the idea.
basically i added a switch to my usb cart so that it would disconnect the CE pins from the MBC5 and the flash chip, then using an adapter it can be used to program carts and read/write saves etc, then flicking the switch turns it back into a cartridge 
i wanted the switch to be strong so i used the programming holes in the usb board, i had to cut the traces first
i really wanted to use black wire but i had none left so i used purple to match the LEDs
the case all together, another crappy hole cut by me
this is the adapter, its just a back to back cartridge socket
here it is reading the save from my gameboy camera
this is my gameboy SP
it has a new type of pro sound that uses SMD resistors, it is as clear as a DMG in my opinion and i am VERY happy with it!
it also has a GBA accelerator from division 6, this allows it to be over or underclocked during play without it crashing
it has been upgraded with the AGS101 internals for a backlit, super bright screen
it has a stelth dimmer also from division 6 which can brighten or darken the backlight at a push of a button
and most importantly it has full midi, with a custom arduinoboy built in!
here is the YOUTUBE video, sorry its so long but i had the midi sockets mixed up!!!
http://www.youtube.com/watch?v=AlheqG-jpiA
i had to cut out the battery compartment to make room for the arduino
a new smaller pre pot pro sound means that it doesn't need the internal switch to mute the audio, which means i can use the old audio/charge socket at the back for my midi connectors
relocation of the audio cap to make room for the pro sound
the new pro sound, i added 3 new resistors, see if you can spot them
the SMD resistors
stelth dimmer and accelerator fitted
accelerator on the underside
the original arduino 5v pro mini was FAR too big, there was no where it would fit at all, so i made a super cut down arduino for the job
fitted a mode switch by recycling the reset switch from an arduino
the biggest part of the project, the optocoupler, using full sized components, but there is loads of room for this
arduinoboy fitted, it is running my version of the arduinoboy software with beeps to indicate mode instead of lights
other side
midi out 220ohm resistor fitted and the pro sound wired
other side you can see the pro sound wires on the right
pro sound wired
all closed. the arduino was going to sit on the top of the CPU but there wasn't space, luckily the buffer chip is thinner
this beast worked first time so i am very pleased with it, be sure to check the youtube video to see how it all works
this is a project i made for someone. i wasn't so happy to build it as the concept wasn't fully working, but it was in exchange for a usb cart which gave birth to my usb gameboy camera so its ok.
what does it do? well it takes clock pulses from the gameboy and uses them to interrupt the audio or change the pitch of the gameboy in time with the music. the dials at the bottom control the pitch, duty cycle and multiplier.
here are the YOUTUBE videos of it working:
self pitch sync:
http://www.youtube.com/watch?v=eSVOv3ZSeAA
self audio sync:
http://www.youtube.com/watch?v=nClRRK4yKT4
self pitch sync 2:
http://www.youtube.com/watch?v=k4xGP3YDbtk
two gameboy sync:
http://www.youtube.com/watch?v=nqAJX3ME0yA
here it is with the first two dials fitted
tight fit!!!
getting the arduino in and all wired up, it failed to work SOOO many times
finally got it to boot with the pitch sync
finally put it all together
recently a few of my mods have been called into question regarding their complexity, rather than seeing this as a negative i saw this as a challenge to do better. so i have been working on a few more complex mods.
first i gotta thank Nitro2k01 for sticking by me on this project, there were a few times when i was going to give up on this, but staying up late, bouncing ideas off each other made this project happen
so this is my USB enabled camera, it is a gameboy camera with its ROM chip replaced with a flashable chip, and a usb programmer wedged in there too.
whats the point? well now the camera works like a real digital camera, i can plug it straight into the computer and dump the saves without a gameboy or a programmer. If littleFM works i can put the camera software on there and other roms too like LSDJ. if i can work out how the camera part works then i could make some interesting home brew software which uses the camera.
here is the YOUTUBE vide of it working just as a flashable cart:
http://www.youtube.com/watch?v=jJzXXwwNX4k
first i gutted a USB cart for parts and removed the rom chip from the camera
then got round to wiring it all up
this is the first time it was all wired up. it didn't work, i re did this 3 times before it worked!!!
attempt 2
attempt 3 finally working, with a new camera board as the last one broke
more wire porn
after i got it working, i thought about the future of the project and decided that i wanted a replaceable battery. lifting the chip broke off pin 44 of the flash chip so i had to cut away the chip to get enough metal to solder on. NOT FUN
removing the battery
i scraped some of the green stuff off the board to make new solder pads for the new battery
i also recycled the old battery terminal
new battery holder in place, i am not looking forward to changing it tho
sticky foam for the chip
i wanted the usb port properly mounted so i managed to find some space on the board for it to fit then scraped off more green stuff to make solder points.
then the ATMEGA chip, this was a horrible bit because i couldn't test it until it was all finished and there were 44 wires to do. i also had to step up my game for this one, i had to find smaller wire and file down my soldering iron so it was small enough.
checking with the SP showed that i had cocked up somewhere because the nintendo logo was scrambled until i realised the new chip was causing errors because i hadn't wired the ground pin yet, after that it was fine
ATMEGA chip done, now for the serial chip
serial chip in place and time for a test
test failed because i wired the VCC wire to the wrong pin
now the project works i stuck down the serial chip
after all that tiny work, i cut a very poor hole in the side... should have made the effort to make it neat after all that work!
now all thats left to do is hack the camera software and make some kind of cool video camera software!!
thing is, this was pretty easy, it just cost far too much, otherwise i would make more portables
Quick Question
Was the board trimming as simple as just cutting unnecessary pieces or was rewiring involved?
its been a while since i made it, i am pretty sure it was just cutting it down but i think i may have had to relocate some components and re route some tracks, but all easy stuff
ooo custom flash cart
kinda and its all working now too so wait for the thread, i have a few interesting projects waiting to be uploaded
a midi-enabled super gameboy is a great idea.
i am working on one at the moment for myself but its got so much extra crap going in as well that its slow progress, but if anyone wants one i can make it, but i don't have any super gameboys here other than the one i am working on so i would have to get one first.
hi all, i am going on holiday in about 4 weeks and so i need some cash!
if anyone wants any gameboy mods done then drop me an email and we can talk about it
ralph (dot) nex (at) gmail (dot) com
i can make midi enabled DMG gameboys, midi enabled super gameboys, possibly even midi enabled gameboy pockets, backlighting, pro sound etc
if you have any ideas or have a request we can talk about what can be done
i also have some experience with circuit bending too, so if you have something you want messed with you can send it to me and i will do something with it.
ChipMusic.org / Forums / Posts by NeX
